{"id":370776,"date":"2024-06-23T10:06:17","date_gmt":"2024-06-23T09:06:17","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/%ec%9c%a0%ec%b2%b4-%ec%97%ad%ed%95%99-%ed%95%ad%eb%a0%a5-%ec%9d%b4%ed%95%b4%ed%95%98%ea%b8%b0\/"},"modified":"2024-06-23T10:06:17","modified_gmt":"2024-06-23T09:06:17","slug":"%ec%9c%a0%ec%b2%b4-%ec%97%ad%ed%95%99-%ed%95%ad%eb%a0%a5-%ec%9d%b4%ed%95%b4%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/ko\/%ec%9c%a0%ec%b2%b4-%ec%97%ad%ed%95%99-%ed%95%ad%eb%a0%a5-%ec%9d%b4%ed%95%b4%ed%95%98%ea%b8%b0\/","title":{"rendered":"\uc720\uccb4 \uc5ed\ud559: \ud56d\ub825 \uc774\ud574\ud558\uae30"},"content":{"rendered":"<p class=\"sidekick\">\uc720\uccb4 \uc5ed\ud559\uc5d0\uc11c \ud56d\ub825 \uc774\ud574\ud558\uae30: \ud56d\ub825\uc740 \uc720\uccb4\uac00 \ubb3c\uccb4\ub97c \ud1b5\uacfc\ud560 \ub54c \ubc1c\uc0dd\ud558\ub294 \uc800\ud56d\ub825\uc73c\ub85c \uc124\uacc4, \uc790\ub3d9\ucc28, \ud56d\uacf5\uae30 \ub4f1 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/06\/\uc720\uccb4_\uc5ed\ud559_\ud56d\ub825_\uc774\ud574\ud558\uae30.png\" alt=\"\uc720\uccb4 \uc5ed\ud559: \ud56d\ub825 \uc774\ud574\ud558\uae30\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\uc720\uccb4 \uc5ed\ud559: \ud56d\ub825 \uc774\ud574\ud558\uae30<\/h2>\n<p>\uc720\uccb4 \uc5ed\ud559\uc740 \uc720\uccb4(\uc561\uccb4\uc640 \uae30\uccb4)\uc758 \uc6b4\ub3d9\uacfc \ud798\uc744 \uc5f0\uad6c\ud558\ub294 \ud559\ubb38\uc785\ub2c8\ub2e4. \uc774 \uc911\uc5d0\uc11c\ub3c4 \ud56d\ub825\uc740 \uc720\uccb4\uac00 \ubb3c\uccb4\ub97c \ud1b5\uacfc\ud560 \ub54c \ubb3c\uccb4\uc5d0 \uac00\ud574\uc9c0\ub294 \uc800\ud56d\ub825\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \ud56d\ub825\uc740 \uad6c\uc870\ubb3c\uc758 \uc124\uacc4, \uc790\ub3d9\ucc28 \uacf5\uae30\uc5ed\ud559, \ud56d\uacf5\uae30 \ube44\ud589 \ub4f1\uc758 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0\uc11c \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n<h2>\ud56d\ub825\uc758 \uc815\uc758<\/h2>\n<p>\ud56d\ub825(drag)\uc740 \ubb3c\uccb4\uac00 \uc720\uccb4\ub97c \ud1b5\uacfc\ud560 \ub54c \ubc1c\uc0dd\ud558\ub294 \uc800\ud56d\ub825\uc785\ub2c8\ub2e4. \ud56d\ub825\uc740 \ub450 \uac00\uc9c0 \uc8fc\uc694 \uad6c\uc131 \uc694\uc18c\ub85c \ub098\ub20c \uc218 \uc788\uc2b5\ub2c8\ub2e4: \uc720\uccb4 \ub9c8\ucc30 \ud56d\ub825\uacfc \uc555\ub825 \ud56d\ub825.<\/p>\n<ul>\n<li><strong>\uc720\uccb4 \ub9c8\ucc30 \ud56d\ub825 (Skin friction drag)<\/strong>: \uc720\uccb4\uac00 \ubb3c\uccb4 \ud45c\uba74\uc744 \ub530\ub77c \ud750\ub97c \ub54c \ubc1c\uc0dd\ud558\ub294 \ub9c8\ucc30\ub85c \uc778\ud574 \ubc1c\uc0dd\ud558\ub294 \ud56d\ub825\uc785\ub2c8\ub2e4.<\/li>\n<li><strong>\uc555\ub825 \ud56d\ub825 (Pressure drag)<\/strong>: \ubb3c\uccb4\uac00 \uc720\uccb4\ub97c \ud1b5\uacfc\ud560 \ub54c \ubb3c\uccb4 \uc804\uba74\uacfc \ud6c4\uba74\uc758 \uc555\ub825 \ucc28\uc774\ub85c \uc778\ud574 \ubc1c\uc0dd\ud558\ub294 \ud56d\ub825\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<h2>\ud56d\ub825 \uacf5\uc2dd<\/h2>\n<p>\ud56d\ub825\uc740 \ub2e4\uc74c\uacfc \uac19\uc740 \uae30\ubcf8 \uacf5\uc2dd\uc744 \ud1b5\ud574 \uacc4\uc0b0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n<p>\n  <em>D = c_d * \\(\\frac{1}{2}\\) * \\(\\rho\\) * Vsup2 * A<\/em>\n<\/p>\n<ul>\n<li><strong>D<\/strong>: \ud56d\ub825 (Drag Force)<\/li>\n<li><strong>c_d<\/strong>: \ud56d\ub825 \uacc4\uc218 (Drag Coefficient), \ubb3c\uccb4\uc758 \ubaa8\uc591\uacfc \ud45c\uba74 \uc0c1\ud0dc\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c0\ub294 \ubcc0\uc218\uc785\ub2c8\ub2e4.<\/li>\n<li><strong>\\(\\rho\\)<\/strong>: \uc720\uccb4\uc758 \ubc00\ub3c4 (Fluid Density)<\/li>\n<li><strong>V<\/strong>: \uc720\uccb4\uc758 \uc18d\ub3c4 (Fluid Velocity)<\/li>\n<li><strong>A<\/strong>: \ubb3c\uccb4\uc758 \ub2e8\uba74\uc801 (Cross-sectional Area)<\/li>\n<\/ul>\n<p>\ud56d\ub825 \uacc4\uc218 c_d\ub294 \ubb3c\uccb4\uc758 \ubaa8\uc591, \ud45c\uba74 \uac70\uce60\uae30, \uc720\uccb4\uc758 \ud2b9\uc131\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub9e4\ub044\ub7ec\uc6b4 \ubb3c\uccb4\ub294 \uc0c1\ub300\uc801\uc73c\ub85c \ub0ae\uc740 \ud56d\ub825 \uacc4\uc218\ub97c \uac00\uc9c0\uba70, \uac70\uce5c \ud45c\uba74\uc758 \ubb3c\uccb4\ub294 \ub354 \ub192\uc740 \ud56d\ub825 \uacc4\uc218\ub97c \uac00\uc9c8 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>\ud56d\ub825\uc758 \uc885\ub958<\/h2>\n<p>\ud56d\ub825\uc740 \uc5ec\ub7ec \uac00\uc9c0 \ud615\ud0dc\ub85c \ub098\ud0c0\ub0a0 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n<ol>\n<li><strong>\ud615\uc0c1 \ud56d\ub825 (Form Drag)<\/strong>: \ubb3c\uccb4\uc758 \ud615\ud0dc\uc640 \uad00\ub828\ub41c \ud56d\ub825\uc785\ub2c8\ub2e4. \ubaa8\uc591\uc774 \ubcf5\uc7a1\ud560\uc218\ub85d \ud56d\ub825\uc774 \ub354 \ucee4\uc9d1\ub2c8\ub2e4.<\/li>\n<li><strong>\ud750\ub984 \ubcc0\ud654 \ud56d\ub825 (Wake Drag)<\/strong>: \ubb3c\uccb4\uac00 \uc720\uccb4\ub97c \ud1b5\uacfc\ud55c \ud6c4 \uc0dd\uc131\ub41c \ub09c\ub958\ub85c \uc778\ud574 \ubc1c\uc0dd\ud558\ub294 \ud56d\ub825\uc785\ub2c8\ub2e4.<\/li>\n<li><strong>\uc720\ub3c4 \ud56d\ub825 (Induced Drag)<\/strong>: \uc8fc\ub85c \ud56d\uacf5\uae30 \ub0a0\uac1c\uc5d0\uc11c \ubc1c\uc0dd\ud558\uba70, \uc591\ub825\uc744 \uc0dd\uc131\ud560 \ub54c \uc0dd\uae30\ub294 \ubd80\uac00\uc801\uc778 \ud56d\ub825\uc785\ub2c8\ub2e4.<\/li>\n<\/ol>\n<h2>\ud56d\ub825 \uac10\uc18c \ubc29\ubc95<\/h2>\n<p>\ud56d\ub825\uc744 \uc904\uc774\ub294 \ubc29\ubc95\uc740 \uc5ec\ub7ec \uac00\uc9c0\uac00 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n<ul>\n<li><strong>\uc720\uccb4 \uc5ed\ud559\uc801 \uc124\uacc4<\/strong>: \ubb3c\uccb4\uc758 \ud615\uc0c1\uc744 \uc720\uccb4\uac00 \ubd80\ub4dc\ub7fd\uac8c \ud750\ub97c \uc218 \uc788\ub3c4\ub85d \ucd5c\uc801\ud654\ud558\uc5ec \ud56d\ub825\uc744 \uc904\uc785\ub2c8\ub2e4.<\/li>\n<li><strong>\ud45c\uba74 \ucc98\ub9ac<\/strong>: \ubb3c\uccb4 \ud45c\uba74\uc744 \ub9e4\ub044\ub7fd\uac8c \ud558\uc5ec \uc720\uccb4 \ub9c8\ucc30 \ud56d\ub825\uc744 \uc904\uc785\ub2c8\ub2e4.<\/li>\n<li><strong>\uc18d\ub3c4 \uc870\uc808<\/strong>: \uc720\uccb4\uc758 \uc18d\ub3c4\ub97c \uc801\uc808\ud558\uac8c \uc870\uc808\ud558\uc5ec \ud56d\ub825\uc744 \uc904\uc774\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<\/li>\n<\/ul>\n<p>\ud56d\ub825 \uc774\ud574\ub294 \ub2e4\uc591\ud55c \uacf5\ud559\uc801 \uc751\uc6a9\uc5d0\uc11c \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \ub354\uc6b1 \ud6a8\uc728\uc801\uc778 \ucc28\ub7c9, \ud56d\uacf5\uae30, \uc120\ubc15 \uc124\uacc4\ub97c \ud1b5\ud574 \uc5d0\ub108\uc9c0 \uc18c\ube44\ub97c \uc904\uc774\uace0, \uae30\uc220 \ubc1c\uc804\uc5d0 \uc911\uc694\ud55c \uae30\uc5ec\ub97c \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uc720\uccb4 \uc5ed\ud559\uc5d0\uc11c \ud56d\ub825 \uc774\ud574\ud558\uae30: \ud56d\ub825\uc740 \uc720\uccb4\uac00 \ubb3c\uccb4\ub97c \ud1b5\uacfc\ud560 \ub54c \ubc1c\uc0dd\ud558\ub294 \uc800\ud56d\ub825\uc73c\ub85c \uc124\uacc4, \uc790\ub3d9\ucc28, \ud56d\uacf5\uae30 \ub4f1 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[124],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\uc720\uccb4 \uc5ed\ud559: \ud56d\ub825 \uc774\ud574\ud558\uae30<\/title>\n<meta name=\"description\" content=\"\uc720\uccb4 \uc5ed\ud559\uc5d0\uc11c \ud56d\ub825 \uc774\ud574\ud558\uae30: \ud56d\ub825\uc740 \uc720\uccb4\uac00 \ubb3c\uccb4\ub97c \ud1b5\uacfc\ud560 \ub54c \ubc1c\uc0dd\ud558\ub294 \uc800\ud56d\ub825\uc73c\ub85c \uc124\uacc4, \uc790\ub3d9\ucc28, \ud56d\uacf5\uae30 \ub4f1 \ub2e4\uc591\ud55c \ubd84\uc57c\uc5d0 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