{"id":740104,"date":"2024-09-28T22:17:12","date_gmt":"2024-09-28T21:17:12","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=740104"},"modified":"2024-09-28T22:17:12","modified_gmt":"2024-09-28T21:17:12","slug":"%e5%b0%81%e9%97%ad%e7%a9%ba%e9%97%b4%e4%b8%ad%e7%9a%84%e8%87%aa%e7%84%b6%e5%af%b9%e6%b5%81","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/zh-hans\/%e5%b0%81%e9%97%ad%e7%a9%ba%e9%97%b4%e4%b8%ad%e7%9a%84%e8%87%aa%e7%84%b6%e5%af%b9%e6%b5%81\/","title":{"rendered":"\u5c01\u95ed\u7a7a\u95f4\u4e2d\u7684\u81ea\u7136\u5bf9\u6d41"},"content":{"rendered":"<p class=\"sidekick\">\u5728\u5c01\u95ed\u7a7a\u95f4\u4e2d\u7684\u81ea\u7136\u5bf9\u6d41\uff0c\u901a\u8fc7\u6e29\u5ea6\u5dee\u5f02\u5f15\u53d1\u4ecb\u8d28\u6d41\u52a8\uff0c\u5f71\u54cd\u6563\u70ed\u6548\u7387\u3002\u672c\u6587\u7ae0\u8bb2\u89e3\u5176\u57fa\u672c\u539f\u7406\u548c\u5b9e\u9645\u5e94\u7528\u3002<\/p>\n<p><img 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= \\(\\frac{\\rho v L}{\\mu}\\)<\/p>\n<p>\u5176\u4e2d \\(\\rho\\) \u662f\u6d41\u4f53\u5bc6\u5ea6\uff0c\\(v\\) \u662f\u6d41\u901f\uff0c\\(L\\) \u662f\u7279\u5f81\u957f\u5ea6\uff0c\\(\\mu\\) \u662f\u52a8\u6001\u7c98\u5ea6\u3002<\/p>\n<p><b>\u52aa\u585e\u5c14\u7279\u6570\uff08Nu\uff09<\/b>\uff1a\u4e00\u4e2a\u65e0\u91cf\u7eb2\u6570\uff0c\u7528\u4e8e\u63cf\u8ff0\u5bf9\u6d41\u6362\u70ed\u4e0e\u5bfc\u70ed\u7684\u6bd4\u503c\u3002\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p>Nu = \\(\\frac{h L}{k}\\)<\/p>\n<p>\u5176\u4e2d \\(h\\) \u662f\u5bf9\u6d41\u6362\u70ed\u7cfb\u6570\uff0c\\(L\\) \u662f\u7279\u5f81\u957f\u5ea6\uff0c\\(k\\) 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