{"id":740332,"date":"2024-09-20T01:17:22","date_gmt":"2024-09-20T00:17:22","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=740332"},"modified":"2024-09-20T01:17:22","modified_gmt":"2024-09-20T00:17:22","slug":"%e5%be%ae%e5%8f%8d%e5%ba%94%e5%99%a8%e4%b8%ad%e7%9a%84%e6%b5%81%e4%bd%93%e5%8a%a8%e5%8a%9b%e5%ad%a6","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/zh-hans\/%e5%be%ae%e5%8f%8d%e5%ba%94%e5%99%a8%e4%b8%ad%e7%9a%84%e6%b5%81%e4%bd%93%e5%8a%a8%e5%8a%9b%e5%ad%a6\/","title":{"rendered":"\u5fae\u53cd\u5e94\u5668\u4e2d\u7684\u6d41\u4f53\u52a8\u529b\u5b66"},"content":{"rendered":"<p class=\"sidekick\">\u5fae\u53cd\u5e94\u5668\u4e2d\u7684\u6d41\u4f53\u52a8\u529b\u5b66\uff1a\u6df1\u5165\u89e3\u6790\u5fae\u53cd\u5e94\u5668\u5185\u6d41\u4f53\u7684\u884c\u4e3a\u3001\u7279\u6027\u53ca\u5e94\u7528\uff0c\u63ed\u793a\u5176\u5728\u70ed\u5de5\u7a0b\u4e2d\u7684\u91cd\u8981\u4f5c\u7528\u548c\u524d\u6cbf\u7814\u7a76\u3002<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/\u5fae\u53cd\u5e94\u5668\u4e2d\u7684\u6d41\u4f53\u52a8\u529b\u5b66.png\" alt=\"\u5fae\u53cd\u5e94\u5668\u4e2d\u7684\u6d41\u4f53\u52a8\u529b\u5b66\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u5fae\u53cd\u5e94\u5668\u4e2d\u7684\u6d41\u4f53\u52a8\u529b\u5b66<\/h2>\n<p>\u5fae\u53cd\u5e94\u5668\u662f\u4e00\u79cd\u4e3b\u8981\u7528\u4e8e\u5316\u5b66\u53cd\u5e94\u7684\u8bbe\u5907\uff0c\u5176\u7279\u70b9\u662f\u5177\u6709\u5fae\u7c73\u7ea7\u5c3a\u5bf8\u7684\u901a\u9053\u3002\u7531\u4e8e\u5176\u9ad8\u8868\u9762\u79ef-\u4f53\u79ef\u6bd4\u548c\u826f\u597d\u7684\u4f20\u70ed\u6027\u80fd\uff0c\u5fae\u53cd\u5e94\u5668\u8d8a\u6765\u8d8a\u53d7\u5230\u79d1\u7814\u548c\u5de5\u4e1a\u754c\u7684\u5173\u6ce8\u3002\u5176\u4e2d\uff0c\u6d41\u4f53\u52a8\u529b\u5b66\u5728\u5fae\u53cd\u5e94\u5668\u7684\u8bbe\u8ba1\u548c\u4f18\u5316\u4e2d\u8d77\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002<\/p>\n<h2>\u6d41\u4f53\u52a8\u529b\u5b66\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6d41\u4f53\u52a8\u529b\u5b66\u662f\u7814\u7a76\u6d41\u4f53\uff08\u6db2\u4f53\u548c\u6c14\u4f53\uff09\u8fd0\u52a8\u7684\u79d1\u5b66\u3002\u5728\u5fae\u53cd\u5e94\u5668\u4e2d\uff0c\u4e86\u89e3\u6d41\u4f53\u7684\u6d41\u52a8\u884c\u4e3a\u5bf9\u4e8e\u4f18\u5316\u53cd\u5e94\u6761\u4ef6\u548c\u63d0\u9ad8\u4ea7\u7387\u81f3\u5173\u91cd\u8981\u3002\u901a\u5e38\u4f7f\u7528\u7eb3\u7ef4-\u65af\u6258\u514b\u65af\u65b9\u7a0b\uff08Navier-Stokes equations\uff09\u6765\u63cf\u8ff0\u6d41\u4f53\u6d41\u52a8\uff1a<\/p>\n<p><i>\u52a8\u91cf\u65b9\u7a0b\uff1a<\/i> $$ \\rho \\left( \\frac{\\partial \\mathbf{u}}{\\partial t} + \\mathbf{u} \\cdot \\nabla \\mathbf{u} \\right) = &#8211; \\nabla p + \\mu \\nabla^2 \\mathbf{u} $$<\/p>\n<p>\u5176\u4e2d\uff0c$$ \\rho $$ \u662f\u6d41\u4f53\u5bc6\u5ea6\uff0c$$ \\mathbf{u} $$ \u662f\u901f\u5ea6\u5411\u91cf\uff0c$$ p $$ \u662f\u538b\u529b\uff0c$$ \\mu $$ \u662f\u6d41\u4f53\u7c98\u5ea6\u3002<\/p>\n<h2>\u5fae\u53cd\u5e94\u5668\u4e2d\u7684\u6d41\u52a8\u7c7b\u578b<\/h2>\n<ul>\n<li><b>\u5c42\u6d41\uff1a<\/b>\u5728\u5fae\u53cd\u5e94\u5668\u7684\u5c0f\u5c3a\u5bf8\u4e2d\uff0c\u6d41\u52a8\u901a\u5e38\u662f\u5c42\u6d41\uff0c\u610f\u5473\u7740\u6d41\u4f53\u5c42\u4e4b\u95f4\u5e73\u884c\u79fb\u52a8\uff0c\u4e0d\u53d1\u751f\u4ea4\u6df7\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u96f7\u8bfa\u6570\uff08Re<sub>D<\/sub>\uff09\u901a\u5e38\u5c0f\u4e8e2100\u3002<\/li>\n<li><b>\u6e4d\u6d41\uff1a<\/b>\u5c3d\u7ba1\u5728\u5fae\u5c3a\u5ea6\u4e0b\u8f83\u5c11\u89c1\uff0c\u6e4d\u6d41\u6d41\u52a8\u4e5f\u6709\u53ef\u80fd\u53d1\u751f\uff0c\u7279\u522b\u662f\u5728\u6d41\u4f53\u901f\u5ea6\u8f83\u9ad8\u6216\u901a\u9053\u8bbe\u8ba1\u4e0d\u89c4\u5219\u7684\u60c5\u51b5\u4e0b\u3002\u9700\u8003\u8651\u96f7\u8bfa\u6570\u5927\u4e8e4000\u7684\u60c5\u51b5\u3002<\/li>\n<\/ul>\n<p><i>\u96f7\u8bfa\u6570\uff1a<\/i> $$ Re = \\frac{\\rho u D}{\\mu} $$<\/p>\n<h2>\u70ed\u4f20\u8f93\u73b0\u8c61<\/h2>\n<p>\u5728\u53cd\u5e94\u8fc7\u7a0b\u4e2d\uff0c\u70ed\u4f20\u8f93\u662f\u4e00\u4e2a\u5173\u952e\u56e0\u7d20\u3002\u5fae\u53cd\u5e94\u5668\u7684\u5c0f\u5c3a\u5bf8\u4f7f\u5176\u5177\u6709\u8f83\u9ad8\u7684\u4f20\u70ed\u6548\u7387\u3002\u70ed\u4f20\u5bfc\u65b9\u7a0b\u5982\u4e0b\uff1a<\/p>\n<p><i>\u70ed\u4f20\u5bfc\u65b9\u7a0b\uff1a<\/i> $$ \\rho c_p \\frac{\\partial T}{\\partial t} = k \\nabla^2 T + q $$<\/p>\n<p>\u5176\u4e2d\uff0c$$ c_p $$ \u662f\u6bd4\u70ed\u5bb9\uff0c$$ T $$ \u662f\u6e29\u5ea6\uff0c$$ k $$ \u662f\u70ed\u5bfc\u7387\uff0c$$ q $$ \u662f\u5355\u4f4d\u4f53\u79ef\u5185\u7684\u70ed\u6e90\u3002<\/p>\n<h2>\u5e94\u7528\u4e0e\u4f18\u52bf<\/h2>\n<ul>\n<li>\u9ad8\u6548\u6df7\u5408\uff1a\u7531\u4e8e\u5c0f\u5c3a\u5bf8\u548c\u5927\u8868\u9762\u79ef\uff0c\u53cd\u5e94\u7269\u53ef\u4ee5\u5feb\u901f\u4e14\u5747\u5300\u5730\u6df7\u5408\u3002<\/li>\n<li>\u9ad8\u6548\u4f20\u70ed\uff1a\u5fae\u53cd\u5e94\u5668\u5177\u6709\u66f4\u9ad8\u7684\u70ed\u4f20\u9012\u901f\u7387\uff0c\u6709\u52a9\u4e8e\u5feb\u901f\u8fbe\u5230\u53cd\u5e94\u6240\u9700\u7684\u6e29\u5ea6\u6761\u4ef6\u3002<\/li>\n<li>\u5b89\u5168\u6027\uff1a\u8f83\u5c0f\u7684\u53cd\u5e94\u4f53\u79ef\u4f7f\u5f97\u8bb8\u591a\u53cd\u5e94\u8fc7\u7a0b\u66f4\u4e3a\u5b89\u5168\uff0c\u7279\u522b\u662f\u5904\u7406\u5371\u9669\u5316\u5b66\u54c1\u65f6\u3002<\/li>\n<\/ul>\n<p>\u7efc\u5408\u4ee5\u4e0a\u7279\u70b9\uff0c\u5fae\u53cd\u5e94\u5668\u5728\u5236\u836f\u3001\u5316\u5de5\u548c\u6750\u6599\u79d1\u5b66\u7b49\u9886\u57df\u5c55\u73b0\u51fa\u4e86\u5e7f\u9614\u7684\u5e94\u7528\u524d\u666f\u3002<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u5fae\u53cd\u5e94\u5668\u4e2d\u7684\u6d41\u4f53\u52a8\u529b\u5b66\u4e0d\u4ec5\u6d89\u53ca\u57fa\u672c\u7684\u6d41\u4f53\u529b\u5b66\u539f\u7406\uff0c\u66f4\u5305\u542b\u4e86\u70ed\u4f20\u5bfc\u548c\u53cd\u5e94\u52a8\u529b\u5b66\u7b49\u591a\u65b9\u9762\u7684\u5185\u5bb9\u3002\u6df1\u5165\u7406\u89e3\u6d41\u4f53\u52a8\u529b\u5b66\u5bf9\u4e8e\u8bbe\u8ba1\u9ad8\u6548\u4e14\u5b89\u5168\u7684\u5fae\u53cd\u5e94\u5668\u81f3\u5173\u91cd\u8981\u3002\u8fd9\u4ea6\u5f70\u663e\u4e86\u70ed\u5de5\u7a0b\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u5de8\u5927\u4ef7\u503c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5fae\u53cd\u5e94\u5668\u4e2d\u7684\u6d41\u4f53\u52a8\u529b\u5b66\uff1a\u6df1\u5165\u89e3\u6790\u5fae\u53cd\u5e94\u5668\u5185\u6d41\u4f53\u7684\u884c\u4e3a\u3001\u7279\u6027\u53ca\u5e94\u7528\uff0c\u63ed\u793a\u5176\u5728\u70ed\u5de5\u7a0b\u4e2d\u7684\u91cd\u8981\u4f5c\u7528\u548c\u524d\u6cbf\u7814\u7a76\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[134],"tags":[],"yoast_head":"<!-- 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