{"id":717549,"date":"2024-09-23T05:15:12","date_gmt":"2024-09-23T04:15:12","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=717549"},"modified":"2024-09-23T05:15:12","modified_gmt":"2024-09-23T04:15:12","slug":"%e7%83%ad%e6%89%a9%e6%95%a3%e7%8e%87%e5%a6%82%e4%bd%95%e5%bd%b1%e5%93%8d%e7%83%ad%e4%bc%a0%e5%af%bc","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/zh-hans\/%e7%83%ad%e6%89%a9%e6%95%a3%e7%8e%87%e5%a6%82%e4%bd%95%e5%bd%b1%e5%93%8d%e7%83%ad%e4%bc%a0%e5%af%bc\/","title":{"rendered":"\u70ed\u6269\u6563\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u4f20\u5bfc"},"content":{"rendered":"<p class=\"sidekick\">\u70ed\u6269\u6563\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u4f20\u5bfc\uff1a\u8be6\u7ec6\u8bb2\u89e3\u70ed\u6269\u6563\u7387\u7684\u6982\u5ff5\u53ca\u5176\u5bf9\u70ed\u4f20\u5bfc\u8fc7\u7a0b\u7684\u5f71\u54cd\uff0c\u5e2e\u52a9\u7406\u89e3\u6750\u6599\u4f20\u70ed\u6027\u80fd\u53d8\u5316\u7684\u539f\u56e0\u3002<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/\u70ed\u6269\u6563\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u4f20\u5bfc.png\" alt=\"\u70ed\u6269\u6563\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u4f20\u5bfc\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u70ed\u6269\u6563\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u4f20\u5bfc<\/h2>\n<p>\u5728\u70ed\u5de5\u7a0b\u5b66\u4e2d\uff0c\u4e86\u89e3\u70ed\u6269\u6563\u7387\u5bf9\u70ed\u4f20\u5bfc\u7684\u5f71\u54cd\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u70ed\u6269\u6563\u7387\u63cf\u8ff0\u4e86\u70ed\u91cf\u5728\u7269\u8d28\u4e2d\u6563\u5e03\u7684\u901f\u5ea6\uff0c\u5bf9\u4e8e\u4f18\u5316\u70ed\u7ba1\u7406\u7cfb\u7edf\u548c\u8bbe\u8ba1\u70ed\u8bbe\u5907\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h2>\u4ec0\u4e48\u662f\u70ed\u6269\u6563\u7387\uff1f<\/h2>\n<p>\u70ed\u6269\u6563\u7387\uff08Thermal diffusivity\uff09\u8868\u793a\u6750\u6599\u4f20\u9012\u70ed\u91cf\u7684\u80fd\u529b\uff0c\u540c\u65f6\u8003\u8651\u4e86\u6750\u6599\u7684\u70ed\u5bfc\u7387\u3001\u5bc6\u5ea6\u548c\u6bd4\u70ed\u5bb9\u3002\u5b83\u7684\u5b9a\u4e49\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p><em>\u03b1 = \\(\\frac{k}{\u03c1c_p}\\)<\/em><\/p>\n<p><u1><\/p>\n<li><em>\u03b1<\/em>: \u70ed\u6269\u6563\u7387 (m<sup>2<\/sup>\/s)<\/li>\n<li><em>k<\/em>: \u70ed\u5bfc\u7387 (W\/m\u22c5K)<\/li>\n<li><em>\u03c1<\/em>: \u5bc6\u5ea6 (kg\/m<sup>3<\/sup>)<\/li>\n<li><em>c<sub>p<\/sub><\/em>: \u6bd4\u70ed\u5bb9 (J\/kg\u22c5K)<\/li>\n<p><\/u1><\/p>\n<h2>\u70ed\u6269\u6563\u7387\u5bf9\u70ed\u4f20\u5bfc\u7684\u5f71\u54cd<\/h2>\n<p>\u70ed\u6269\u6563\u7387\u76f4\u63a5\u5f71\u54cd\u70ed\u4f20\u5bfc\uff0c\u56e0\u4e3a\u5b83\u63cf\u8ff0\u4e86\u70ed\u80fd\u5728\u6750\u6599\u4e2d\u7684\u4f20\u64ad\u901f\u5ea6\u3002\u9ad8\u70ed\u6269\u6563\u7387\u610f\u5473\u7740\u70ed\u80fd\u80fd\u8fc5\u901f\u4ece\u70ed\u6e90\u4f20\u64ad\u5230\u5176\u4ed6\u90e8\u5206\uff0c\u800c\u4f4e\u70ed\u6269\u6563\u7387\u5219\u8868\u793a\u70ed\u80fd\u4f20\u64ad\u8f83\u6162\u3002\u5177\u4f53\u5f71\u54cd\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>\u70ed\u4f20\u5bfc\u901f\u5ea6\uff1a<\/strong>\u62e5\u6709\u9ad8\u70ed\u6269\u6563\u7387\u7684\u6750\u6599\uff0c\u5982\u94dc\u548c\u94dd\uff0c\u70ed\u91cf\u4f20\u64ad\u8fc5\u901f\u3002\u56e0\u6b64\uff0c\u5b83\u4eec\u5728\u51b7\u5374\u548c\u52a0\u70ed\u5e94\u7528\u4e2d\u5f97\u5230\u4e86\u5e7f\u6cdb\u4f7f\u7528\u3002<\/li>\n<li><strong>\u6e29\u5ea6\u68af\u5ea6\uff1a<\/strong>\u9ad8\u70ed\u6269\u6563\u7387\u80fd\u6709\u6548\u5730\u964d\u4f4e\u6e29\u5ea6\u68af\u5ea6\uff0c\u907f\u514d\u8bbe\u5907\u56e0\u5c40\u90e8\u8fc7\u70ed\u800c\u51fa\u73b0\u95ee\u9898\u3002\u53cd\u4e4b\uff0c\u4f4e\u70ed\u6269\u6563\u7387\u6750\u6599\u5219\u5bb9\u6613\u5f62\u6210\u8f83\u5927\u7684\u6e29\u5ea6\u68af\u5ea6\u3002<\/li>\n<li><strong>\u70ed\u7ba1\u7406\u6548\u7387\uff1a<\/strong>\u5728\u9700\u8981\u9ad8\u6548\u6563\u70ed\u7684\u7cfb\u7edf\u4e2d\uff0c\u5982\u6563\u70ed\u5668\u6216\u7535\u5b50\u8bbe\u5907\uff0c\u9009\u62e9\u9ad8\u70ed\u6269\u6563\u7387\u7684\u6750\u6599\u6709\u52a9\u4e8e\u63d0\u5347\u6574\u4f53\u70ed\u7ba1\u7406\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u8003\u8651\u56e0\u7d20<\/h2>\n<p>\u8bbe\u8ba1\u70ed\u7ba1\u7406\u7cfb\u7edf\u65f6\uff0c\u5de5\u7a0b\u5e08\u4e0d\u4ec5\u8981\u8003\u8651\u6750\u6599\u7684\u70ed\u6269\u6563\u7387\uff0c\u8fd8\u9700\u8981\u7efc\u5408\u8bc4\u4ef7\u5176\u4ed6\u56e0\u7d20\uff0c\u5982\u673a\u68b0\u5f3a\u5ea6\u3001\u6210\u672c\u548c\u91cd\u91cf\u3002\u5e38\u7528\u7684\u9ad8\u70ed\u6269\u6563\u7387\u6750\u6599\u5305\u62ec\uff1a<\/p>\n<p><o1><\/p>\n<li>\u94dc\uff1a\u5177\u6709\u6781\u9ad8\u7684\u70ed\u5bfc\u7387\u548c\u70ed\u6269\u6563\u7387\uff0c\u5e38\u7528\u4e8e\u6563\u70ed\u5668\u548c\u7535\u7f06\u3002<\/li>\n<li>\u94dd\uff1a\u867d\u7136\u70ed\u5bfc\u7387\u6b21\u4e8e\u94dc\uff0c\u4f46\u5b83\u4ef7\u683c\u4f4e\u5ec9\u4e14\u91cd\u91cf\u8f7b\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u822a\u7a7a\u822a\u5929\u548c\u6c7d\u8f66\u5de5\u4e1a\u3002<\/li>\n<li>\u77f3\u58a8\uff1a\u5177\u6709\u9ad8\u70ed\u6269\u6563\u7387\u548c\u826f\u597d\u7684\u5bfc\u70ed\u6027\uff0c\u5e38\u7528\u4e8e\u7535\u5b50\u8bbe\u5907\u7684\u6563\u70ed\u6750\u6599\u3002<\/li>\n<p><\/o1><\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u70ed\u6269\u6563\u7387\u662f\u5f71\u54cd\u70ed\u4f20\u5bfc\u884c\u4e3a\u7684\u91cd\u8981\u53c2\u6570\u3002\u5728\u70ed\u5de5\u7a0b\u8bbe\u8ba1\u4e2d\uff0c\u9009\u62e9\u5408\u9002\u7684\u6750\u6599\u4e0d\u4ec5\u80fd\u63d0\u9ad8\u70ed\u4f20\u5bfc\u6548\u7387\uff0c\u8fd8\u80fd\u6709\u6548\u7ba1\u7406\u7cfb\u7edf\u6e29\u5ea6\uff0c\u4fdd\u8bc1\u8bbe\u5907\u7684\u7a33\u5b9a\u548c\u53ef\u9760\u8fd0\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u70ed\u6269\u6563\u7387\u5982\u4f55\u5f71\u54cd\u70ed\u4f20\u5bfc\uff1a\u8be6\u7ec6\u8bb2\u89e3\u70ed\u6269\u6563\u7387\u7684\u6982\u5ff5\u53ca\u5176\u5bf9\u70ed\u4f20\u5bfc\u8fc7\u7a0b\u7684\u5f71\u54cd\uff0c\u5e2e\u52a9\u7406\u89e3\u6750\u6599\u4f20\u70ed\u6027\u80fd\u53d8\u5316\u7684\u539f\u56e0\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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