{"id":716938,"date":"2024-10-09T23:35:56","date_gmt":"2024-10-09T22:35:56","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=716938"},"modified":"2024-10-09T23:35:56","modified_gmt":"2024-10-09T22:35:56","slug":"%e7%83%ad%e5%af%bc%e7%8e%87%e5%a6%82%e4%bd%95%e5%bd%b1%e5%93%8d%e7%83%ad%e6%b5%81","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/zh-hans\/%e7%83%ad%e5%af%bc%e7%8e%87%e5%a6%82%e4%bd%95%e5%bd%b1%e5%93%8d%e7%83%ad%e6%b5%81\/","title":{"rendered":"\u70ed\u5bfc\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u6d41"},"content":{"rendered":"<p class=\"sidekick\">\u70ed\u5bfc\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u6d41\uff1a\u4e86\u89e3\u70ed\u5bfc\u7387\u7684\u5b9a\u4e49\u3001\u5f71\u54cd\u56e0\u7d20\uff0c\u4ee5\u53ca\u5b83\u5728\u5bfc\u70ed\u8fc7\u7a0b\u4e2d\u7684\u4f5c\u7528\uff0c\u5e2e\u52a9\u60a8\u638c\u63e1\u70ed\u6d41\u7ba1\u7406\u7684\u57fa\u7840\u77e5\u8bc6\u3002<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/\u70ed\u5bfc\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u6d41.png\" alt=\"\u70ed\u5bfc\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u6d41\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u70ed\u5bfc\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u6d41<\/h2>\n<p>\u70ed\u5bfc\u7387\uff08thermal conductivity\uff09\u662f\u6750\u6599\u4f20\u5bfc\u70ed\u91cf\u80fd\u529b\u7684\u5ea6\u91cf\uff0c\u5b83\u5728\u70ed\u6d41\u4f20\u9012\u4e2d\u8d77\u7740\u5173\u952e\u4f5c\u7528\u3002\u4e86\u89e3\u70ed\u5bfc\u7387\u548c\u70ed\u6d41\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u5bf9\u4e8e\u70ed\u5de5\u7a0b\u548c\u65e5\u5e38\u751f\u6d3b\u4e2d\u70ed\u7ba1\u7406\u6280\u672f\u7684\u5e94\u7528\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h2>\u70ed\u5bfc\u7387\u7684\u5b9a\u4e49<\/h2>\n<p>\u70ed\u5bfc\u7387\u4ee5 \u03bb \u6216 k \u8868\u793a\uff0c\u5355\u4f4d\u4e3a\u74e6\u6bcf\u7c73\u6bcf\u5f00\u5c14\u6587\uff08W\/m\u00b7K\uff09\u3002\u5b83\u8868\u793a\u5728\u6052\u5b9a\u72b6\u6001\u4e0b\uff0c\u5355\u4f4d\u9762\u79ef\u7684\u6750\u6599\u5728\u5355\u4f4d\u65f6\u95f4\u5185\u6cbf\u6307\u5b9a\u65b9\u5411\u4f20\u5bfc\u7684\u70ed\u91cf\uff0c\u5f53\u6e29\u5ea6\u68af\u5ea6\u4e3a 1 K\/m \u65f6\u3002\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p>\nq = -k \\frac{dT}{dx}\n<\/p>\n<ul>\n<li><strong>q:<\/strong> \u70ed\u6d41\u5bc6\u5ea6\uff0c\u5355\u4f4d W\/m\u00b2<\/li>\n<li><strong>k:<\/strong> \u70ed\u5bfc\u7387<\/li>\n<li><strong>\\(\\frac{dT}{dx}\\):<\/strong> \u6e29\u5ea6\u68af\u5ea6<\/li>\n<\/ul>\n<h2>\u70ed\u6d41\u7684\u5b9a\u4e49<\/h2>\n<p>\u70ed\u6d41\u662f\u6307\u70ed\u80fd\u4ece\u9ad8\u6e29\u533a\u57df\u4f20\u9012\u5230\u4f4e\u6e29\u533a\u57df\u7684\u8fc7\u7a0b\u3002\u5728\u7a33\u6001\u4f20\u70ed\u4e2d\uff0c\u70ed\u6d41\u5bc6\u5ea6 q \u8868\u793a\u4e3a\u5355\u4f4d\u9762\u79ef\u4e0a\u7684\u70ed\u6d41\u91cf\uff0c\u901a\u5e38\u5355\u4f4d\u4e3a W\/m\u00b2\u3002<\/p>\n<h2>\u70ed\u5bfc\u7387\u5bf9\u70ed\u6d41\u7684\u5f71\u54cd<\/h2>\n<p>1. \u70ed\u5bfc\u7387\u9ad8\u7684\u6750\u6599\uff0c\u4f8b\u5982\u94dc\u548c\u94f6\uff0c\u80fd\u591f\u5feb\u901f\u3001\u9ad8\u6548\u5730\u4f20\u5bfc\u70ed\u91cf\u3002\u8fd9\u4e9b\u6750\u6599\u5728\u5e94\u7528\u4e2d\uff0c\u6bd4\u5982\u7535\u7f06\u3001\u7535\u7ebf\u3001\u6563\u70ed\u5668\u4e2d\uff0c\u90fd\u662f\u7406\u60f3\u7684\u9009\u62e9\u3002<\/p>\n<p>2. \u70ed\u5bfc\u7387\u4f4e\u7684\u6750\u6599\uff0c\u4f8b\u5982\u6728\u6750\u548c\u7a7a\u6c14\uff0c\u4f20\u5bfc\u70ed\u91cf\u7684\u6548\u7387\u4f4e\u3002\u8fd9\u4e9b\u6750\u6599\u5e38\u7528\u4f5c\u9694\u70ed\u6750\u6599\uff0c\u7528\u4e8e\u5efa\u7b51\u3001\u51b0\u7bb1\u7b49\u9700\u8981\u9632\u6b62\u70ed\u91cf\u4f20\u9012\u7684\u573a\u5408\u3002<\/p>\n<h3>\u5085\u91cc\u53f6\u5b9a\u5f8b<\/h3>\n<p>\u5085\u91cc\u53f6\u5b9a\u5f8b\uff08Fourier&#8217;s Law\uff09\u63cf\u8ff0\u4e86\u7a33\u6001\u70ed\u4f20\u5bfc\u4e2d\u7684\u70ed\u6d41\u5bc6\u5ea6\u4e0e\u6e29\u5ea6\u68af\u5ea6\u4e4b\u95f4\u7684\u5173\u7cfb\uff1a<\/p>\n<p>\nq = -k \\frac{dT}{dx}\n<\/p>\n<p>\u4ece\u8fd9\u4e2a\u516c\u5f0f\u53ef\u4ee5\u770b\u51fa\uff0c\u70ed\u5bfc\u7387\u8d8a\u9ad8\uff0c\u7ed9\u5b9a\u6e29\u5ea6\u68af\u5ea6\u4e0b\uff0c\u70ed\u6d41\u5bc6\u5ea6\u5c31\u8d8a\u5927\u3002\u56e0\u6b64\uff0c\u9ad8\u70ed\u5bfc\u7387\u6750\u6599\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u70ed\u4f20\u8f93\u6548\u7387\u3002<\/p>\n<h2>\u5b9e\u9645\u5e94\u7528<\/h2>\n<ol>\n<li><strong>\u7535\u5b50\u8bbe\u5907\uff1a<\/strong>\u9ad8\u5bfc\u70ed\u6750\u6599\u7528\u4e8e\u6563\u70ed\u7247\u548c\u5bfc\u70ed\u818f\u4ee5\u6563\u53d1\u70ed\u91cf\uff0c\u4fdd\u6301\u7535\u5b50\u5143\u4ef6\u7684\u7a33\u5b9a\u8fd0\u884c\u3002<\/li>\n<li><strong>\u5efa\u7b51\uff1a<\/strong>\u4f4e\u70ed\u5bfc\u7387\u6750\u6599\u7528\u4e8e\u5899\u4f53\u548c\u5c4b\u9876\u7684\u7edd\u70ed\u5c42\uff0c\u4ee5\u51cf\u5c11\u80fd\u91cf\u635f\u8017\uff0c\u4e3a\u5ba4\u5185\u63d0\u4f9b\u8212\u9002\u7684\u6e29\u5ea6\u3002<\/li>\n<li><strong>\u5de5\u4e1a\u5236\u9020\uff1a<\/strong>\u9ad8\u5bfc\u70ed\u6750\u6599\u5728\u8bb8\u591a\u5236\u9020\u8fc7\u7a0b\u4e2d\u7528\u4f5c\u6a21\u5177\u548c\u70ed\u4ea4\u6362\u5668\uff0c\u4ee5\u63d0\u9ad8\u751f\u4ea7\u6548\u7387\u3002<\/li>\n<\/ol>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u70ed\u5bfc\u7387\u662f\u70ed\u5de5\u7a0b\u4e2d\u7684\u4e00\u4e2a\u57fa\u672c\u6982\u5ff5\uff0c\u5b83\u663e\u8457\u5f71\u54cd\u70ed\u6d41\u4f20\u9012\u3002\u7406\u89e3\u70ed\u5bfc\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u6d41\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u8bbe\u8ba1\u548c\u9009\u62e9\u5408\u9002\u7684\u6750\u6599\u4ee5\u4f18\u5316\u70ed\u7ba1\u7406\uff0c\u65e0\u8bba\u662f\u5728\u65e5\u5e38\u751f\u6d3b\u8fd8\u662f\u5728\u5de5\u4e1a\u5e94\u7528\u4e2d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u70ed\u5bfc\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u6d41\uff1a\u4e86\u89e3\u70ed\u5bfc\u7387\u7684\u5b9a\u4e49\u3001\u5f71\u54cd\u56e0\u7d20\uff0c\u4ee5\u53ca\u5b83\u5728\u5bfc\u70ed\u8fc7\u7a0b\u4e2d\u7684\u4f5c\u7528\uff0c\u5e2e\u52a9\u60a8\u638c\u63e1\u70ed\u6d41\u7ba1\u7406\u7684\u57fa\u7840\u77e5\u8bc6\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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