{"id":743235,"date":"2024-08-12T14:28:55","date_gmt":"2024-08-12T13:28:55","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=743235"},"modified":"2024-08-12T14:28:55","modified_gmt":"2024-08-12T13:28:55","slug":"%e5%a4%9a%e7%9b%b8%e6%b5%81%e4%b8%ad%e7%9a%84%e7%83%ad%e4%bc%a0%e9%80%92%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/zh-hans\/%e5%a4%9a%e7%9b%b8%e6%b5%81%e4%b8%ad%e7%9a%84%e7%83%ad%e4%bc%a0%e9%80%92%e8%a7%a3%e6%9e%90\/","title":{"rendered":"\u591a\u76f8\u6d41\u4e2d\u7684\u70ed\u4f20\u9012\u89e3\u6790"},"content":{"rendered":"<p 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\/>\n<u>\u4e00\u7ef4\u5bfc\u70ed\u65b9\u7a0b\uff1a<\/u> \\( Q = -k \\frac{dT}{dx} \\)<br \/>\n\u5176\u4e2d\uff0c<br \/>\n  \\( Q \\)\uff1a\u70ed\u6d41\u91cf<br \/>\n  \\( k \\)\uff1a\u5bfc\u70ed\u7cfb\u6570<br \/>\n  \\( \\frac{dT}{dx} \\) : \u6e29\u5ea6\u68af\u5ea6\n<\/p>\n<p>\u4f20\u70ed\u65b9\u7a0b\uff08\u80fd\u91cf\u5b88\u6052\u65b9\u7a0b\uff09\uff1a<br \/>\n\\[ \\frac{\\partial}{\\partial t}(\\rho c_p T) + \\nabla \\cdot (\\rho \\mathbf{u} c_p T) = \\nabla \\cdot (k \\nabla T) + S \\]\n\u5176\u4e2d\uff0c<\/p>\n<ul>\n<li>\\(\\rho\\)\uff1a\u5bc6\u5ea6<\/li>\n<li>\\(c_p\\)\uff1a\u6bd4\u70ed\u5bb9<\/li>\n<li>\\(T\\)\uff1a\u6e29\u5ea6<\/li>\n<li>\\(\\mathbf{u}\\)\uff1a\u901f\u5ea6\u573a<\/li>\n<li>\\(S\\)\uff1a\u4f53\u79ef\u70ed\u6e90<\/li>\n<\/ul>\n<h2>\u6570\u503c\u6a21\u62df\u65b9\u6cd5<\/h2>\n<p>\u7531\u4e8e\u591a\u76f8\u6d41\u4e2d\u7684\u70ed\u4f20\u9012\u95ee\u9898\u9ad8\u5ea6\u975e\u7ebf\u6027\uff0c\u89e3\u6790\u89e3\u901a\u5e38\u96be\u4ee5\u83b7\u5f97\u3002\u56e0\u6b64\uff0c\u6570\u503c\u6a21\u62df\u65b9\u6cd5\uff08\u5982\u6709\u9650\u5143\u6cd5\u3001\u6709\u9650\u5dee\u5206\u6cd5\u548c\u6709\u9650\u4f53\u79ef\u6cd5\uff09\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u7814\u7a76\u8fd9\u7c7b\u95ee\u9898\u3002<\/p>\n<ul>\n<li><u>\u6709\u9650\u5143\u6cd5<\/u>\uff1a\u5c06\u8fde\u7eed\u4f53\u5212\u5206\u4e3a\u591a\u4e2a\u6709\u9650\u5143\u7d20\uff0c\u901a\u8fc7\u6c42\u89e3\u6bcf\u4e2a\u5143\u7d20\u4e0a\u7684\u8fd1\u4f3c\u65b9\u7a0b\u6765\u83b7\u5f97\u6574\u4f53\u89e3\u3002<\/li>\n<li><u>\u6709\u9650\u5dee\u5206\u6cd5<\/u>\uff1a\u5728\u7a7a\u95f4\u548c\u65f6\u95f4\u4e0a\u5212\u5206\u79bb\u6563\u70b9\uff0c\u901a\u8fc7\u5dee\u5206\u65b9\u7a0b\u6765\u903c\u8fd1\u5bfc\u6570\u3002<\/li>\n<li><u>\u6709\u9650\u4f53\u79ef\u6cd5<\/u>\uff1a\u5c06\u8ba1\u7b97\u533a\u57df\u5212\u5206\u4e3a\u591a\u4e2a\u6709\u9650\u4f53\u79ef\uff0c\u901a\u8fc7\u5b88\u6052\u65b9\u7a0b\u7684\u79ef\u5206\u5f62\u5f0f\u6765\u6c42\u89e3\u3002<\/li>\n<\/ul>\n<h2>\u5e94\u7528\u9886\u57df<\/h2>\n<p>\u591a\u76f8\u6d41\u4e2d\u7684\u70ed\u4f20\u9012\u89e3\u6790\u5728\u8bb8\u591a\u5de5\u7a0b\u9886\u57df\u5177\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u77f3\u6cb9\u548c\u5929\u7136\u6c14\u5de5\u4e1a\uff1a\u5728\u6cb9\u6c14\u5f00\u91c7\u548c\u8fd0\u8f93\u8fc7\u7a0b\u4e2d\u5bf9\u591a\u76f8\u6d41\u52a8\u548c\u70ed\u4f20\u9012\u8fdb\u884c\u5efa\u6a21\u548c\u4f18\u5316\u3002<\/li>\n<li>\u5316\u5de5\u8fc7\u7a0b\uff1a\u5728\u5316\u5b66\u53cd\u5e94\u5668\u548c\u5206\u79bb\u8bbe\u5907\u4e2d\u7814\u7a76\u591a\u76f8\u6d41\u70ed\u4f20\u9012\uff0c\u4ee5\u63d0\u9ad8\u6548\u7387\u548c\u5b89\u5168\u6027\u3002<\/li>\n<li>\u51b6\u91d1\u5de5\u7a0b\uff1a\u5728\u9ad8\u6e29\u91d1\u5c5e\u52a0\u5de5\u4e2d\uff0c\u5bf9\u6c14\u56fa\u591a\u76f8\u6d41\u4e2d\u7684\u70ed\u4f20\u9012\u8fdb\u884c\u7814\u7a76\u3002<\/li>\n<\/ul>\n<p>\u603b\u7684\u6765\u8bf4\uff0c\u591a\u76f8\u6d41\u4e2d\u7684\u70ed\u4f20\u9012\u89e3\u6790\u662f\u4e00\u95e8\u6d89\u53ca\u591a\u4e2a\u5b66\u79d1\u548c\u9886\u57df\u7684\u590d\u6742\u8bfe\u9898\u3002\u968f\u7740\u8ba1\u7b97\u6280\u672f\u548c\u5b9e\u9a8c\u6280\u672f\u7684\u8fdb\u6b65\uff0c\u4eba\u4eec\u53ef\u4ee5\u66f4\u6df1\u5165\u5730\u7406\u89e3\u548c\u4f18\u5316\u591a\u76f8\u6d41\u52a8\u4e2d\u7684\u70ed\u4f20\u9012\u8fc7\u7a0b\uff0c\u4ece\u800c\u63a8\u52a8\u76f8\u5173\u5de5\u4e1a\u548c\u6280\u672f\u7684\u4e0d\u65ad\u53d1\u5c55\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u591a\u76f8\u6d41\u4e2d\u7684\u70ed\u4f20\u9012\u89e3\u6790\uff1a\u6df1\u5165\u7814\u7a76\u591a\u79cd\u76f8\u6001\uff08\u5305\u62ec\u6db2\u4f53\u3001\u6c14\u4f53\u548c\u56fa\u4f53\uff09\u4e4b\u95f4\u7684\u70ed\u4ea4\u6362\u673a\u5236\uff0c\u63ed\u793a\u5176\u5728\u5de5\u7a0b\u5e94\u7528\u4e2d\u7684\u91cd\u8981\u6027\u4e0e\u5b9e\u9645\u64cd\u4f5c\u65b9\u6cd5\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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