{"id":339120,"date":"2024-06-19T22:33:44","date_gmt":"2024-06-19T21:33:44","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/%ec%9c%a0%ec%b2%b4-%ec%97%ad%ed%95%99%ec%97%90%ec%84%9c-%ea%b2%bd%ea%b3%84%ec%b8%b5%ec%9d%98-5%ea%b0%80%ec%a7%80-%ec%9c%a0%ed%98%95\/"},"modified":"2024-06-19T22:33:44","modified_gmt":"2024-06-19T21:33:44","slug":"%ec%9c%a0%ec%b2%b4-%ec%97%ad%ed%95%99%ec%97%90%ec%84%9c-%ea%b2%bd%ea%b3%84%ec%b8%b5%ec%9d%98-5%ea%b0%80%ec%a7%80-%ec%9c%a0%ed%98%95","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/ko\/%ec%9c%a0%ec%b2%b4-%ec%97%ad%ed%95%99%ec%97%90%ec%84%9c-%ea%b2%bd%ea%b3%84%ec%b8%b5%ec%9d%98-5%ea%b0%80%ec%a7%80-%ec%9c%a0%ed%98%95\/","title":{"rendered":"\uc720\uccb4 \uc5ed\ud559\uc5d0\uc11c \uacbd\uacc4\uce35\uc758 5\uac00\uc9c0 \uc720\ud615"},"content":{"rendered":"

\uc720\uccb4 \uc5ed\ud559\uc5d0\uc11c \uacbd\uacc4\uce35\uc758 5\uac00\uc9c0 \uc720\ud615\uacfc \uac01 \uc720\ud615\uc758 \ud2b9\uc131 \ubc0f \uc218\uc2dd \uc124\uba85. \uc720\uccb4 \ud750\ub984 \ubd84\uc11d\uacfc \uc124\uacc4\uc5d0 \uc911\uc694\ud55c \uce35\ub958, \ub09c\ub958, \uc774\uc0c1, \uc5f4, \ud3b8\ubaa8 \uacbd\uacc4\uce35.<\/p>\n

\"\uc720\uccb4<\/p>\n

\uc720\uccb4 \uc5ed\ud559\uc5d0\uc11c \uacbd\uacc4\uce35\uc758 5\uac00\uc9c0 \uc720\ud615<\/h2>\n

\uc720\uccb4 \uc5ed\ud559\uc5d0\uc11c \uacbd\uacc4\uce35(boundary layer)\uc774\ub780 \uc720\uccb4\uac00 \ubb3c\uccb4\uc758 \ud45c\uba74\uc744 \uc9c0\ub098\uba74\uc11c \ub290\ub07c\ub294 \uc810\uc131\uc758 \ud6a8\uacfc\ub85c \uc778\ud574 \ud615\uc131\ub418\ub294 \uc587\uc740 \uce35\uc744 \ub9d0\ud569\ub2c8\ub2e4. \uacbd\uacc4\uce35\uc758 \ud2b9\uc131\uc744 \uc774\ud574\ud558\ub294 \uac83\uc740 \uc720\uccb4\uc758 \ud750\ub984\uc744 \ubd84\uc11d\ud558\uace0 \uc124\uacc4\ud558\ub294 \ub370 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. \uacbd\uacc4\uce35\uc740 \ub2e4\uc591\ud55c \ud615\ud0dc\ub85c \ub098\ud0c0\ub0a0 \uc218 \uc788\uc73c\uba70, \uc8fc\ub85c \ub2e4\uc74c\uc758 \ub2e4\uc12f \uac00\uc9c0 \uc720\ud615\uc73c\ub85c \ubd84\ub958\ub429\ub2c8\ub2e4.<\/p>\n

<\/p>\n

  • \uce35\ub958 \uacbd\uacc4\uce35<\/li>\n
  • \ub09c\ub958 \uacbd\uacc4\uce35<\/li>\n
  • \uc774\uc0c1 \uacbd\uacc4\uce35<\/li>\n
  • \uc5f4 \uacbd\uacc4\uce35<\/li>\n
  • \ud3b8\ubaa8 \uacbd\uacc4\uce35<\/li>\n

    <\/u1><\/p>\n

    \uce35\ub958 \uacbd\uacc4\uce35 (Laminar Boundary Layer)<\/h3>\n

    \uce35\ub958 \uacbd\uacc4\uce35\uc740 \uc720\uccb4\uac00 \uaddc\uce59\uc801\uc774\uace0 \ub9e4\ub044\ub7fd\uac8c \ud750\ub974\ub294 \uacbd\uc6b0\ub97c \ub9d0\ud569\ub2c8\ub2e4. \uc774 \uc0c1\ud0dc\uc5d0\uc11c\ub294 \uc720\uccb4 \uc785\uc790\uac00 \uce35\uc744 \uc774\ub8e8\uba70 \uc774\ub3d9\ud558\uba70 \uc11c\ub85c \uc11e\uc774\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uce35\ub958 \uacbd\uacc4\uce35\uc758 \ub450\uaed8\ub294 \uc0c1\ub300\uc801\uc73c\ub85c \uc587\uc73c\uba70, \uc18d\ub3c4 \ubd84\ud3ec\ub294 \uc720\uccb4\uc758 \uc810\uc131, \ubc00\ub3c4 \ubc0f \uc720\ub3d9 \uc18d\ub3c4\uc5d0 \ud06c\uac8c \uc758\uc874\ud569\ub2c8\ub2e4. \uc774\ub97c \uc218\uc2dd\uc73c\ub85c \ud45c\ud604\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n

    u(y) = U \\left( \\frac{y}{\\delta} \\right)<\/i><\/p>\n

    \ub09c\ub958 \uacbd\uacc4\uce35 (Turbulent Boundary Layer)<\/h3>\n

    \ub09c\ub958 \uacbd\uacc4\uce35\uc740 \uc720\uccb4\uac00 \ubd88\uaddc\uce59\ud558\uace0 \ubb34\uc791\uc704\uc801\uc73c\ub85c \ud750\ub974\ub294 \uacbd\uc6b0\ub97c \ub9d0\ud569\ub2c8\ub2e4. \uc774 \uc0c1\ud0dc\uc5d0\uc11c\ub294 \uc720\uccb4 \uc785\uc790\uac00 \uc11c\ub85c \uc11e\uc774\uba70, \ub9e4\uc6b0 \ubcf5\uc7a1\ud55c \uc18d\ub3c4 \ubd84\ud3ec\ub97c \uac00\uc9d1\ub2c8\ub2e4. \ub09c\ub958 \uc0c1\ud0dc\uc5d0\uc11c\ub294 \uc5d0\ub108\uc9c0 \uc190\uc2e4\uc774 \ub9ce\uace0, \uce35\ub958\uc5d0 \ube44\ud574 \ub450\uaebc\uc6b4 \uacbd\uacc4\uce35\uc744 \ud615\uc131\ud569\ub2c8\ub2e4. \ub09c\ub958 \uacbd\uacc4\uce35\uc758 \ud2b9\uc9d5\uc73c\ub85c\ub294 \uc544\ub798\uc640 \uac19\uc740 \uc18d\ub3c4 \ubd84\ud3ec \ubc29\uc815\uc2dd\uc744 \ub4e4 \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n

    u(y) \u2248 U \\left( \\frac{y}{\\delta} \\right)^{1\/7}<\/i><\/p>\n

    \uc774\uc0c1 \uacbd\uacc4\uce35 (Displacement Boundary Layer)<\/h3>\n

    \uc774\uc0c1 \uacbd\uacc4\uce35\uc740 \uacbd\uacc4\uce35 \ub0b4\ubd80\uc758 \uc720\uccb4\uac00 \uc2e4\uc81c\ub85c\ub294 \uc774\ub3d9\ud558\uc9c0 \uc54a\uc9c0\ub9cc, \uc720\uccb4\uc758 \ud750\ub984\uc774 \uacbd\uacc4\uce35\uc5d0 \uc758\ud574 \ubcc0\ud615\ub418\uc5b4 \ub9c8\uce58 \uc720\uccb4\uac00 \ubc30\ucd9c\ub41c \uac83\ucc98\ub7fc \ubcf4\uc774\ub294 \uacbd\uc6b0\ub97c \ub9d0\ud569\ub2c8\ub2e4. \uc774\uac83\uc740 \uc8fc\ub85c \uc555\ub825 \uae30\uc6b8\uae30\ub098 \uc678\ubd80 \ud798\uc5d0 \uc758\ud574 \ubc1c\uc0dd\ud558\uba70, \uc720\uccb4 \ud750\ub984\uc5d0 \ud070 \uc601\ud5a5\uc744 \ubbf8\uce60 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

    \uc5f4 \uacbd\uacc4\uce35 (Thermal Boundary Layer)<\/h3>\n

    \uc5f4 \uacbd\uacc4\uce35\uc740 \uc628\ub3c4 \ucc28\ub85c \uc778\ud574 \ubc1c\uc0dd\ud558\ub294 \uacbd\uacc4\uce35\uc785\ub2c8\ub2e4. \uc5f4 \uacbd\uacc4\uce35\uc758 \ub450\uaed8\ub294 \uc5f4\uc804\ub3c4\uc728, \uc720\uccb4\uc758 \uc18d\ub3c4, \uadf8\ub9ac\uace0 \uc810\uc131\uc5d0 \ub530\ub77c \uacb0\uc815\ub429\ub2c8\ub2e4. \uc5f4\uc758 \uc804\ub2ec\uc740 \uc8fc\ub85c \uc804\ub3c4\uc640 \ub300\ub958\ub85c \uc774\ub8e8\uc5b4\uc9c0\uba70, \uc628\ub3c4 \ubd84\ud3ec \ubc29\uc815\uc2dd\uc740 \ub2e4\uc74c\uacfc \uac19\uc774 \ub098\ud0c0\ub0bc \uc218 \uc788\uc2b5\ub2c8\ub2e4:<\/p>\n

    \\frac{dT}{dy} = \\frac{q}{k}<\/i><\/p>\n

    \ud3b8\ubaa8 \uacbd\uacc4\uce35 (Momentum Boundary Layer)<\/h3>\n

    \ud3b8\ubaa8 \uacbd\uacc4\uce35\uc740 \uc720\uccb4\uc758 \uc6b4\ub3d9\ub7c9\uc774 \ubcc0\ud654\ud558\ub294 \uacbd\uacc4\uce35\uc785\ub2c8\ub2e4. \ud3b8\ubaa8 \uacbd\uacc4\uce35\uc740 \uc8fc\ub85c \ubb3c\uccb4 \ud45c\uba74\uc5d0 \ub300\ud574 \uc0c1\ub300\uc801\uc778 \uc720\uccb4\uc758 \uc6b4\ub3d9\uc5d0 \uc758\ud574 \ubc1c\uc0dd\ud558\uba70, \ubb3c\uccb4 \ud45c\uba74\uc5d0\uc11c \uc720\uccb4\uc758 \uc18d\ub3c4\uac00 \uc601(0)\uc774 \ub418\ub294 \ud604\uc0c1\uc774 \ub098\ud0c0\ub0a9\ub2c8\ub2e4.<\/p>\n

    \uc720\uccb4 \uc5ed\ud559\uc5d0\uc11c \uacbd\uacc4\uce35\uc758 \ub2e4\uc591\ud55c \uc720\ud615\uc744 \uc774\ud574\ud558\ub294 \uac83\uc740 \uc720\ub3d9 \ud604\uc0c1\uc744 \ubd84\uc11d\ud558\uace0 \uc608\uce21\ud558\ub294 \ub370 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4. \uac01 \uc720\ud615\uc758 \uacbd\uacc4\uce35\uc740 \ud2b9\uc815\ud55c \uc870\uac74\uacfc \uc0c1\ud669\uc5d0 \ub530\ub77c \ud615\uc131\ub418\uba70, \uc774\ub97c \uc774\ud574\ud568\uc73c\ub85c\uc368 \uc2e4\uc81c \uacf5\ud559\uc801 \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uace0 \ucd5c\uc801\uc758 \uc124\uacc4\ub97c \ud560 \uc218 \uc788\uac8c \ub429\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"

    \uc720\uccb4 \uc5ed\ud559\uc5d0\uc11c \uacbd\uacc4\uce35\uc758 5\uac00\uc9c0 \uc720\ud615\uacfc \uac01 \uc720\ud615\uc758 \ud2b9\uc131 \ubc0f \uc218\uc2dd \uc124\uba85. \uc720\uccb4 \ud750\ub984 \ubd84\uc11d\uacfc \uc124\uacc4\uc5d0 \uc911\uc694\ud55c \uce35\ub958, \ub09c\ub958, \uc774\uc0c1, \uc5f4, \ud3b8\ubaa8 \uacbd\uacc4\uce35.<\/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":"\n\uc720\uccb4 \uc5ed\ud559\uc5d0\uc11c \uacbd\uacc4\uce35\uc758 5\uac00\uc9c0 \uc720\ud615<\/title>\n<meta name=\"description\" content=\"\uc720\uccb4 \uc5ed\ud559\uc5d0\uc11c \uacbd\uacc4\uce35\uc758 5\uac00\uc9c0 \uc720\ud615\uacfc \uac01 \uc720\ud615\uc758 \ud2b9\uc131 \ubc0f \uc218\uc2dd \uc124\uba85. \uc720\uccb4 \ud750\ub984 \ubd84\uc11d\uacfc \uc124\uacc4\uc5d0 \uc911\uc694\ud55c \uce35\ub958, \ub09c\ub958, \uc774\uc0c1, \uc5f4, \ud3b8\ubaa8 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