{"id":695241,"date":"2024-11-29T22:28:23","date_gmt":"2024-11-29T21:28:23","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=695241"},"modified":"2024-11-29T22:28:23","modified_gmt":"2024-11-29T21:28:23","slug":"ung-dung-ly-thuyet-lop-bien","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/ung-dung-ly-thuyet-lop-bien\/","title":{"rendered":"\u1ee8ng d\u1ee5ng l\u00fd thuy\u1ebft l\u1edbp bi\u00ean"},"content":{"rendered":"<p class=\"sidekick\">L\u00fd thuy\u1ebft l\u1edbp bi\u00ean trong k\u1ef9 thu\u1eadt nhi\u1ec7t m\u00f4 t\u1ea3 c\u00e1ch th\u1ee9c nhi\u1ec7t v\u00e0 ch\u1ea5t l\u01b0u t\u01b0\u01a1ng t\u00e1c v\u1edbi b\u1ec1 m\u1eb7t, \u1ee9ng d\u1ee5ng trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t v\u00e0 trao \u0111\u1ed5i nhi\u1ec7t.<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/ung_dung_ly_thuyet_lop_bien.png\" alt=\"\u1ee8ng d\u1ee5ng l\u00fd thuy\u1ebft l\u1edbp bi\u00ean\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u1ee8ng d\u1ee5ng l\u00fd thuy\u1ebft l\u1edbp bi\u00ean trong k\u1ef9 thu\u1eadt nhi\u1ec7t<\/h2>\n<p>L\u00fd thuy\u1ebft l\u1edbp bi\u00ean l\u00e0 m\u1ed9t kh\u00eda c\u1ea1nh quan tr\u1ecdng trong l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt nhi\u1ec7t, gi\u00fap hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 d\u00f2ng ch\u1ea3y v\u00e0 truy\u1ec1n nhi\u1ec7t g\u1ea7n b\u1ec1 m\u1eb7t r\u1eafn. L\u00fd thuy\u1ebft n\u00e0y gi\u00fap c\u00e1c k\u1ef9 s\u01b0 t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t cao v\u00e0 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng.<\/p>\n<h2>L\u1edbp bi\u00ean l\u00e0 g\u00ec?<\/h2>\n<p>L\u1edbp bi\u00ean l\u00e0 v\u00f9ng m\u00e0 trong \u0111\u00f3 c\u00e1c hi\u1ec7u \u1ee9ng nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng ho\u1eb7c kh\u00ed tr\u1edf n\u00ean \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c hi\u1ec7u \u1ee9ng kh\u00e1c. N\u00f3i c\u00e1ch kh\u00e1c, trong l\u1edbp bi\u00ean, \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t l\u1ecfng hay kh\u00ed \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn d\u00f2ng ch\u1ea3y. L\u1edbp bi\u00ean th\u01b0\u1eddng r\u1ea5t m\u1ecfng so v\u1edbi k\u00edch th\u01b0\u1edbc c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng ch\u00ednh nh\u01b0ng l\u1ea1i \u0111\u00f3ng vai tr\u00f2 quy\u1ebft \u0111\u1ecbnh \u0111\u1ebfn hi\u1ec7u qu\u1ea3 truy\u1ec1n nhi\u1ec7t v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng.<\/p>\n<h2>Ph\u00e2n lo\u1ea1i l\u1edbp bi\u00ean<\/h2>\n<p><u1><\/p>\n<li><b>L\u1edbp bi\u00ean \u0111\u1ed9ng l\u1ef1c h\u1ecdc:<\/b> \u0110\u1eb7c tr\u01b0ng b\u1edfi s\u1ef1 gi\u1ea3m t\u1ed1c \u0111\u1ed9 d\u00f2ng ch\u1ea3y s\u00e1t b\u1ec1 m\u1eb7t so v\u1edbi d\u00f2ng ch\u00ednh.<\/li>\n<li><b>L\u1edbp bi\u00ean nhi\u1ec7t:<\/b> \u0110\u1eb7c tr\u01b0ng b\u1edfi s\u1ef1 bi\u1ebfn \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 t\u1eeb b\u1ec1 m\u1eb7t ra ngo\u00e0i m\u00f4i tr\u01b0\u1eddng xung quanh.<\/li>\n<p><\/u1><\/p>\n<h2>C\u00e1c ph\u01b0\u01a1ng tr\u00ecnh li\u00ean quan<\/h2>\n<p>\u0110\u1ec3 m\u00f4 t\u1ea3 s\u1ef1 thay \u0111\u1ed5i trong l\u1edbp bi\u00ean, ch\u00fang ta s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh c\u01a1 b\u1ea3n, \u0111i\u1ec3n h\u00ecnh l\u00e0:<\/p>\n<ul>\n<li>Ph\u01b0\u01a1ng tr\u00ecnh \u0111\u1ed9ng l\u01b0\u1ee3ng (Navier-Stokes): \\( \\frac{\\partial u}{\\partial t} + u \\frac{\\partial u}{\\partial x} = -\\frac{1}{\\rho} \\frac{\\partial p}{\\partial x} + \\nu \\frac{\\partial^2 u}{\\partial y^2} \\)<\/li>\n<li>Ph\u01b0\u01a1ng tr\u00ecnh n\u0103ng l\u01b0\u1ee3ng: \\( \\frac{\\partial T}{\\partial t} + u \\frac{\\partial T}{\\partial x} = \\alpha \\frac{\\partial^2 T}{\\partial y^2} \\)<\/li>\n<\/ul>\n<h2>\u1ee8ng d\u1ee5ng trong k\u1ef9 thu\u1eadt nhi\u1ec7t<\/h2>\n<ul>\n<li><b>Thi\u1ebft k\u1ebf b\u1ed9 trao \u0111\u1ed5i nhi\u1ec7t:<\/b> L\u00fd thuy\u1ebft l\u1edbp bi\u00ean gi\u00fap d\u1ef1 \u0111o\u00e1n s\u1ef1 truy\u1ec1n nhi\u1ec7t gi\u1eefa c\u00e1c b\u1ec1 m\u1eb7t c\u0169ng nh\u01b0 hi\u1ec7u su\u1ea5t trao \u0111\u1ed5i nhi\u1ec7t.<\/li>\n<li><b>C\u00f4ng nghi\u1ec7p \u00f4 t\u00f4:<\/b> Hi\u1ec3u r\u00f5 v\u1ec1 l\u1edbp bi\u00ean gi\u00fap t\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t \u0111\u1ed9ng c\u01a1 v\u00e0 gi\u1ea3m l\u1ef1c c\u1ea3n kh\u00f4ng kh\u00ed.<\/li>\n<li><b>K\u1ef9 thu\u1eadt h\u00e0ng kh\u00f4ng:<\/b> L\u1edbp bi\u00ean \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn l\u1ef1c c\u1ea3n v\u00e0 s\u1ef1 truy\u1ec1n nhi\u1ec7t tr\u00ean c\u00e1nh m\u00e1y bay, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t nhi\u00ean li\u1ec7u.<\/li>\n<li><b>K\u1ef9 thu\u1eadt n\u0103ng l\u01b0\u1ee3ng:<\/b> Ki\u1ebfn th\u1ee9c v\u1ec1 l\u1edbp bi\u00ean gi\u00fap t\u1ed1i \u01b0u h\u00f3a c\u00e1c th\u00e0nh ph\u1ea7n trong tua-bin gi\u00f3 v\u00e0 h\u1ec7 th\u1ed1ng quang \u0111i\u1ec7n.<\/li>\n<\/ul>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>L\u00fd thuy\u1ebft l\u1edbp bi\u00ean l\u00e0 c\u00f4ng c\u1ee5 h\u1eefu \u00edch v\u00e0 c\u1ea7n thi\u1ebft trong k\u1ef9 thu\u1eadt nhi\u1ec7t. Hi\u1ec3u r\u00f5 v\u00e0 \u00e1p d\u1ee5ng l\u00fd thuy\u1ebft n\u00e0y gi\u00fap c\u00e1c k\u1ef9 s\u01b0 thi\u1ebft k\u1ebf c\u00e1c h\u1ec7 th\u1ed1ng hi\u1ec7u qu\u1ea3 h\u01a1n, gi\u1ea3m chi ph\u00ed v\u1eadn h\u00e0nh v\u00e0 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u00fd thuy\u1ebft l\u1edbp bi\u00ean trong k\u1ef9 thu\u1eadt nhi\u1ec7t m\u00f4 t\u1ea3 c\u00e1ch th\u1ee9c nhi\u1ec7t v\u00e0 ch\u1ea5t l\u01b0u t\u01b0\u01a1ng t\u00e1c v\u1edbi b\u1ec1 m\u1eb7t, \u1ee9ng d\u1ee5ng trong thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t v\u00e0 trao \u0111\u1ed5i nhi\u1ec7t.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v15.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u1ee8ng d\u1ee5ng 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