{"id":5851,"date":"2019-12-23T17:45:00","date_gmt":"2019-12-23T14:15:00","guid":{"rendered":"https:\/\/cfd-mrk.ir\/?page_id=5851"},"modified":"2019-12-23T17:58:04","modified_gmt":"2019-12-23T14:28:04","slug":"acoustic-theory","status":"publish","type":"page","link":"https:\/\/cfd-mrk.ir\/index.php\/training\/flow-analysis\/fundamentals-of-cfd\/acoustic-theory\/","title":{"rendered":"\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9"},"content":{"rendered":"\n<h2 class=\"has-text-color has-text-align-right wp-block-heading\" style=\"color:#440665\"><strong>\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9<\/strong><\/h2>\n\n\n\n<h2 class=\"has-very-dark-gray-color has-text-color has-text-align-left wp-block-heading\">The Theories Of Acoustics<\/h2>\n\n\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0628\u0631\u0627\u0633\u0627\u0633 \u062a\u0648\u0644\u06cc\u062f\u060c \u0627\u0646\u062a\u0634\u0627\u0631\u060c \u0634\u0646\u06cc\u062f\u0646 \u0648 \u0627\u0636\u0645\u062d\u0644\u0627\u0644 \u0635\u0648\u062a \u0628\u0646\u0627 \u0646\u0647\u0627\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a. \u0635\u062f\u0627 (Sound) \u062f\u0631 \u0632\u0628\u0627\u0646 \u0627\u0646\u06af\u0644\u06cc\u0633\u06cc\u060c \u0628\u0647 \u0645\u0639\u0646\u06cc \u0622\u0646 \u0686\u06cc\u0632\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0634\u0646\u06cc\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f. \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 (Acoustic) \u0646\u06cc\u0632 \u0634\u0627\u062e\u0647\u200c\u0627\u06cc \u0627\u0632 \u0641\u06cc\u0632\u06cc\u06a9 \u0627\u0633\u062a \u06a9\u0647 \u062f\u0631 \u0645\u0648\u0631\u062f \u0627\u0645\u0648\u0627\u062c \u0645\u06a9\u0627\u0646\u06cc\u06a9\u06cc \u062f\u0631 \u06af\u0627\u0632\u0647\u0627\u060c \u0645\u0627\u06cc\u0639\u0627\u062a \u0648 \u062c\u0627\u0645\u062f\u0627\u062a \u0628\u062d\u062b \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0635\u062f\u0627 \u0631\u0627 \u0645\u06cc \u062a\u0648\u0627\u0646 \u062f\u0631 \u0645\u0631\u0627\u062d\u0644 \u0645\u062e\u062a\u0644\u0641\u06cc \u0645\u0648\u0631\u062f \u0628\u0631\u0631\u0633\u06cc \u0642\u0631\u0627\u0631 \u062f\u0627\u062f. \u0628\u0647 \u0639\u0628\u0627\u0631\u062a \u062f\u06cc\u06af\u0631\u060c \u0635\u062f\u0627 \u0627\u0632 \u067e\u06cc\u0634 \u0627\u0632 \u062a\u0648\u0644\u062f\u0634 \u062a\u0627 \u0632\u0645\u0627\u0646 \u0627\u0632 \u0628\u06cc\u0646 \u0631\u0641\u062a\u0646\u0634 \u0645\u0631\u0627\u062d\u0644\u06cc \u0631\u0627 \u0637\u06cc \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0647\u0631 \u0645\u0631\u062d\u0644\u0647\u060c \u0628\u0647 \u0637\u0648\u0631 \u062a\u062e\u0635\u0635\u06cc \u0648 \u0628\u0647 \u0637\u0648\u0631 \u0645\u062c\u0632\u0627 \u0642\u0627\u0628\u0644 \u0628\u0631\u0631\u0633\u06cc \u0627\u0633\u062a. \u0635\u062f\u0627 \u0637\u06cc \u0641\u0631\u0627\u06cc\u0646\u062f\u06cc \u0633\u0627\u062f\u0647\u200c\u0627\u06cc \u062a\u0648\u0644\u06cc\u062f\u060c \u0645\u0646\u062a\u0642\u0644\u060c \u0634\u0646\u06cc\u062f\u0647 \u0648 \u0645\u0636\u0645\u062d\u0644 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0647\u0631 \u06a9\u062f\u0627\u0645 \u0627\u0632 \u0627\u06cc\u0646 \u0641\u0631\u0622\u06cc\u0646\u062f\u0647\u0627 \u0628\u062d\u062b\u200c\u0647\u0627\u06cc \u0645\u0641\u0635\u0644\u06cc \u0631\u0627 \u0637\u0644\u0628 \u0645\u06cc\u200c\u06a9\u0646\u062f.\u00a0<\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0639\u0644\u0645 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u062f\u0631 \u0648\u0627\u0642\u0639 \u0628\u0647 \u062a\u0648\u0644\u06cc\u062f\u060c \u0627\u0646\u062a\u0634\u0627\u0631 \u0648 \u0627\u0636\u0645\u062d\u0644\u0627\u0644 \u0635\u0648\u062a\u200c\u0647\u0627\u06cc \u0647\u0648\u0627\u0628\u0631\u062f (Airborne) \u0645\u06cc\u200c\u067e\u0631\u062f\u0627\u0632\u062f. \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0639\u062f\u062f\u06cc \u0646\u06cc\u0632 \u0634\u0627\u062e\u0647\u200c\u0627\u06cc \u0627\u0632 \u0627\u06cc\u0646 \u0639\u0644\u0645 \u0631\u0627 \u0628\u0647 \u062e\u0648\u062f \u0627\u062e\u062a\u0635\u0627\u0635 \u062f\u0627\u062f\u0647\u200c\u0627\u0646\u062f. \u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0627\u0634\u0627\u0631\u0647 \u0634\u062f\u060c \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0639\u062f\u062f\u06cc \u062d\u0644 \u0645\u06cc\u062f\u0627\u0646 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0639\u0628\u0627\u0631\u062a\u0646\u062f \u0627\u0632:<\/span><\/p>\n<ul style=\"text-align: right;\">\n<li><span style=\"color: #000000;\">\u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0645\u0633\u062a\u0642\u06cc\u0645<\/span><\/li>\n<li><span style=\"color: #000000;\">\u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0627\u0646\u062a\u06af\u0631\u0627\u0644\u06cc<\/span><\/li>\n<li><span style=\"color: #000000;\">\u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u067e\u0647\u0646 \u0628\u0627\u0646\u062f<\/span><\/li>\n<\/ul>\n<h3 style=\"text-align: right;\"><strong><span style=\"color: #800000;\">\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0628\u0631\u0627\u06cc \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0639\u062f\u062f\u06cc<\/span><\/strong><\/h3>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0645\u0633\u062a\u0642\u06cc\u0645 \u0641\u0631\u0645\u0648\u0644\u0627\u0633\u06cc\u0648\u0646 \u062c\u062f\u0627\u06af\u0627\u0646\u0647\u200c\u0627\u06cc \u0646\u062f\u0627\u0631\u0646\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u0631\u0648\u0634\u200c\u0647\u0627 \u0633\u0637\u062d \u0646\u0648\u06cc\u0632 \u0628\u0631\u0627\u0633\u0627\u0633 \u062a\u063a\u06cc\u06cc\u0631\u0627\u062a \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062c\u0631\u06cc\u0627\u0646 \u0627\u0632 \u062c\u0645\u0644\u0647 \u0641\u0634\u0627\u0631 \u0646\u0633\u0628\u062a \u0628\u0647 \u0632\u0645\u0627\u0646\u060c \u062a\u0639\u06cc\u06cc\u0646 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0645\u0647\u0645\u062a\u0631\u06cc\u0646 \u0648 \u067e\u0631\u06a9\u0627\u0631\u0628\u0631\u062f\u062a\u0631\u06cc\u0646 \u0631\u0648\u0634 \u0627\u0646\u062a\u06af\u0631\u0627\u0644\u06cc\u060c \u0631\u0648\u0634 \u0641\u0627\u06a9\u0633-\u0648\u06cc\u0644\u06cc\u0627\u0645\u0632 \u0648 \u0647\u0627\u0648\u06a9\u06cc\u0646\u06af\u0632 (Ffowcs-Williams and Hawkings: FW-H) \u0645\u06cc\u200c\u0628\u0627\u0634\u062f \u06a9\u0647 \u062f\u0631 \u0627\u06cc\u0646 \u0646\u0648\u0634\u062a\u0627\u0631 \u0628\u0647 \u062a\u0641\u0635\u06cc\u0644 \u062a\u0634\u0631\u06cc\u062d \u0634\u062f\u0647 \u0627\u0633\u062a. \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u067e\u0647\u0646 \u0628\u0627\u0646\u062f \u0627\u0645\u0627 \u0645\u062a\u0646\u0648\u0639\u200c\u062a\u0631 \u0647\u0633\u062a\u0646\u062f. \u0645\u0647\u0645\u062a\u0631\u06cc\u0646 \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u067e\u0647\u0646 \u0628\u0627\u0646\u062f \u0645\u0648\u0631\u062f \u0628\u0631\u0631\u0633\u06cc \u0642\u0631\u0627\u0631 \u06af\u0631\u0641\u062a\u0647 \u062f\u0631 \u0627\u06cc\u0646\u062c\u0627 \u0639\u0628\u0627\u0631\u062a\u0646\u062f \u0627\u0632:<\/span><\/p>\n<ul>\n<li style=\"text-align: right;\"><span style=\"color: #000000;\">\u0641\u0631\u0645\u0648\u0644\u0627\u0633\u06cc\u0648\u0646 \u067e\u0631\u0648\u062f\u0645\u0646 (Proudman\u2019s Formula)<\/span><\/li>\n<li style=\"text-align: right;\"><span style=\"color: #000000;\">\u0645\u062f\u0644 \u0645\u0646\u0628\u0639 \u062c\u062a \u0646\u0648\u06cc\u0632 (Jet Noise Source Models)<\/span><\/li>\n<li style=\"text-align: right;\"><span style=\"color: #000000;\">\u0645\u062f\u0644 \u0645\u0646\u0628\u0639 \u0646\u0648\u06cc\u0632 \u0644\u0627\u06cc\u0647 \u0645\u0631\u0632\u06cc (The Boundary Layer Noise Source Model)<\/span><\/li>\n<li style=\"text-align: right;\"><span style=\"color: #000000;\">\u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 \u062f\u0631 \u0645\u0639\u0627\u062f\u0644\u0627\u062a \u0627\u0648\u06cc\u0644\u0631 \u062e\u0637\u06cc \u0634\u062f\u0647<\/span><\/li>\n<li style=\"text-align: right;\"><span style=\"color: #000000;\">\u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 \u062f\u0631 \u0645\u0639\u0627\u062f\u0644\u0647 \u0644\u0627\u06cc\u0644\u06cc (Lilley\u2019s Equation)<\/span><\/li>\n<\/ul>\n<h6 style=\"text-align: right;\"><span style=\"color: #339966;\"><em><strong>\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9:<\/strong><\/em><\/span><\/h6>\n<h4 style=\"text-align: right;\"><strong><span style=\"color: #800000;\">\u0645\u062f\u0644 \u0641\u0627\u06a9\u0633-\u0648\u06cc\u0644\u06cc\u0627\u0645\u0632 \u0648 \u0647\u0627\u0648\u06a9\u06cc\u0646\u06af\u0632 (FW-H) <\/span><\/strong><\/h4>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0645\u0639\u0627\u062f\u0644\u0647 \u0641\u0627\u06a9\u0633-\u0648\u06cc\u0644\u06cc\u0627\u0645\u0632 \u0648 \u0647\u0627\u0648\u06a9\u06cc\u0646\u06af\u0632 (FW-H) \u06cc\u06a9 \u0645\u0639\u0627\u062f\u0644\u0647 \u0645\u0648\u062c \u063a\u06cc\u0631 \u0647\u0645\u06af\u0646 (Inhomogeneous) \u06a9\u0647 \u0628\u0627 \u062f\u0633\u062a\u06a9\u0627\u0631\u06cc \u0648 \u0627\u0635\u0644\u0627\u062d \u0645\u0639\u0627\u062f\u0644\u0627\u062a \u067e\u06cc\u0648\u0633\u062a\u06af\u06cc \u0648 \u0645\u0645\u0646\u062a\u0645 \u0646\u0627\u0648\u06cc\u0631-\u0627\u0633\u062a\u0648\u06a9\u0633 \u0628\u062f\u0633\u062a \u0645\u06cc\u200c\u0622\u06cc\u062f. \u0627\u06cc\u0646 \u0645\u062f\u0644 \u0628\u0635\u0648\u0631\u062a \u0645\u0639\u0627\u062f\u0644\u0647 (1) \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u062f.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5866\" src=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/sound-intensity-300x194.png\" alt=\"\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9: \u0645\u0639\u0627\u062f\u0644\u0647 \u0645\u0648\u062c \u063a\u06cc\u0631 \u0647\u0645\u06af\u0646 FW_H\" width=\"710\" height=\"459\" srcset=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/sound-intensity-300x194.png 300w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/sound-intensity-768x497.png 768w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/sound-intensity-360x233.png 360w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/sound-intensity-600x388.png 600w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/sound-intensity.png 860w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">f=0 \u0628\u06cc\u0627\u0646\u06af\u0631 \u0645\u0631\u0632 \u0645\u062d\u0627\u0633\u0628\u0627\u062a\u06cc \u0645\u0648\u0631\u062f \u0646\u06cc\u0627\u0632 \u0628\u0631\u0627\u06cc \u062c\u0631\u06cc\u0627\u0646 \u062e\u0627\u0631\u062c\u06cc \u062f\u0631 \u0641\u0636\u0627\u06cc \u0646\u0627\u0645\u062d\u062f\u0648\u062f (f&gt;0) \u0627\u0633\u062a \u06a9\u0647 \u0634\u0631\u0627\u06cc\u0637 \u0644\u0627\u0632\u0645 \u0628\u0631\u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062a\u0648\u0627\u0628\u0639 \u0639\u0645\u0648\u0645\u06cc \u0648 \u0641\u0636\u0627\u06cc \u0622\u0632\u0627\u062f \u06af\u0631\u06cc\u0646 \u0631\u0627 \u0628\u0647 \u0645\u0646\u0638\u0648\u0631 \u062d\u0644 \u0645\u0633\u0626\u0644\u0647 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc\u200c\u0633\u0627\u0632\u062f. \u0633\u0637\u062d f=0 \u0628\u0627 \u0633\u0637\u062d \u0645\u0646\u0628\u0639 (\u0627\u0646\u062a\u0634\u0627\u0631) \u0645\u062a\u0646\u0627\u0638\u0631 \u0627\u0633\u062a. \u0647\u0645\u0686\u0646\u06cc\u0646 \u0633\u0637\u062d \u0645\u0630\u06a9\u0648\u0631 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0628\u0631 \u0633\u0637\u062d \u0628\u062f\u0646\u0647 (\u0646\u0641\u0648\u0630 \u0646\u0627\u067e\u0630\u06cc\u0631) \u06cc\u0627 \u0633\u0637\u062d \u0646\u0641\u0648\u0630 \u067e\u0630\u06cc\u0631 \u062c\u062f\u0627 \u0627\u0632 \u0628\u062f\u0646\u0647 \u0647\u0645\u0632\u0645\u0627\u0646 \u0634\u0648\u062f. n<sub>i<\/sub> \u0646\u06cc\u0632 \u0628\u0631\u062f\u0627\u0631 \u0646\u0631\u0645\u0627\u0644 \u0648\u0627\u062d\u062f \u0628\u0647 \u0633\u0645\u062a \u0641\u0636\u0627\u06cc \u062e\u0627\u0631\u062c (f&gt;0) \u0645\u06cc\u200c\u0628\u0627\u0634\u062f. a<sub>o <\/sub>\u0633\u0631\u0639\u062a \u0635\u0648\u062a \u062f\u0631 \u062f\u0648\u0631 \u062f\u0633\u062a (Far-Feild) \u0648 T<sub>ij <\/sub>\u062a\u0646\u0634 \u0644\u0627\u06cc\u062a \u0647\u06cc\u0644 (\u0645\u0639\u0627\u062f\u0644\u0647-2) \u0645\u06cc\u200c\u0628\u0627\u0634\u062f. P<sub>ij <\/sub>\u062a\u0627\u0646\u0633\u0648\u0631 \u062a\u0646\u0634 \u0641\u0634\u0627\u0631\u06cc \u0628\u0648\u062f\u0647 \u0648 \u0628\u0631\u0627\u06cc \u0633\u06cc\u0627\u0644 \u0627\u0633\u062a\u0648\u06a9\u0633\u06cc \u0628\u0635\u0648\u0631\u062a \u0645\u0639\u0627\u062f\u0644\u0647 (3) \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0645\u0642\u0627\u062f\u06cc\u0631 \u062c\u0631\u06cc\u0627\u0646 \u0622\u0632\u0627\u062f \u0628\u0627 \u0632\u06cc\u0631 \u0646\u0648\u06cc\u0633 o \u0628\u06cc\u0627\u0646 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f. <\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0645\u0639\u0627\u062f\u0644\u0647 (1) \u062a\u062d\u062a \u0634\u0631\u0627\u06cc\u0637 \u062c\u0631\u06cc\u0627\u0646 \u062f\u0631 \u0641\u0636\u0627\u06cc \u0622\u0632\u0627\u062f \u0648 \u0639\u062f\u0645 \u0648\u062c\u0648\u062f \u0645\u0627\u0646\u0639 \u0628\u06cc\u0646 \u0645\u0646\u0627\u0628\u0639 \u062a\u0648\u0644\u06cc\u062f \u0646\u0648\u06cc\u0632 \u0648 \u06af\u06cc\u0631\u0646\u062f\u0647\u200c\u0647\u0627\u06cc \u0635\u0648\u062a\u06cc\u060c \u0631\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0635\u0648\u0631\u062a \u062a\u062d\u0644\u06cc\u0644\u06cc \u0627\u0646\u062a\u06af\u0631\u0627\u0644 \u06af\u0631\u0641\u062a. \u062d\u0644 \u0646\u0647\u0627\u06cc\u06cc \u0634\u0627\u0645\u0644 \u0627\u0646\u062a\u06af\u0631\u0627\u0644\u200c\u0647\u0627\u06cc \u0633\u0637\u062d \u0648 \u062d\u062c\u0645 \u0645\u06cc\u200c\u0628\u0627\u0634\u062f. \u0627\u0646\u062a\u06af\u0631\u0627\u0644\u200c\u0647\u0627\u06cc \u0633\u0637\u062d\u06cc \u0645\u0628\u06cc\u0646 \u0633\u0647\u0645 \u0645\u0646\u0627\u0628\u0639 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u062a\u06a9 \u0642\u0637\u0628\u06cc (Monopole) \u0648 \u062f\u0648 \u0642\u0637\u0628\u06cc (Dipole) \u0648 \u062c\u0632\u0626\u06cc \u0627\u0632 \u0645\u0646\u0627\u0628\u0639 \u0686\u0647\u0627\u0631 \u0642\u0637\u0628\u06cc (Quadrupole) \u0645\u06cc\u200c\u0628\u0627\u0634\u062f. \u0627\u0646\u062a\u06af\u0631\u0627\u0644\u200c\u0647\u0627\u06cc \u062d\u062c\u0645\u06cc \u0646\u06cc\u0632 \u0645\u0639\u0631\u0641 \u0645\u0646\u0627\u0628\u0639 \u0686\u0647\u0627\u0631 \u0642\u0637\u0628\u06cc (\u062d\u062c\u0645\u06cc)\u060c \u062f\u0631 \u0646\u0627\u062d\u06cc\u0647\u200c\u0627\u06cc \u062e\u0627\u0631\u062c \u0627\u0632 \u0633\u0637\u062d \u0645\u0646\u0628\u0639 \u0647\u0633\u062a\u0646\u062f. \u0633\u0647\u0645 \u0627\u0646\u062a\u06af\u0631\u0627\u0644\u200c\u0647\u0627\u06cc \u062d\u062c\u0645\u06cc \u0632\u0645\u0627\u0646\u06cc\u06a9\u0647 \u0633\u0631\u0639\u062a \u062c\u0631\u06cc\u0627\u0646 \u0632\u06cc\u0631 \u0635\u0648\u062a \u0648 \u062e\u06cc\u0644 \u06a9\u0645 \u0628\u0648\u062f\u0647 \u0648 \u0647\u0645\u0686\u0646\u06cc\u0646 \u0633\u0637\u062d \u0645\u0646\u0628\u0639 \u0646\u0632\u062f\u06cc\u06a9 \u0628\u0647 \u0646\u0627\u062d\u06cc\u0647 \u0645\u0646\u0628\u0639 \u0628\u0627\u0634\u062f\u060c \u06a9\u0648\u0686\u06a9 \u0645\u06cc\u200c\u0634\u0648\u062f. \u062f\u0631 \u0646\u062a\u06cc\u062c\u0647 \u0645\u0639\u0627\u062f\u0644\u0647 \u0633\u0627\u062f\u0647 \u0634\u062f\u0647 (4) \u00a0\u0628\u0631\u0627\u06cc \u062a\u0639\u0631\u06cc\u0641 \u0641\u0634\u0627\u0631 \u0635\u0648\u062a &#8216;p \u062d\u0627\u0635\u0644 \u062e\u0648\u0627\u0647\u062f \u0634\u062f.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5873\" src=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-1-300x219.png\" alt=\"\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9: \u0645\u0639\u0627\u062f\u0644\u0627\u062a  FW_H\" width=\"710\" height=\"519\" srcset=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-1-300x219.png 300w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-1-768x561.png 768w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-1-360x263.png 360w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-1-600x439.png 600w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-1.png 859w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5874\" src=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-2-300x117.png\" alt=\"\" width=\"710\" height=\"276\" srcset=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-2-300x117.png 300w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-2-768x299.png 768w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-2-360x140.png 360w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-2-600x234.png 600w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/FW-H-2.png 858w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/p>\n<h4 style=\"text-align: right;\"><span style=\"color: #000000;\"><strong>\u062a\u0648\u062c\u0647:<\/strong><\/span><\/h4>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0632\u0645\u0627\u0646\u06cc\u06a9\u0647 \u0633\u0637\u062d \u0627\u0646\u062a\u06af\u0631\u0627\u0644 \u0645\u0646\u0637\u0628\u0642 \u0628\u0631 \u06cc\u06a9 \u062f\u06cc\u0648\u0627\u0631\u0647 \u0646\u0641\u0648\u0630 \u0646\u0627\u067e\u0630\u06cc\u0631 \u0628\u0627\u0634\u062f\u060c \u062f\u0648 \u062a\u0631\u0645 \u0633\u0645\u062a \u0631\u0627\u0633\u062a \u0645\u0639\u0627\u062f\u0644\u0647 (4)\u060c p\u2019<sub>T<\/sub> \u0648 p\u2019<sub>L<\/sub> \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0636\u062e\u0627\u0645\u062a \u0648 \u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u0648 \u0628\u0631\u0627\u0633\u0627\u0633 \u0645\u0639\u0627\u0646\u06cc \u0641\u06cc\u0632\u06cc\u06a9\u06cc\u0634\u0627\u0646 \u0645\u0637\u0631\u062d \u0645\u06cc\u200c\u0634\u0648\u0646\u062f.\u00a0 \u0628\u0631\u0627\u06a9\u062a\u200c\u0647\u0627\u06cc \u0645\u0639\u0627\u062f\u0644\u0627\u062a (5) \u0648 (6) \u0628\u06cc\u0627\u0646\u06af\u0631 \u0627\u06cc\u0646 \u0645\u0648\u0636\u0648\u0639 \u0647\u0633\u062a\u0646\u062f \u06a9\u0647 \u0647\u0633\u062a\u0647\u200c\u0647\u0627\u06cc \u0627\u0646\u062a\u06af\u0631\u0627\u0644 \u062f\u0631 \u0632\u0645\u0627\u0646\u200c\u0647\u0627\u06cc \u062a\u0623\u062e\u06cc\u0631\u060c \u03c4\u060c (\u06a9\u0647 \u0628\u0635\u0648\u0631\u062a \u062a\u0627\u0628\u0639\u06cc \u0627\u0632 \u0632\u0645\u0627\u0646 \u06af\u06cc\u0631\u0646\u062f\u0647\u060c t\u060c \u0648 \u0641\u0627\u0635\u0644\u0647 \u062a\u0627 \u06af\u06cc\u0631\u0646\u062f\u0647\u060c r\u060c \u062f\u0631 \u0645\u0639\u0627\u062f\u0644\u0647-9 \u062a\u0639\u0631\u06cc\u0641 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f) \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u06cc\u200c\u06af\u0631\u062f\u0646\u062f. \u0645\u0642\u062f\u0627\u0631 L<sub>i<\/sub> \u0646\u06cc\u0632 \u0628\u0631\u0627\u0628\u0631 \u0628\u0627 \u0636\u0631\u0628 \u0627\u0633\u06a9\u0627\u0644\u0631 L<sub>i<\/sub>M<sub>i<\/sub> \u0645\u06cc\u200c\u0628\u0627\u0634\u062f. \u0639\u0644\u0627\u0645\u062a \u062f\u0627\u062a \u0631\u0648\u06cc \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u0645\u0639\u0627\u062f\u0644\u0627\u062a \u0641\u0648\u0642 \u0628\u06cc\u0627\u0646\u06af\u0631 \u062a\u0645\u0627\u06cc\u0632 \u0632\u0645\u0627\u0646 \u0645\u0646\u0628\u0639 \u0627\u0632 \u0622\u0646 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u0633\u062a.<\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0628\u0631\u0627\u06cc \u0645\u062d\u0627\u0633\u0628\u0647 \u0635\u062f\u0627\u06cc \u0622\u0626\u0631\u0648\u062f\u06cc\u0646\u0627\u0645\u06cc\u06a9\u06cc \u0646\u0627\u0634\u06cc \u0627\u0632 \u062c\u0631\u06cc\u0627\u0646 \u062e\u0627\u0631\u062c\u06cc \u062d\u0648\u0644 \u06cc\u06a9 \u062c\u0633\u0645 \u0644\u0627\u0632\u0645\u0633\u062a \u0627\u062b\u0631\u0627\u062a \u0647\u0645\u0631\u0641\u062a (Convective Effects) \u0644\u062d\u0627\u0638 \u06af\u0634\u062a\u0647 \u0648 \u0628\u0631\u062f\u0627\u0631 \u0633\u0631\u0639\u062a \u062c\u0631\u06cc\u0627\u0646 \u062f\u0631 \u062f\u0648\u0631 \u062f\u0633\u062a V<sub>conv<\/sub> \u00a0\u0646\u06cc\u0632 \u0645\u0634\u062e\u0635 \u0634\u0648\u062f. \u0627\u06cc\u0646 \u06af\u0632\u06cc\u0646\u0647 \u0645\u0639\u0627\u062f\u0644 \u0648\u0636\u0639\u06cc\u062a \u062a\u062c\u0631\u0628\u06cc \u0647\u0645\u0686\u0648\u0646 \u062a\u0633\u062a\u200c\u0647\u0627\u06cc \u067e\u0631\u0648\u0627\u0632\u06cc (\u06a9\u0647 \u062f\u0631 \u0622\u0646 \u0631\u0648\u06cc \u0647\u0648\u0627\u067e\u06cc\u0645\u0627 \u0645\u06cc\u06a9\u0631\u0648\u0641\u0648\u0646(\u0647\u0627) \u0646\u0635\u0628 \u0645\u06cc\u200c\u0634\u0648\u062f) \u0648 \u06cc\u0627 \u062a\u0633\u062a\u200c\u0647\u0627\u06cc \u062a\u0648\u0646\u0644 \u0628\u0627\u062f (\u06a9\u0647 \u062f\u0631 \u0622\u0646 \u0645\u06cc\u06a9\u0631\u0648\u0641\u0648\u0646\u200c\u0647\u0627 \u062f\u0631 \u0647\u0633\u062a\u0647 \u062c\u0631\u06cc\u0627\u0646 \u062a\u0648\u0646\u0644 \u0628\u0627\u062f \u0646\u0635\u0628 \u0645\u06cc\u200c\u0634\u0648\u0646\u062f) \u0645\u06cc\u200c\u0628\u0627\u0634\u062f. \u062f\u0631 \u0635\u0648\u0631\u062a \u0627\u0639\u0645\u0627\u0644 \u0634\u0631\u0627\u06cc\u0637 \u0647\u0645\u0631\u0641\u062a\u06cc\u060c \u0645\u062d\u0627\u0633\u0628\u0647 \u0632\u0645\u0627\u0646 \u062a\u0623\u062e\u06cc\u0631 \u0628\u0647 \u0645\u0631\u0627\u062a\u0628 \u067e\u06cc\u0686\u06cc\u062f\u0647\u200c\u062a\u0631 \u0627\u0632 \u0645\u0639\u0627\u062f\u0644\u0647 (9) \u062e\u0648\u0627\u0647\u062f \u0628\u0648\u062f. \u0647\u0645\u0627\u0646\u0637\u0648\u0631 \u06a9\u0647 \u062f\u0631 \u0634\u06a9\u0644 (1) \u0646\u0634\u0627\u0646 \u062f\u0627\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a\u060c \u0633\u0631\u0639\u062a \u0627\u0646\u062a\u0634\u0627\u0631 \u0635\u0648\u062a\u060c a<sub>\u03b8<\/sub>\u060c \u062f\u0631 \u0646\u06cc\u0645\u06a9\u0631\u0647 \u0628\u0627\u0644\u0627\u062f\u0633\u062a \u062c\u0631\u06cc\u0627\u0646 \u0628\u06cc\u0634\u062a\u0631 \u0627\u0632 a<sub>o<\/sub> \u0648 \u062f\u0631 \u0646\u06cc\u0645\u06a9\u0631\u0647 \u067e\u0627\u06cc\u06cc\u0646 \u062f\u0633\u062a \u06a9\u0645\u062a\u0631 \u0627\u0632 \u0622\u0646 \u0645\u06cc\u200c\u0628\u0627\u0634\u062f. \u03b8 \u0646\u06cc\u0632 \u062c\u0647\u062a \u0632\u0627\u0648\u06cc\u0647 \u0627\u0632 \u0628\u0627\u0644\u0627\u062f\u0633\u062a \u0628\u0647 \u0633\u0645\u062a \u06af\u06cc\u0631\u0646\u062f\u0647 \u0646\u0635\u0628 \u0634\u062f\u0647 \u0627\u0633\u062a. \u0637\u0628\u0642 \u0634\u06a9\u0644 (1) \u0632\u0645\u0627\u0646 \u062a\u0623\u062e\u06cc\u0631 \u0628\u0631\u0627\u0633\u0627\u0633 \u0645\u0639\u0627\u062f\u0644\u0647 (10) \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0628\u062f\u06cc\u0647\u06cc \u0627\u0633\u062a \u0627\u062b\u0631\u0627\u062a \u0647\u0645\u0631\u0641\u062a\u06cc \u062a\u0646\u0647\u0627 \u0628\u0631\u0627\u06cc \u062c\u0631\u06cc\u0627\u0646\u200c\u0647\u0627\u06cc \u062f\u0648\u0631 \u062f\u0633\u062a \u0632\u06cc\u0631 \u0635\u0648\u062a (V<sub>conv<\/sub>&lt;a<sub>o<\/sub>) \u0645\u0641\u0647\u0648\u0645 \u062f\u0627\u0631\u062f.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-5882 aligncenter\" src=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/convection-effects.png\" alt=\"\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9\u061b \u0627\u062b\u0631 \u0647\u0645\u0631\u0641\u062a\u06cc\" width=\"262\" height=\"250\" \/><\/p>\n<h5 style=\"text-align: center;\"><span style=\"color: #000000;\">\u0634\u06a9\u0644-1: \u0634\u0645\u0627\u062a\u06cc\u06a9\u06cc \u0627\u0632 \u0627\u062b\u0631 \u0647\u0645\u0631\u0641\u062a \u0631\u0648\u06cc \u0645\u062d\u0627\u0633\u0628\u0647 \u0632\u0645\u0627\u0646 \u062a\u0623\u062e\u06cc\u0631<\/span><\/h5>\n<h4 style=\"text-align: right;\"><span style=\"color: #000000;\"><span style=\"color: #ff0000;\"><strong>\u0646\u06a9\u0627\u062a \u0645\u0647\u0645 \u062f\u0631 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0645\u062f\u0644 FW-H<\/strong><\/span><\/span><\/h4>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0628\u0637\u0648\u0631 \u06a9\u0644\u06cc \u0646\u06a9\u0627\u062a \u0645\u0647\u0645 \u062f\u0631 \u0628\u06a9\u0627\u0631 \u06af\u06cc\u0631\u06cc \u0645\u062f\u0644 FW-H \u0639\u0628\u0627\u0631\u062a\u0646\u062f \u0627\u0632:<\/span><\/p>\n<ul>\n<li style=\"text-align: right;\"><span style=\"color: #000000;\">\u062f\u0631 \u0646\u0631\u0645 \u0627\u0641\u0632\u0627\u0631 Fluent \u0641\u0631\u0645\u0648\u0644\u0627\u0633\u06cc\u0648\u0646 FW-H \u0628\u0631\u0627\u06cc \u0633\u0637\u0648\u062d \u062f\u0648\u0631\u0627\u0646\u06cc \u0647\u0645\u0686\u0648\u0646 \u0633\u0637\u0648\u062d \u062b\u0627\u0628\u062a \u0642\u0627\u0628\u0644 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0633\u062a.<\/span><\/li>\n<li style=\"text-align: right;\"><span style=\"color: #000000;\">\u0645\u0647\u0645 \u0646\u06cc\u0633\u062a \u06a9\u0647 \u0633\u0637\u062d f=0 \u0645\u0646\u0637\u0628\u0642 \u0628\u0631 \u062f\u06cc\u0648\u0627\u0631\u0647 \u06cc\u0627 \u0633\u0637\u0648\u062d \u062c\u0633\u0645 \u0628\u0627\u0634\u062f. \u0641\u0631\u0645\u0648\u0644\u0627\u0633\u06cc\u0648\u0646 FW-H \u0628\u0647 \u06af\u0648\u0646\u0647\u200c\u0627\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0628\u062a\u0648\u0627\u0646 \u0633\u0637\u062d f=0 \u0631\u0627 \u062f\u0631 \u062f\u0627\u062e\u0644 \u062f\u0627\u0645\u0646\u0647 \u0646\u06cc\u0632 \u0642\u0631\u0627\u0631 \u062f\u0627\u062f.<\/span><\/li>\n<li style=\"text-align: right;\"><span style=\"color: #000000;\">\u062f\u0631 \u0632\u0645\u0627\u0646\u06cc\u06a9\u0647 \u0633\u0637\u062d \u0645\u0646\u0628\u0639 \u0635\u0648\u062a \u0646\u0641\u0648\u0630 \u067e\u0630\u06cc\u0631 (\u062f\u0631 \u062f\u0627\u062e\u0644 \u062f\u0627\u0645\u0646\u0647 \u0645\u062d\u0627\u0633\u0628\u0627\u062a\u06cc \u06cc\u0627 \u0631\u0648\u06cc \u0645\u0631\u0632\u0647\u0627\u06cc \u0627\u06cc\u0646\u062a\u0631\u0641\u06cc\u0633\u06cc \u062b\u0627\u0628\u062a \u06cc\u0627 \u0645\u062a\u063a\u06cc\u0631) \u062f\u0631 \u0641\u0627\u0635\u0644\u0647 \u0645\u0634\u062e\u0635\u06cc\u060c \u062c\u062f\u0627 \u0627\u0632 \u0633\u0637\u062d \u062c\u0633\u0645 \u0648\u0627\u0642\u0639 \u0634\u0648\u062f \u0622\u0646\u06af\u0627\u0647\u060c \u062d\u0644\u200c\u0647\u0627\u06cc \u0627\u0646\u062a\u06af\u0631\u0627\u0644\u06cc \u0645\u0639\u0627\u062f\u0644\u0627\u062a 5 \u0648 6 \u062f\u0631 \u0628\u0631\u06af\u06cc\u0631\u0646\u062f\u0647 \u0628\u062e\u0634\u200c\u0647\u0627\u06cc\u06cc \u0627\u0632 \u0645\u0646\u0627\u0628\u0639 \u0686\u0647\u0627\u0631\u0642\u0637\u0628\u06cc \u062f\u0631 \u0646\u0648\u0627\u062d\u06cc \u0645\u062d\u0635\u0648\u0631 \u0628\u0647 \u0633\u0637\u062d \u0645\u0646\u0628\u0639 \u0645\u06cc\u200c\u0628\u0627\u0634\u0646\u062f. \u0627\u0644\u0628\u062a\u0647 \u062f\u0631 \u0627\u06cc\u0646 \u0634\u0631\u0627\u06cc\u0637\u060c \u0634\u0628\u06a9\u0647 \u062a\u0648\u0644\u06cc\u062f \u0634\u062f\u0647 \u0628\u0627\u06cc\u062f \u0628\u0647 \u0627\u0646\u062f\u0627\u0632\u0647 \u06a9\u0627\u0641\u06cc \u0631\u06cc\u0632 \u0628\u0627\u0634\u062f \u062a\u0627 \u0628\u062a\u0648\u0627\u0646\u062f \u0633\u0627\u062e\u062a\u0627\u0631 \u062c\u0631\u06cc\u0627\u0646 \u06af\u0630\u0631\u0627 \u062f\u0631 \u062f\u0627\u062e\u0644 \u062d\u062c\u0645 \u0645\u062d\u0635\u0648\u0631 \u06cc\u0627 \u0633\u0637\u062d \u0646\u0641\u0648\u0630\u067e\u0630\u06cc\u0631 \u0631\u0627 \u0645\u062f\u0644 \u06a9\u0646\u062f.<\/span><\/li>\n<\/ul>\n<h6 style=\"text-align: right;\"><span style=\"color: #339966;\"><em><strong>\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9: <\/strong><\/em><\/span><\/h6>\n<h3 style=\"text-align: right;\"><span style=\"color: #800000;\"><strong>\u0645\u062f\u0644\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 \u0646\u0648\u06cc\u0632 \u067e\u0647\u0646 \u0628\u0627\u0646\u062f<\/strong><\/span><\/h3>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0628\u0631\u062e\u0644\u0627\u0641 \u0631\u0648\u0634\u200c\u0647\u0627\u06cc \u0645\u0633\u062a\u0642\u06cc\u0645 \u0648 \u0627\u0646\u062a\u06af\u0631\u0644\u06cc FW-H\u060c \u0645\u062f\u0644\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 \u0646\u0648\u06cc\u0632 \u067e\u0647\u0646 \u0628\u0627\u0646\u062f (Boradband Noise Source Models) \u0628\u0647 \u062d\u0644 \u06af\u0630\u0631\u0627\u06cc \u0645\u0639\u0627\u062f\u0644\u0627\u062a \u062d\u0627\u06a9\u0645 \u0628\u0631 \u062c\u0631\u06cc\u0627\u0646 \u0633\u06cc\u0627\u0644 \u0627\u062d\u062a\u06cc\u0627\u062c\u06cc \u0646\u062f\u0627\u0631\u0646\u062f. \u0633\u0631\u0639\u062a \u0645\u062a\u0648\u0633\u0637\u060c \u0627\u0646\u0631\u0698\u06cc \u062c\u0646\u0628\u0634\u06cc \u0622\u0634\u0641\u062a\u06af\u06cc (k) \u0648 \u0646\u0631\u062e \u0627\u062a\u0644\u0627\u0641 \u0622\u0634\u0641\u062a\u06af\u06cc (\u03b5) \u0645\u0647\u0645\u062a\u0631\u06cc\u0646 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u0648\u0631\u0648\u062f\u06cc \u062f\u0631 \u0628\u0631\u0627\u06cc \u062a\u0645\u0627\u0645\u06cc \u0645\u062f\u0644\u200c\u0647\u0627\u06cc \u067e\u0647\u0646 \u0628\u0627\u0646\u062f \u0647\u0633\u062a\u0646\u062f. \u0628\u0646\u0627\u0628\u0631\u0627\u06cc\u0646 \u0645\u062f\u0644\u200c\u0647\u0627\u06cc \u0622\u0634\u0641\u062a\u06af\u06cc \u0645\u0639\u0645\u0648\u0644 RANS \u0628\u0631\u0627\u06cc \u0634\u0628\u06cc\u0647 \u0633\u0627\u0632\u06cc \u0645\u06cc\u062f\u0627\u0646 \u062c\u0631\u06cc\u0627\u0646 \u062f\u0631 \u0645\u0646\u0627\u0628\u0639 \u0646\u0648\u06cc\u0632 \u067e\u0647\u0646 \u0628\u0627\u0646\u062f \u06a9\u0627\u0641\u06cc\u0633\u062a.<\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0627\u0632 \u0622\u0646\u062c\u0627\u0626\u06cc\u06a9\u0647 \u06a9\u0646\u062a\u0631\u0644 \u0648 \u06a9\u0627\u0647\u0634 \u0646\u0648\u06cc\u0632 \u0627\u06cc\u062c\u0627\u062f \u0634\u062f\u0647 \u062a\u0648\u0633\u0637 \u062c\u0631\u06cc\u0627\u0646 \u0645\u0647\u0645\u062a\u0631\u06cc\u0646 \u0647\u062f\u0641 \u062f\u0631 \u0634\u0628\u06cc\u0647 \u0633\u0627\u0632\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0627\u0633\u062a\u060c \u0627\u0632 \u0627\u06cc\u0646 \u0645\u062f\u0644\u200c\u0647\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0631\u0627\u06cc \u062a\u0634\u062e\u06cc\u0635 \u0645\u0646\u0628\u0639 (\u0645\u0646\u0627\u0628\u0639) \u0646\u0648\u06cc\u0632 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0631\u062f \u062a\u0627 \u0645\u0634\u062e\u0635 \u0634\u0648\u062f \u06a9\u0647 \u06a9\u062f\u0627\u0645 \u0642\u0633\u0645\u062a \u0627\u0632 \u062c\u0631\u06cc\u0627\u0646 \u0645\u0647\u0645\u062a\u0631\u0646 \u0646\u0642\u0634 \u0631\u0627 \u062f\u0631 \u062a\u0648\u0644\u06cc\u062f \u0646\u0648\u06cc\u0632 \u0628\u0627\u0632\u06cc \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0627\u0644\u0628\u062a\u0647 \u062a\u0648\u062c\u0647 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u06cc\u062f \u06a9\u0647 \u0627\u06cc\u0646 \u0645\u062f\u0644\u200c\u0647\u0627\u060c \u0645\u0646\u0628\u0639 \u0635\u062f\u0627 \u062f\u0631 \u06af\u06cc\u0631\u0646\u062f\u0647 \u0647\u0627 \u0631\u0627 \u067e\u06cc\u0634 \u0628\u06cc\u0646\u06cc \u0646\u0645\u06cc\u200c\u06a9\u0646\u0646\u062f.<\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0686\u0646\u062f\u06cc\u0646 \u0645\u062f\u0644 \u0645\u0646\u0628\u0639 \u0646\u0648\u06cc\u0632 \u067e\u0647\u0646 \u0628\u0627\u0646\u062f \u062a\u0648\u0633\u0639\u0647 \u06cc\u0627\u0641\u062a\u0647 \u0627\u0633\u062a. \u0627\u06cc\u0646 \u0645\u062f\u0644\u200c\u0647\u0627 \u0628\u0647 \u0634\u0645\u0627 \u0627\u0645\u06a9\u0627\u0646 \u0645\u06cc\u200c\u062f\u0647\u062f \u0633\u0647\u0645 \u0645\u062d\u0644\u06cc (\u062f\u0631 \u0648\u0627\u062d\u062f \u0633\u0637\u062d \u06cc\u0627 \u062d\u062c\u0645 \u0648\u0627\u062d\u062f) \u0631\u0627 \u0628\u0647 \u06a9\u0644 \u0642\u062f\u0631\u062a \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u062a\u0648\u0644\u06cc\u062f \u0634\u062f\u0647 \u062a\u0648\u0633\u0637 \u062c\u0631\u06cc\u0627\u0646 \u062a\u0639\u06cc\u06cc\u0646 \u06a9\u0646\u06cc\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u0646\u0648\u0634\u062a\u0627\u0631 \u0645\u0647\u0645\u062a\u0631\u06cc\u0646 \u0645\u062f\u0644\u200c\u0647\u0627\u06cc \u0645\u0648\u062c\u0648\u062f \u06a9\u0647 \u062f\u0631 \u0646\u0631\u0645 \u0627\u0641\u0632\u0627\u0631 Fluent \u0646\u06cc\u0632 \u0645\u0648\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0642\u0631\u0627\u0631 \u0645\u06cc\u200c\u06af\u06cc\u0631\u0646\u062f \u062a\u0634\u0631\u06cc\u062d \u0634\u062f\u0647 \u0627\u0633\u062a.<\/span><\/p>\n<h6 style=\"text-align: right;\"><span style=\"color: #339966;\"><em><strong>\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9:<\/strong><\/em><\/span><\/h6>\n<h4 style=\"text-align: right;\"><span style=\"color: #ff0000;\"><strong>\u0641\u0631\u0645\u0648\u0644\u0627\u0633\u06cc\u0648\u0646 \u067e\u0631\u0648\u062f\u0645\u0646 (Proudman\u2019s Formula)<\/strong><\/span><\/h4>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u067e\u0631\u0648\u062f\u0645\u0646 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0642\u06cc\u0627\u0633 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 (Acoustic Analogy) \u0644\u0627\u06cc\u062a \u0647\u06cc\u0644 (Lighthill)\u060c \u0631\u0627\u0628\u0637\u0647\u200c\u0627\u06cc \u0628\u0631\u0627\u06cc \u062a\u0648\u0627\u0646 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u062a\u0648\u0644\u06cc\u062f \u0634\u062f\u0647 \u062a\u0648\u0633\u0637 \u0622\u0634\u0641\u062a\u06af\u06cc \u0627\u06cc\u0632\u0648\u062a\u0631\u0648\u067e\u06cc\u06a9 \u0628\u062f\u0648\u0646 \u062c\u0631\u06cc\u0627\u0646 \u0645\u06cc\u0627\u0646\u06af\u06cc\u0646 \u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0646\u0645\u0648\u062f. \u0628\u0639\u062f\u0647\u0627 \u0644\u0627\u06cc\u0644\u06cc (Lilley) \u0628\u0631\u0627\u0633\u0627\u0633 \u0645\u062d\u0627\u0633\u0628\u0647 \u062a\u0641\u0627\u0636\u0644 \u0632\u0645\u0627\u0646 \u062a\u0623\u062e\u06cc\u0631 \u06a9\u0647 \u062f\u0631 \u0645\u0639\u0627\u062f\u0644\u0647 \u067e\u0631\u0648\u062f\u0645\u0646 \u0635\u0631\u0641 \u0646\u0638\u0631 \u0634\u062f\u0647 \u0628\u0648\u062f\u060c \u0631\u0627\u0628\u0637\u0647 \u062c\u062f\u06cc\u062f\u062a\u0631\u06cc \u0627\u0631\u0627\u0626\u0647 \u06a9\u0631\u062f. \u0647\u0631 \u062f\u0648 \u0631\u0627\u0628\u0637\u0647 \u0645\u0639\u0631\u0641 \u062a\u0648\u0627\u0646 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0646\u0627\u0634\u06cc \u0627\u0632 \u0622\u0634\u0641\u062a\u06af\u06cc \u0627\u06cc\u0632\u0648\u062a\u0631\u0648\u067e\u06cc\u06a9 \u062f\u0631 \u0648\u0627\u062d\u062f \u062d\u062c\u0645 \u0645\u06cc\u200c\u0628\u0627\u0634\u0646\u062f (\u0645\u0639\u0627\u062f\u0644\u0647 11).<\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u062f\u0631 \u0631\u0627\u0628\u0637\u0647 \u00a0(11) \u067e\u0627\u0631\u0627\u0645\u062a\u0631\u0647\u0627\u06cc u \u0648 l \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628 \u0633\u0631\u0639\u062a \u0622\u0634\u0641\u062a\u06af\u06cc \u0648 \u0637\u0648\u0644 \u0645\u0634\u062e\u0635\u0647 \u0647\u0633\u062a\u0646\u062f. \u062f\u0631 \u0647\u0645\u06cc\u0646 \u0631\u0627\u0628\u0637\u0647\u060c a<sub>o<\/sub> \u0633\u0631\u0639\u062a \u0635\u0648\u062a \u0648 \u03b1 \u062b\u0627\u0628\u062a \u0645\u062f\u0644 \u0645\u06cc\u200c\u0628\u0627\u0634\u062f. \u0628\u0631\u0627\u0633\u0627\u0633 \u062a\u0631\u0645\u200c\u0647\u0627\u06cc k \u0648 \u03b5\u060c \u0645\u0639\u0627\u062f\u0644\u0647 (11) \u0628\u0635\u0648\u0631\u062a \u0631\u0648\u0627\u0628\u0637 (12) \u0648 (13) \u0628\u0627\u0632\u0646\u0648\u06cc\u0633\u06cc \u0645\u06cc\u200c\u0634\u0648\u062f. \u062b\u0627\u0628\u062a \u03b1<sub>\u03b5<\/sub> \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u062d\u0644 DNS \u0622\u0634\u0641\u062a\u06af\u06cc \u0627\u06cc\u0632\u0648\u062a\u0631\u0648\u067e\u06cc\u06a9 \u0628\u0631\u0627\u0628\u0631 \u0628\u0627 0.1 \u062f\u0631 \u0646\u0638\u0631 \u06af\u0631\u0641\u062a\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a. \u0642\u0627\u0628\u0644 \u062a\u0648\u062c\u0647 \u0627\u0633\u062a \u062a\u0648\u0627\u0646 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0631\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u062f\u0631\u0648 \u0627\u062d\u062f dB (\u0645\u0639\u0627\u062f\u0644\u0647 14) \u0646\u06cc\u0632 \u062a\u0639\u06cc\u06cc\u0646 \u06a9\u0631\u062f.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5894\" src=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/proudman-formula-300x121.png\" alt=\"\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9: \u0641\u0631\u0645\u0648\u0644 \u067e\u0631\u0648\u062f\u0645\u0646\" width=\"710\" height=\"286\" srcset=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/proudman-formula-300x121.png 300w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/proudman-formula-768x310.png 768w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/proudman-formula-360x145.png 360w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/proudman-formula-600x242.png 600w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/proudman-formula.png 856w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0641\u0631\u0645\u0648\u0644 \u067e\u0631\u0648\u062f\u0645\u0646 \u0645\u0642\u062f\u0627\u0631 \u062a\u0642\u0631\u06cc\u0628\u06cc \u0627\u0632 \u0633\u0647\u0645 \u0645\u062d\u0644\u06cc \u062a\u0648\u0627\u0646 \u06a9\u0644 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0628\u0631 \u0648\u0627\u062d\u062f \u062d\u062c\u0645 \u062f\u0631 \u06cc\u06a9 \u0645\u06cc\u062f\u0627\u0646 \u0622\u0634\u062a\u0647 \u0645\u0634\u062e\u0635 \u0631\u0627 \u0628\u06cc\u0627\u0646 \u0645\u06cc\u200c\u06a9\u0646\u062f. \u0628\u0647 \u0647\u0631 \u0635\u0648\u0631\u062a \u0628\u0627\u06cc\u062f \u0627\u062d\u062a\u06cc\u0627\u0637 \u0644\u0627\u0632\u0645 \u0631\u0627 \u0647\u0646\u06af\u0627\u0645 \u062a\u0641\u0633\u06cc\u0631 \u0646\u062a\u0627\u06cc\u062c \u0628\u0627 \u062a\u0648\u062c\u0647 \u0628\u0647 \u0645\u0641\u0631\u0648\u0636\u0627\u062a \u0627\u062a\u062e\u0627\u0630 \u0634\u062f\u0647 \u0644\u062d\u0627\u0638 \u0646\u0645\u0648\u062f. \u0627\u06cc\u0646 \u0645\u0641\u0631\u0648\u0636\u0627\u062a \u0634\u0627\u0645\u0644 \u0627\u0639\u062f\u0627\u062f \u0631\u06cc\u0646\u0648\u0644\u062f\u0632 \u0628\u0627\u0644\u0627\u060c\u00a0 \u0645\u0627\u062e \u06a9\u0648\u0686\u06a9\u060c \u0627\u06cc\u0632\u0648\u062a\u0631\u0648\u067e\u06cc \u0622\u0634\u0641\u062a\u06af\u06cc \u0648 \u0633\u0631\u0639\u062a \u0645\u062a\u0648\u0633\u0637 \u0635\u0641\u0631 \u0645\u06cc\u200c\u0628\u0627\u0634\u062f.<\/span><\/p>\n<h6 style=\"text-align: right;\"><span style=\"color: #339966;\"><em><strong>\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9:<\/strong><\/em><\/span><\/h6>\n<h4 style=\"text-align: right;\"><span style=\"color: #ff0000;\"><strong>\u0645\u062f\u0644 \u0645\u0646\u0628\u0639 \u062c\u062a \u0646\u0648\u06cc\u0632 (Jet Noise Source Model)<\/strong><\/span><\/h4>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0627\u06cc\u0646 \u0645\u062f\u0644 \u0645\u0646\u0628\u0639 \u0628\u0631\u0627\u06cc \u062c\u062a\u200c\u0647\u0627\u06cc \u0645\u062a\u0642\u0627\u0631\u0646 \u0645\u062d\u0648\u0631\u06cc \u0648 \u0628\u0631\u0627\u0633\u0627\u0633 \u062a\u062d\u0642\u06cc\u0642 \u06af\u0644\u062f\u0633\u062a\u06cc\u0646 (Goldstein)\u00a0 \u0645\u06cc\u200c\u0628\u0627\u0634\u062f. \u062f\u0631 \u0648\u0627\u0642\u0639 \u0645\u062f\u0644 \u0627\u0635\u0644\u06cc \u062a\u0648\u0633\u0637 \u0631\u06cc\u0628\u0646\u0631 (Ribner) \u067e\u06cc\u0634\u0646\u0647\u0627\u062f \u0634\u062f\u0647 \u0628\u0648\u062f. \u06af\u0644\u062f\u0633\u062a\u06cc\u0646 \u0645\u062f\u0644 \u0631\u06cc\u0628\u0646\u0631 \u0631\u0627 \u0628\u0631\u0627\u06cc \u062f\u0633\u062a\u06cc\u0627\u0628\u06cc \u0628\u0647 \u0645\u0642\u062f\u0627\u0631 \u062f\u0642\u06cc\u0642\u062a\u0631 \u0646\u0627\u0647\u0645\u0633\u0627\u0646\u06af\u0631\u062f\u06cc (Anisotropy) \u0622\u0634\u0641\u062a\u06af\u06cc \u062f\u0631 \u062c\u062a\u200c\u0647\u0627\u06cc \u0622\u0634\u0641\u062a\u0647 \u0645\u062a\u0642\u0627\u0631\u0646 \u0645\u062d\u0648\u0631\u06cc \u0628\u0647\u0628\u0648\u062f \u0628\u062e\u0634\u06cc\u062f. \u062f\u0631 \u0645\u062f\u0644 \u06af\u0644\u062f\u0633\u062a\u06cc\u0646 \u062a\u0648\u0627\u0646 \u0627\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0633\u0627\u062a\u0639 \u0634\u062f\u0647 \u062a\u0648\u0633\u0637 \u062d\u062c\u0645 \u0648\u0627\u062d\u062f \u062c\u062a \u0622\u0634\u0641\u062a\u0647 \u0648 \u0637\u0628\u0642 \u0645\u0639\u0627\u062f\u0644\u0647 (15) \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5904\" src=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-1-300x228.png\" alt=\"\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06cc\u0631\u0648\u062f\u06cc\u0646\u0627\u0645\u06cc\u06a9: \u0645\u062f\u0644 \u062c\u062a \u0646\u0648\u06cc\u0632\" width=\"710\" height=\"541\" srcset=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-1-300x228.png 300w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-1-768x585.png 768w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-1-355x270.png 355w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-1-600x457.png 600w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-1.png 851w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5905\" src=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-2-300x216.png\" alt=\"\" width=\"710\" height=\"511\" srcset=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-2-300x216.png 300w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-2-768x553.png 768w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-2-360x259.png 360w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-2-600x432.png 600w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/jet-noise-2.png 863w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0631\u0627\u0628\u0637\u0647 (28) \u0628\u06cc\u0627\u0646\u06af\u0631 \u0628\u06cc\u0627\u0646 \u062a\u0648\u0627\u0646 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u062f\u0631 \u0648\u0627\u062d\u062f \u062f\u0633\u06cc \u0628\u0644 (dB) \u0645\u06cc\u200c\u0628\u0627\u0634\u062f.<\/span><\/p>\n<h6 style=\"text-align: right;\"><span style=\"color: #339966;\"><em><strong>\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9:<\/strong><\/em><\/span><\/h6>\n<h4 style=\"text-align: right;\"><span style=\"color: #ff0000;\"><strong>\u0645\u0646\u0627\u0628\u0639 \u0646\u0648\u06cc\u0632 \u0644\u0627\u06cc\u0647 \u0645\u0631\u0632\u06cc (The Boundary Layer Noise Source Model)<\/strong><\/span><\/h4>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0635\u062f\u0627\u06cc \u062f\u0648\u0631 \u062f\u0633\u062a \u062a\u0648\u0644\u06cc\u062f \u0634\u062f\u0647 \u062a\u0648\u0633\u0637 \u062c\u0631\u06cc\u0627\u0646 \u0644\u0627\u06cc\u0647 \u0645\u0631\u0632\u06cc \u0631\u0648\u06cc \u06cc\u06a9 \u0628\u062f\u0646\u0647 \u062c\u0627\u0645\u062f \u062f\u0631 \u0627\u0639\u062f\u0627 \u0645\u0627\u062e \u067e\u0627\u06cc\u06cc\u0646 \u0627\u063a\u0644\u0628 \u06cc\u06a9\u06cc \u0627\u0632 \u0645\u0648\u0636\u0648\u0639\u0627\u062a \u0645\u0648\u0631\u062f \u0639\u0644\u0627\u0642\u0647 \u062f\u0631 \u0645\u0628\u0627\u062d\u062b \u062a\u062c\u0631\u0628\u06cc \u0627\u0633\u062a. \u0627\u0646\u062a\u06af\u0631\u0627\u0644 \u06a9\u0631\u0644 (Curle) \u0645\u0628\u062a\u0646\u06cc \u0628\u0631 \u0642\u06cc\u0627\u0633 \u0627\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0628\u0631\u0627\u06cc \u062a\u062e\u0645\u06cc\u0646 \u0633\u0647\u0645 \u0645\u0648\u0636\u0639\u06cc \u0627\u0632 \u0633\u0637\u062d \u0628\u062f\u0646\u0647 \u0628\u0647 \u062a\u0648\u0627\u0646 \u06a9\u0644 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9\u060c \u0645\u0648\u0631\u062f \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0642\u0631\u0627\u0631 \u06af\u06cc\u0631\u062f. \u0627\u0646\u062a\u06af\u0631\u0627\u0644 \u06a9\u0631\u0644 \u0637\u0628\u0642 \u0645\u0639\u0627\u062f\u0644\u0647 (29) \u062d\u0633\u0627\u0628 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0645\u0639\u0627\u062f\u0644\u0647 (29) \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0634\u062f\u062a \u0635\u0648\u062a \u062f\u0631 \u062f\u0648\u0631 \u062f\u0633\u062a \u0631\u0627 \u0637\u0628\u0642 \u0631\u0627\u0628\u0637\u0647 (30) \u062a\u062e\u0645\u06cc\u0646 \u0632\u062f. \u062a\u0648\u0627\u0646 \u06a9\u0644 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0633\u0627\u062a\u0639 \u0634\u062f\u0647 \u0627\u0632 \u0633\u0637\u062d \u06a9\u0644 \u062c\u0633\u0645 \u0646\u06cc\u0632 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0645\u0639\u0627\u062f\u0644\u0627\u062a (31) \u0648 (32) \u0645\u062d\u0627\u0633\u0628\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0645\u0639\u0627\u062f\u0644\u0647 (32) \u0628\u0647 \u0647\u0631 \u062f\u0648 \u0635\u0648\u0631\u062a \u0627\u0628\u0639\u0627\u062f\u06cc (W\/M<sup>3<\/sup>) \u0648 dB \u0642\u0627\u0628\u0644 \u06af\u0632\u0627\u0631\u0634 \u0627\u0633\u062a.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5913\" src=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/BL-noise-1-300x211.png\" alt=\"\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9: \u0645\u0646\u0628\u0639 \u0646\u0648\u06cc\u0632 \u0644\u0627\u06cc\u0647 \u0645\u0631\u0632\u06cc\" width=\"710\" height=\"500\" srcset=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/BL-noise-1-300x211.png 300w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/BL-noise-1-768x541.png 768w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/BL-noise-1-360x253.png 360w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/BL-noise-1-600x422.png 600w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/BL-noise-1.png 872w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/p>\n<h6 style=\"text-align: right;\"><span style=\"color: #339966;\"><em><strong>\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9:<\/strong><\/em><\/span><\/h6>\n<h4 style=\"text-align: right;\"><strong><span style=\"color: #ff0000;\">\u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 \u062f\u0631 \u0645\u0639\u0627\u062f\u0644\u0627\u062a \u0627\u0648\u06cc\u0644\u0631 \u062e\u0637\u06cc \u0634\u062f\u0647 (Linearized Euler Equations: LEE)<\/span><\/strong><\/h4>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0645\u0639\u0627\u062f\u0644\u0627\u062a \u0627\u0648\u06cc\u0644\u0631 \u062e\u0637\u06cc \u0634\u062f\u0647 (LEE) \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0627\u0632 \u0645\u0639\u0627\u062f\u0644\u0627\u062a \u0646\u0627\u0648\u06cc\u0631 \u0627\u0633\u062a\u0648\u06a9\u0633 \u0628\u062f\u0633\u062a \u0622\u06cc\u0646\u062f. \u0627\u06cc\u0646 \u0645\u0647\u0645 \u0628\u0627 \u062a\u062c\u0632\u06cc\u0647 \u0645\u062a\u063a\u06cc\u0631\u0647\u0627\u06cc \u062c\u0631\u06cc\u0627\u0646 \u0628\u0647 \u067e\u0627\u0631\u0627\u0645\u062a\u0631\u0647\u0627\u06cc \u0645\u062a\u0648\u0633\u0637\u060c \u0622\u0634\u0641\u062a\u06af\u06cc \u0648 \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0627\u0645\u06a9\u0627\u0646\u200c\u067e\u0630\u06cc\u0631 \u0627\u0633\u062a. \u0627\u0644\u0628\u062a\u0647 \u0641\u0631\u0636 \u0628\u0631 \u0627\u06cc\u0646\u0633\u062a \u06a9\u0647 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0628\u0637\u0648\u0631 \u0642\u0627\u0628\u0644 \u062a\u0648\u062c\u0647\u06cc \u06a9\u0648\u0686\u06a9\u062a\u0631 \u0627\u0632 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0645\u062a\u0648\u0633\u0637 \u0648 \u0622\u0634\u0641\u062a\u06af\u06cc \u0645\u06cc\u200c\u0628\u0627\u0634\u0646\u062f. \u062f\u0631 \u0646\u062a\u06cc\u062c\u0647 \u0645\u0639\u0627\u062f\u0644\u0647 \u0627\u0648\u06cc\u0644\u0631 \u062e\u0637\u06cc \u0634\u062f\u0647 \u0628\u0631\u0627\u06cc \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0633\u0631\u0639\u062a \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0637\u0628\u0642 \u0631\u0627\u0628\u0637\u0647 (33) \u0646\u0648\u0634\u062a\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u062f\u0631 \u0627\u06cc\u0646 \u0631\u0627\u0628\u0637\u0647 \u0632\u06cc\u0631 \u0646\u0648\u06cc\u0633 a \u0645\u0639\u0631\u0641 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0648 \u0628\u0627\u0644\u0627 \u0646\u0648\u06cc\u0633 \u067e\u0631\u06cc\u0645 (\u2018) \u0646\u06cc\u0632 \u0645\u0639\u0631\u0641 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0622\u0634\u0641\u062a\u06af\u06cc \u0647\u0633\u062a\u0646\u062f. \u062a\u0631\u0645 \u0633\u0645\u062a \u0631\u0627\u0633\u062a \u0645\u0639\u0627\u062f\u0644\u0647 (33) \u0631\u0627 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 \u0645\u0624\u062b\u0631 \u062a\u0648\u0644\u06cc\u062f \u0646\u0648\u06cc\u0632 \u062f\u0631 \u0646\u0638\u0631 \u06af\u0631\u0641\u062a. \u0637\u0628\u0642 \u0627\u06cc\u0646 \u062a\u0631\u0645\u200c\u0647\u0627 \u0633\u0647 \u062a\u0631\u0645 \u0627\u0648\u0644 \u062f\u0631\u06af\u06cc\u0631 \u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0622\u0634\u0641\u062a\u06af\u06cc \u0628\u0648\u062f\u0647 \u0648 \u0628\u06cc\u0634\u062a\u0631\u06cc\u0646 \u0633\u0647\u0645 \u0631\u0627 \u0628\u062e\u0648\u062f \u0627\u062e\u062a\u0635\u0627\u0635 \u0645\u06cc\u200c\u062f\u0647\u0646\u062f. <\/span><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u062a\u0631\u0645\u200c\u0647\u0627\u06cc L<sub>sh<\/sub> \u0627\u063a\u0644\u0628 \u0628\u0647 \u0645\u0646\u0627\u0628\u0639 \u0646\u0648\u06cc\u0632 \u0628\u0631\u0634\u06cc (Shear-Noise) \u062f\u0644\u0627\u0644\u062a \u062f\u0627\u0631\u0646\u062f \u0686\u0631\u0627\u06a9\u0647 \u062f\u0631\u06af\u06cc\u0631 \u0628\u0631\u0634 \u0645\u06cc\u0627\u0646\u06af\u06cc\u0646 \u0647\u0633\u062a\u0646\u062f. \u062a\u0631\u0645 L<sub>se<\/sub> \u06a9\u0647 \u062a\u0646\u0647\u0627 \u0628\u0627 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0633\u0631\u0639\u062a \u0622\u0634\u0641\u062a\u0647 \u0633\u0631\u0648\u06a9\u0627\u0631 \u062f\u0627\u0631\u062f \u0646\u06cc\u0632 \u0627\u063a\u0644\u0628 \u0645\u0646\u0628\u0639 \u0646\u0648\u06cc\u0632 \u062e\u0648\u062f\u0633\u0631 (Self-Noise) \u0646\u0627\u0645\u06cc\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f. \u0645\u06cc\u062f\u0627\u0646 \u0633\u0631\u0639\u062a \u0622\u0634\u0641\u062a\u0647 \u0645\u0648\u0631\u062f \u0646\u06cc\u0627\u0632 \u0628\u0631\u0627\u06cc \u0645\u062d\u0627\u0633\u0628\u0647 \u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 LEE \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0631\u0648\u0634 \u062a\u0648\u0644\u06cc\u062f \u062a\u0635\u0627\u062f\u0641\u06cc \u0648 \u062a\u0627\u0628\u0634\u06cc (Stochastic Noise Generation and Radiation) \u0628\u062f\u0633\u062a \u0645\u06cc\u200c\u0622\u06cc\u062f. \u00a0\u062f\u0631 \u0627\u06cc\u0646 \u0631\u0648\u0634 \u0645\u06cc\u062f\u0627\u0646 \u0633\u0631\u0639\u062a \u0622\u0634\u0641\u062a\u0647 \u0648 \u0645\u0634\u062a\u0642\u0627\u062a \u0622\u0646 \u0627\u0632 \u0645\u062c\u0645\u0648\u0639\u0647 N \u0645\u0648\u062f \u0641\u0648\u0631\u06cc\u0647 \u0628\u062f\u0633\u062a \u0645\u06cc\u200c\u0622\u06cc\u062f (\u0645\u0639\u0627\u062f\u0644\u0647 34).<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5919\" src=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/LEE-noise-1-300x107.png\" alt=\"\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9: \u0645\u062f\u0644 LEE\" width=\"710\" height=\"254\" srcset=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/LEE-noise-1-300x107.png 300w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/LEE-noise-1-768x275.png 768w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/LEE-noise-1-360x129.png 360w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/LEE-noise-1-600x215.png 600w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/LEE-noise-1.png 854w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0628\u0627\u06cc\u062f \u062a\u0648\u062c\u0647 \u062f\u0627\u0634\u062a \u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 \u062f\u0631 LEE \u0645\u0642\u0627\u062f\u06cc\u0631 \u0628\u0631\u062f\u0627\u0631\u06cc \u0628\u0648\u062f\u0647 \u0648 \u0628\u0633\u062a\u0647 \u0628\u0647 \u0627\u0628\u0639\u0627\u062f \u0645\u0633\u0626\u0644\u0647 \u062f\u0627\u0631\u0627\u06cc \u062f\u0648 \u06cc\u0627 \u0633\u0647 \u0645\u0624\u0644\u0641\u0647 \u0645\u06cc\u200c\u0628\u0627\u0634\u062f. <\/span><\/p>\n<h6 style=\"text-align: right;\"><span style=\"color: #339966;\"><em><strong>\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9:<\/strong><\/em><\/span><\/h6>\n<h4 style=\"text-align: right;\"><span style=\"color: #ff0000;\"><strong>\u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 \u0646\u0648\u06cc\u0632 \u062f\u0631 \u0645\u0639\u0627\u062f\u0644\u0647 \u0644\u0627\u06cc\u0644\u06cc (Lilley)<\/strong><\/span><\/h4>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u0645\u0639\u0627\u062f\u0644\u0647 \u0644\u0627\u06cc\u0644\u06cc \u06cc\u06a9 \u0645\u0639\u0627\u062f\u0644\u0647 \u0645\u0648\u062c \u0645\u0631\u062a\u0628\u0647 \u0633\u0648\u0645 \u0628\u0648\u062f\u0647 \u06a9\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0627\u0632 \u062a\u0631\u06a9\u06cc\u0628 \u0628\u0642\u0627\u06cc \u062c\u0631\u0645 \u0648 \u0645\u0645\u0646\u062a\u0645 \u0633\u06cc\u0627\u0644\u0627\u062a \u062a\u0631\u0627\u06a9\u0645 \u067e\u0630\u06cc\u0631 \u0628\u062f\u0633\u062a \u0622\u06cc\u062f. \u0632\u0645\u0627\u0646\u06cc\u06a9\u0647 \u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0644\u0632\u062c\u062a \u062d\u0630\u0641 \u0634\u0648\u0646\u062f \u0627\u06cc\u0646 \u0645\u0639\u0627\u062f\u0644\u0647 \u0645\u06cc\u200c\u062a\u0648\u0627\u0646\u062f \u0628\u0635\u0648\u0631\u062a \u0631\u0627\u0628\u0637\u0647 (35) \u0646\u0648\u0634\u062a\u0647 \u0634\u0648\u062f. \u0628\u0627 \u062c\u0627\u06cc\u06af\u0630\u0627\u0631\u06cc \u0645\u0639\u0627\u062f\u0644\u0647 (36) \u062f\u0631 \u062a\u0631\u0645 \u0686\u0634\u0645\u0647 \u0645\u0639\u0627\u062f\u0644\u0647 (35)\u060c \u0631\u0627\u0628\u0637\u0647 (37) \u0627\u0633\u062a\u062e\u0631\u0627\u062c \u0645\u06cc\u200c\u0634\u0648\u062f.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5926\" src=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/Lilley-noise-1-300x140.png\" alt=\"\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9: \u0645\u062f\u0644 \u0644\u0627\u06cc\u0644\u06cc\" width=\"710\" height=\"331\" srcset=\"https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/Lilley-noise-1-300x140.png 300w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/Lilley-noise-1-768x358.png 768w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/Lilley-noise-1-360x168.png 360w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/Lilley-noise-1-600x280.png 600w, https:\/\/cfd-mrk.ir\/wp-content\/uploads\/2019\/12\/Lilley-noise-1.png 854w\" sizes=\"auto, (max-width: 710px) 100vw, 710px\" \/><\/p>\n<p style=\"text-align: right;\"><span style=\"color: #000000;\">\u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 \u062a\u0648\u0644\u06cc\u062f \u0646\u0648\u06cc\u0632 \u062f\u0631 \u0645\u0639\u0627\u062f\u0644\u0647 (37) \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0645\u06cc\u062f\u0627\u0646 \u0633\u0631\u0639\u062a \u0645\u062a\u0648\u0633\u0637 \u0648\u00a0 \u0645\u0624\u0644\u0641\u0647\u200c\u0647\u0627\u06cc \u0633\u0631\u0639\u062a \u0646\u0648\u0633\u0627\u0646\u06cc \u062d\u0627\u0635\u0644 \u0627\u0632 SNGR \u0628\u062f\u0633\u062a \u0645\u06cc\u200c\u0622\u06cc\u0646\u062f. \u0647\u0645\u0686\u0648\u0646 \u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 LEE\u060c \u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0645\u0646\u0628\u0639 \u0645\u0639\u0627\u062f\u0644\u0647 (37) \u0628\u0647 \u062a\u0631\u0645\u200c\u0647\u0627\u06cc \u0646\u0648\u06cc\u0632 \u0628\u0631\u0634\u06cc \u06cc\u0627 \u0646\u0648\u06cc\u0632 \u062e\u0648\u062f\u0633\u0631 \u062f\u0633\u062a\u0647 \u0628\u0646\u062f\u06cc \u0648 \u0628\u0635\u0648\u0631\u062a \u062c\u062f\u0627\u06af\u0627\u0646\u0647 \u0642\u0627\u0628\u0644 \u06af\u0632\u0627\u0631\u0634 \u0647\u0633\u062a\u0646\u062f.<\/span><\/p>\n<p>\u00a0<\/p>\n\n\n<p style=\"font-size:18px\" class=\"has-text-color has-text-align-right has-vivid-cyan-blue-color wp-block-paragraph\"><strong><a href=\"https:\/\/cfd-mrk.ir\/index.php\/training\/flow-analysis\/fundamentals-of-cfd\/\">\u0628\u0627\u0632\u06af\u0634\u062a<\/a><\/strong><\/p>\n\n\n\n<p class=\"has-text-color has-background has-text-align-right has-medium-font-size has-vivid-red-color has-cyan-bluish-gray-background-color wp-block-paragraph\"><strong>\u0645\u0637\u0627\u0644\u0628 \u0645\u0631\u062a\u0628\u0637<\/strong><\/p>\n\n\n\n<p style=\"font-size:18px\" class=\"has-text-color has-text-align-right has-vivid-cyan-blue-color wp-block-paragraph\"><strong><a href=\"https:\/\/cfd-mrk.ir\/index.php\/about-cfd\/cfd-application\/flow-regimes-simulation\/acoustic\/\">\u0634\u0628\u06cc\u0647 \u0633\u0627\u0632\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 (\u0646\u0648\u06cc\u0632 \u0622\u0626\u0631\u0648\u062f\u06cc\u0646\u0627\u0645\u06cc\u06a9\u06cc) \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u0646\u0631\u0645 \u0627\u0641\u0632\u0627\u0631\u0647\u0627\u06cc CFD<\/a><\/strong><\/p>\n\n\n\n<p class=\"has-text-color has-text-align-left has-normal-font-size has-vivid-cyan-blue-color wp-block-paragraph\"><a href=\"https:\/\/www.onera.fr\/fr\/actualites\/propagation-acoustique-autour-dun-profil-a-trois-corps\"><strong>https:\/\/www.onera.fr\/fr\/actualites\/propagation-acoustique-autour-dun-profil-a-trois-corps<\/strong><\/a><\/p>\n\n\n\n<p class=\"has-text-color has-text-align-left has-cyan-bluish-gray-color wp-block-paragraph\"><em><a href=\"https:\/\/cfd-mrk.ir\/index.php\/contact-us\/\"><strong>\u0628\u0631\u0627\u06cc \u06a9\u0633\u0628 \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u0628\u06cc\u0634\u062a\u0631 \u0628\u0627 \u0645\u0627 \u062a\u0645\u0627\u0633 \u0628\u06af\u06cc\u0631\u06cc\u062f<\/strong><\/a><\/em><\/p>\n\n\n\n<p style=\"color:#0300a3\" class=\"has-text-color has-text-align-left wp-block-paragraph\"><strong><em>\u0645\u062d\u0645\u062f\u0631\u0636\u0627 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\u0634\u0627\u062e\u0647\u200c\u0627\u06cc \u0627\u0632&hellip;&nbsp;<a href=\"https:\/\/cfd-mrk.ir\/index.php\/training\/flow-analysis\/fundamentals-of-cfd\/acoustic-theory\/\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":5934,"parent":3477,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5851","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 - cfd-mrk<\/title>\n<meta name=\"description\" content=\"\u0645\u0628\u0627\u0646\u06cc \u062a\u0626\u0648\u0631\u06cc \u0622\u06a9\u0648\u0633\u062a\u06cc\u06a9 \u0628\u0631\u0627\u0633\u0627\u0633 \u062a\u0648\u0644\u06cc\u062f\u060c 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