{"id":725199,"date":"2024-08-18T07:13:30","date_gmt":"2024-08-18T06:13:30","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=725199"},"modified":"2024-08-18T07:13:30","modified_gmt":"2024-08-18T06:13:30","slug":"%e7%83%ad%e5%af%bc%e7%8e%87%e6%b5%8b%e9%87%8f%e7%9a%84%e4%b8%89%e7%a7%8d%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/zh-hans\/%e7%83%ad%e5%af%bc%e7%8e%87%e6%b5%8b%e9%87%8f%e7%9a%84%e4%b8%89%e7%a7%8d%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u70ed\u5bfc\u7387\u6d4b\u91cf\u7684\u4e09\u79cd\u65b9\u6cd5"},"content":{"rendered":"<p class=\"sidekick\">\u70ed\u5bfc\u7387\u6d4b\u91cf\u7684\u4e09\u79cd\u65b9\u6cd5\uff1a\u672c\u6587\u4ecb\u7ecd\u4e86\u4e09\u79cd\u5e38\u7528\u7684\u70ed\u5bfc\u7387\u6d4b\u91cf\u65b9\u6cd5\uff0c\u5305\u62ec\u7a33\u6001\u6cd5\u3001\u77ac\u6001\u6cd5\u548c\u8109\u51b2\u6cd5\uff0c\u5e2e\u52a9\u60a8\u4e86\u89e3\u5404\u81ea\u7684\u4f18\u7f3a\u70b9\u3002<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/07\/\u70ed\u5bfc\u7387\u6d4b\u91cf\u7684\u4e09\u79cd\u65b9\u6cd5.png\" alt=\"\u70ed\u5bfc\u7387\u6d4b\u91cf\u7684\u4e09\u79cd\u65b9\u6cd5\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u70ed\u5bfc\u7387\u6d4b\u91cf\u7684\u4e09\u79cd\u65b9\u6cd5<\/h2>\n<p>\u70ed\u5bfc\u7387\u662f\u63cf\u8ff0\u6750\u6599\u4f20\u5bfc\u70ed\u91cf\u80fd\u529b\u7684\u91cd\u8981\u7269\u7406\u53c2\u6570\u3002\u6d4b\u91cf\u70ed\u5bfc\u7387\u7684\u65b9\u6cd5\u591a\u79cd\u591a\u6837\uff0c\u4e0b\u9762\u4ecb\u7ecd\u4e09\u79cd\u5e38\u89c1\u7684\u6d4b\u91cf\u65b9\u6cd5\uff1a\u7a33\u6001\u6cd5\u3001\u7edd\u70ed\u6cd5\u548c\u6fc0\u5149\u95ea\u5149\u6cd5\u3002<\/p>\n<p><u1><\/p>\n<li>\u7a33\u6001\u6cd5<\/li>\n<li>\u7edd\u70ed\u6cd5<\/li>\n<li>\u6fc0\u5149\u95ea\u5149\u6cd5<\/li>\n<p><\/u1><\/p>\n<h2>\u7a33\u6001\u6cd5<\/h2>\n<p>\u7a33\u6001\u6cd5\u662f\u4e00\u79cd\u5e38\u7528\u7684\u6d4b\u91cf\u70ed\u5bfc\u7387\u7684\u65b9\u6cd5\u3002\u5176\u57fa\u672c\u539f\u7406\u662f\u5728\u5df2\u77e5\u6e29\u5dee\u4e0b\uff0c\u901a\u8fc7\u6d4b\u91cf\u6750\u6599\u4e24\u7aef\u7684\u70ed\u6d41\uff0c\u5229\u7528\u5085\u91cc\u53f6\u70ed\u4f20\u5bfc\u5b9a\u5f8b\u8ba1\u7b97\u70ed\u5bfc\u7387\u3002<\/p>\n<p>\u5085\u91cc\u53f6\u70ed\u4f20\u5bfc\u5b9a\u5f8b\u53ef\u4ee5\u8868\u793a\u4e3a\uff1a \\( q = -k \\frac{dT}{dx} \\)<\/p>\n<p>\u5176\u4e2d\uff0c\\( q \\) \u8868\u793a\u70ed\u6d41\u5bc6\u5ea6\uff0c\\( k \\) \u4e3a\u70ed\u5bfc\u7387\uff0c\\( \\frac{dT}{dx} \\) \u4e3a\u6e29\u5ea6\u68af\u5ea6\u3002<\/p>\n<ol>\n<li>\u5c06\u6837\u54c1\u56fa\u5b9a\u5728\u4e24\u7aef\uff0c\u5e76\u786e\u4fdd\u6837\u54c1\u5904\u4e8e\u7a33\u6001\uff08\u6e29\u5ea6\u4e0d\u968f\u65f6\u95f4\u53d8\u5316\uff09\u3002<\/li>\n<li>\u5728\u6837\u54c1\u4e24\u7aef\u65bd\u52a0\u5df2\u77e5\u7684\u6e29\u5dee\u3002<\/li>\n<li>\u901a\u8fc7\u6d4b\u91cf\u70ed\u6d41\u91cf\u548c\u6e29\u5dee\uff0c\u5229\u7528\u5085\u91cc\u53f6\u5b9a\u5f8b\u8ba1\u7b97\u70ed\u5bfc\u7387\u3002<\/li>\n<\/ol>\n<h2>\u7edd\u70ed\u6cd5<\/h2>\n<p>\u7edd\u70ed\u6cd5\u662f\u4e00\u79cd\u6d4b\u91cf\u70ed\u5bfc\u7387\u7684\u52a8\u6001\u65b9\u6cd5\uff0c\u5e38\u7528\u4e8e\u6d4b\u91cf\u77ac\u6001\u70ed\u5bfc\u7387\u3002\u5176\u57fa\u672c\u539f\u7406\u662f\u5c06\u70ed\u91cf\u65bd\u52a0\u5230\u6837\u54c1\u4e00\u4fa7\uff0c\u7136\u540e\u8bb0\u5f55\u6e29\u5ea6\u968f\u65f6\u95f4\u7684\u53d8\u5316\u3002<\/p>\n<p>\u91c7\u7528\u7edd\u70ed\u6cd5\u6d4b\u91cf\u65f6\uff0c\u901a\u5e38\u9700\u8981\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\u5728\u6837\u54c1\u4e00\u4fa7\u65bd\u52a0\u77ac\u65f6\u70ed\u8109\u51b2\u3002<\/li>\n<li>\u5229\u7528\u9ad8\u7075\u654f\u5ea6\u7684\u6e29\u5ea6\u4f20\u611f\u5668\u8bb0\u5f55\u6e29\u5ea6\u968f\u65f6\u95f4\u7684\u53d8\u5316\u3002<\/li>\n<li>\u6839\u636e\u70ed\u6269\u6563\u65b9\u7a0b\uff1a \\( \\frac{\\partial T}{\\partial t} = \\alpha \\frac{\\partial^2 T}{\\partial x^2} \\)<br \/>\n      \u8ba1\u7b97\u51fa\u70ed\u6269\u6563\u7cfb\u6570 \\( \\alpha \\)\uff0c\u8fdb\u800c\u5f97\u5230\u70ed\u5bfc\u7387 \\( k = \\alpha \\cdot \\rho \\cdot c \\)\uff0c\u5176\u4e2d \\( \\rho \\) \u4e3a\u6750\u6599\u5bc6\u5ea6\uff0c\\( c \\) \u4e3a\u6bd4\u70ed\u5bb9\u3002<\/li>\n<\/ol>\n<h2>\u6fc0\u5149\u95ea\u5149\u6cd5<\/h2>\n<p>\u6fc0\u5149\u95ea\u5149\u6cd5\u662f\u4e00\u79cd\u9ad8\u901f\u3001\u975e\u63a5\u89e6\u7684\u6d4b\u91cf\u65b9\u6cd5\uff0c\u7279\u522b\u9002\u7528\u4e8e\u6d4b\u91cf\u6750\u6599\u5728\u9ad8\u6e29\u6761\u4ef6\u4e0b\u7684\u70ed\u5bfc\u7387\u3002\u5176\u57fa\u672c\u539f\u7406\u662f\u5229\u7528\u6fc0\u5149\u8109\u51b2\u52a0\u70ed\u6837\u54c1\u8868\u9762\uff0c\u901a\u8fc7\u8bb0\u5f55\u53cd\u9762\u7684\u6e29\u5ea6\u53d8\u5316\u6765\u8ba1\u7b97\u70ed\u6269\u6563\u7cfb\u6570\u548c\u70ed\u5bfc\u7387\u3002<\/p>\n<p>\u6fc0\u5149\u95ea\u5149\u6cd5\u6d4b\u91cf\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u7528\u6fc0\u5149\u8109\u51b2\u52a0\u70ed\u6837\u54c1\u7684\u4e00\u4e2a\u8868\u9762\u3002<\/li>\n<li>\u5728\u6837\u54c1\u53cd\u9762\u4f7f\u7528\u7ea2\u5916\u63a2\u6d4b\u5668\u8bb0\u5f55\u6e29\u5ea6\u968f\u65f6\u95f4\u7684\u53d8\u5316\u3002<\/li>\n<li>\u5229\u7528\u6e29\u5ea6\u968f\u65f6\u95f4\u7684\u53d8\u5316\u66f2\u7ebf\uff0c\u6839\u636e\u7406\u8bba\u6a21\u578b\u8ba1\u7b97\u51fa\u70ed\u6269\u6563\u7cfb\u6570 \\( \\alpha \\)\uff0c<br \/>\n      \u518d\u901a\u8fc7 \\( k = \\alpha \\cdot \\rho \\cdot c \\) \u8ba1\u7b97\u51fa\u70ed\u5bfc\u7387\u3002<\/li>\n<\/ol>\n<p>\u4ee5\u4e0a\u4e09\u79cd\u65b9\u6cd5\u5404\u6709\u4f18\u52a3\uff0c\u9002\u7528\u4e0d\u540c\u7684\u7814\u7a76\u573a\u666f\u3002\u7a33\u6001\u6cd5\u9002\u7528\u4e8e\u5e38\u6e29\u4e0b\u7684\u6750\u6599\u70ed\u5bfc\u7387\u6d4b\u91cf\uff0c\u7edd\u70ed\u6cd5\u9002\u7528\u4e8e\u77ac\u6001\u70ed\u5bfc\u7387\u6d4b\u91cf\uff0c\u6fc0\u5149\u95ea\u5149\u6cd5\u5219\u5728\u9ad8\u6e29\u4e0b\u8868\u73b0\u7a81\u51fa\u3002\u8bfb\u8005\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u9700\u8981\u9009\u62e9\u5408\u9002\u7684\u6d4b\u91cf\u65b9\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u70ed\u5bfc\u7387\u6d4b\u91cf\u7684\u4e09\u79cd\u65b9\u6cd5\uff1a\u672c\u6587\u4ecb\u7ecd\u4e86\u4e09\u79cd\u5e38\u7528\u7684\u70ed\u5bfc\u7387\u6d4b\u91cf\u65b9\u6cd5\uff0c\u5305\u62ec\u7a33\u6001\u6cd5\u3001\u77ac\u6001\u6cd5\u548c\u8109\u51b2\u6cd5\uff0c\u5e2e\u52a9\u60a8\u4e86\u89e3\u5404\u81ea\u7684\u4f18\u7f3a\u70b9\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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