{"id":719745,"date":"2024-10-19T20:19:59","date_gmt":"2024-10-19T19:19:59","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=719745"},"modified":"2024-10-19T20:19:59","modified_gmt":"2024-10-19T19:19:59","slug":"%e7%83%ad%e6%b5%81%e4%bd%93%e7%b3%bb%e7%bb%9f%e5%a6%82%e4%bd%95%e4%bc%a0%e9%80%92%e7%83%ad%e9%87%8f","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/zh-hans\/%e7%83%ad%e6%b5%81%e4%bd%93%e7%b3%bb%e7%bb%9f%e5%a6%82%e4%bd%95%e4%bc%a0%e9%80%92%e7%83%ad%e9%87%8f\/","title":{"rendered":"\u70ed\u6d41\u4f53\u7cfb\u7edf\u5982\u4f55\u4f20\u9012\u70ed\u91cf"},"content":{"rendered":"<p class=\"sidekick\">\u70ed\u6d41\u4f53\u7cfb\u7edf\u5982\u4f55\u4f20\u9012\u70ed\u91cf\uff1f\u672c\u6587\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u70ed\u6d41\u4f53\u5728\u70ed\u4ea4\u6362\u8fc7\u7a0b\u4e2d\u70ed\u91cf\u4f20\u9012\u7684\u57fa\u672c\u539f\u7406\u53ca\u5b9e\u9645\u5e94\u7528\uff0c\u8ba9\u70ed\u5de5\u7a0b\u53d8\u5f97\u5bb9\u6613\u7406\u89e3\u3002<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/\u70ed\u6d41\u4f53\u7cfb\u7edf\u5982\u4f55\u4f20\u9012\u70ed\u91cf.png\" alt=\"\u70ed\u6d41\u4f53\u7cfb\u7edf\u5982\u4f55\u4f20\u9012\u70ed\u91cf\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u70ed\u6d41\u4f53\u7cfb\u7edf\u5982\u4f55\u4f20\u9012\u70ed\u91cf<\/h2>\n<p>\u70ed\u6d41\u4f53\u7cfb\u7edf\u5728\u8bb8\u591a\u5de5\u4e1a\u548c\u5bb6\u7528\u5e94\u7528\u4e2d\u8d77\u7740\u91cd\u8981\u4f5c\u7528\u3002\u70ed\u91cf\u4f20\u9012\u5728\u8fd9\u4e9b\u7cfb\u7edf\u4e2d\u81f3\u5173\u91cd\u8981\uff0c\u901a\u5e38\u901a\u8fc7\u4e09\u79cd\u4e3b\u8981\u65b9\u5f0f\u8fdb\u884c\uff1a\u4f20\u5bfc\u3001\u5bf9\u6d41\u548c\u8f90\u5c04\u3002<\/p>\n<h2>\u70ed\u91cf\u4f20\u9012\u7684\u4e09\u79cd\u65b9\u5f0f<\/h2>\n<ul>\n<li>\u4f20\u5bfc<\/li>\n<li>\u5bf9\u6d41<\/li>\n<li>\u8f90\u5c04<\/li>\n<\/ul>\n<h3>\u4f20\u5bfc<\/h3>\n<p>\u4f20\u5bfc\u662f\u70ed\u91cf\u901a\u8fc7\u7269\u8d28\u7684\u76f4\u63a5\u63a5\u89e6\u4ece\u9ad8\u6e29\u533a\u57df\u4f20\u9012\u5230\u4f4e\u6e29\u533a\u57df\u7684\u8fc7\u7a0b\u3002\u5728\u70ed\u6d41\u4f53\u7cfb\u7edf\u4e2d\uff0c\u7ba1\u9053\u548c\u5bfc\u70ed\u6750\u6599\u7528\u4e8e\u4f20\u9012\u70ed\u91cf\u3002\u4f20\u5bfc\u901a\u8fc7\u6750\u6599\u4e2d\u7684\u5206\u5b50\u548c\u539f\u5b50\u7684\u632f\u52a8\u6765\u5b9e\u73b0\u3002\u4f20\u5bfc\u70ed\u91cf\u7684\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<p>q = -k \\frac{dT}{dx}<\/p>\n<p>\u5176\u4e2d\uff0c<\/p>\n<ul>\n<li>q \u662f\u70ed\u6d41\u91cf<\/li>\n<li>k \u662f\u5bfc\u70ed\u7cfb\u6570<\/li>\n<li>dT\/dx \u662f\u6e29\u5ea6\u68af\u5ea6<\/li>\n<\/ul>\n<h3>\u5bf9\u6d41<\/h3>\n<p>\u5bf9\u6d41\u662f\u901a\u8fc7\u6d41\u4f53\u8fd0\u52a8\u4f20\u9012\u70ed\u91cf\u7684\u8fc7\u7a0b\uff0c\u5206\u4e3a\u81ea\u7136\u5bf9\u6d41\u548c\u5f3a\u5236\u5bf9\u6d41\u3002\u81ea\u7136\u5bf9\u6d41\u662f\u7531\u4e8e\u5bc6\u5ea6\u5dee\u5f02\u5f15\u8d77\u7684\u6d41\u52a8\uff0c\u800c\u5f3a\u5236\u5bf9\u6d41\u662f\u901a\u8fc7\u5916\u529b\uff08\u5982\u6cf5\u6216\u98ce\u6247\uff09\u63a8\u52a8\u6d41\u4f53\u6d41\u52a8\u3002<\/p>\n<p>\u5bf9\u6d41\u4f20\u70ed\u7cfb\u6570\u53ef\u4ee5\u7528\u52aa\u585e\u5c14\u7279\u6570\uff08Nu\uff09\u8868\u793a\uff0c\u52aa\u585e\u5c14\u7279\u6570\u4e0e\u96f7\u8bfa\u6570\uff08Re\uff09\u548c\u666e\u6717\u7279\u6570\uff08Pr\uff09\u6709\u5173\uff1a<\/p>\n<p>Nu = f(Re, Pr)<\/p>\n<h3>\u8f90\u5c04<\/h3>\n<p>\u8f90\u5c04\u662f\u901a\u8fc7\u7535\u78c1\u6ce2\u4f20\u9012\u70ed\u91cf\u7684\u8fc7\u7a0b\uff0c\u4e0d\u9700\u8981\u4ecb\u8d28\u3002\u70ed\u91cf\u901a\u8fc7\u7ea2\u5916\u7ebf\u4ece\u70ed\u8868\u9762\u8f90\u5c04\u5230\u51b7\u8868\u9762\u3002\u666e\u904d\u4f7f\u7528\u7684\u65af\u8482\u82ac-\u73bb\u5c14\u5179\u66fc\u5b9a\u5f8b\u7528\u4e8e\u8ba1\u7b97\u8f90\u5c04\u70ed\u91cf\uff1a<\/p>\n<p>q = \\sigma T^4<\/p>\n<p>\u5176\u4e2d\uff0c<\/p>\n<ul>\n<li>\\( \\sigma \\) \u662f\u65af\u8482\u82ac-\u73bb\u5c14\u5179\u66fc\u5e38\u6570<\/li>\n<li>T \u662f\u7edd\u5bf9\u6e29\u5ea6<\/li>\n<\/ul>\n<h2>\u70ed\u6d41\u4f53\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528<\/h2>\n<p>\u70ed\u6d41\u4f53\u7cfb\u7edf\u5728\u6696\u901a\u7a7a\u8c03\u3001\u53d1\u7535\u5382\u3001\u6c7d\u8f66\u5f15\u64ce\u7b49\u9886\u57df\u6709\u5e7f\u6cdb\u5e94\u7528\u3002\u4f8b\u5982\uff0c\u5728\u6c7d\u8f66\u5f15\u64ce\u4e2d\uff0c\u51b7\u5374\u6db2\u901a\u8fc7\u5bf9\u6d41\u5728\u5f15\u64ce\u5185\u90e8\u5faa\u73af\uff0c\u5e26\u8d70\u591a\u4f59\u7684\u70ed\u91cf\uff0c\u4ee5\u9632\u6b62\u5f15\u64ce\u8fc7\u70ed\u3002<\/p>\n<h3>\u6696\u901a\u7a7a\u8c03<\/h3>\n<p>\u5728\u6696\u901a\u7a7a\u8c03\u7cfb\u7edf\u4e2d\uff0c\u70ed\u6c34\u6216\u84b8\u6c7d\u901a\u8fc7\u7ba1\u9053\u4f20\u5bfc\u70ed\u91cf\uff0c\u52a0\u70ed\u6216\u51b7\u5374\u7a7a\u6c14\uff0c\u518d\u901a\u8fc7\u5bf9\u6d41\u5c06\u5904\u7406\u8fc7\u7684\u7a7a\u6c14\u5206\u5e03\u5230\u4e0d\u540c\u623f\u95f4\u3002<\/p>\n<h3>\u53d1\u7535\u5382<\/h3>\n<p>\u5728\u53d1\u7535\u5382\uff0c\u70ed\u6d41\u4f53\u7cfb\u7edf\u7528\u4e8e\u5c06\u71c3\u6599\u71c3\u70e7\u4ea7\u751f\u7684\u70ed\u91cf\u901a\u8fc7\u84b8\u6c7d\u4f20\u9012\u5230\u6da1\u8f6e\u673a\uff0c\u8f6c\u5316\u4e3a\u673a\u68b0\u80fd\uff0c\u6700\u7ec8\u8f6c\u5316\u4e3a\u7535\u80fd\u3002<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u4e86\u89e3\u70ed\u6d41\u4f53\u7cfb\u7edf\u4e2d\u70ed\u91cf\u4f20\u9012\u7684\u57fa\u672c\u539f\u7406\uff0c\u5bf9\u4e8e\u4f18\u5316\u8bbe\u8ba1\u548c\u63d0\u9ad8\u7cfb\u7edf\u6548\u7387\u81f3\u5173\u91cd\u8981\u3002\u901a\u8fc7\u5408\u7406\u5229\u7528\u4f20\u5bfc\u3001\u5bf9\u6d41\u548c\u8f90\u5c04\uff0c\u53ef\u4ee5\u5b9e\u73b0\u9ad8\u6548\u7684\u70ed\u91cf\u7ba1\u7406\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u70ed\u6d41\u4f53\u7cfb\u7edf\u5982\u4f55\u4f20\u9012\u70ed\u91cf\uff1f\u672c\u6587\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u70ed\u6d41\u4f53\u5728\u70ed\u4ea4\u6362\u8fc7\u7a0b\u4e2d\u70ed\u91cf\u4f20\u9012\u7684\u57fa\u672c\u539f\u7406\u53ca\u5b9e\u9645\u5e94\u7528\uff0c\u8ba9\u70ed\u5de5\u7a0b\u53d8\u5f97\u5bb9\u6613\u7406\u89e3\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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