{"id":416774,"date":"2024-06-28T06:55:33","date_gmt":"2024-06-28T05:55:33","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/%e3%83%97%e3%83%a9%e3%83%b3%e3%83%88%e3%83%ab%e5%a2%83%e7%95%8c%e5%b1%a4%e3%81%a8%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/"},"modified":"2024-06-28T06:55:33","modified_gmt":"2024-06-28T05:55:33","slug":"%e3%83%97%e3%83%a9%e3%83%b3%e3%83%88%e3%83%ab%e5%a2%83%e7%95%8c%e5%b1%a4%e3%81%a8%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/ja\/%e3%83%97%e3%83%a9%e3%83%b3%e3%83%88%e3%83%ab%e5%a2%83%e7%95%8c%e5%b1%a4%e3%81%a8%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/","title":{"rendered":"\u30d7\u30e9\u30f3\u30c8\u30eb\u5883\u754c\u5c64\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p class=\"sidekick\">\u30d7\u30e9\u30f3\u30c8\u30eb\u5883\u754c\u5c64\u306f\u3001\u30eb\u30fc\u30c8\u30f4\u30a3\u30c3\u30d2\u30fb\u30d7\u30e9\u30f3\u30c8\u30eb\u306b\u3088\u3063\u3066\u63d0\u5531\u3055\u308c\u305f\u6d41\u4f53\u529b\u5b66\u3068\u71b1\u4f1d\u9054\u306b\u304a\u3051\u308b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3001\u7c98\u6027\u306e\u5f71\u97ff\u3067\u8868\u9762\u8fd1\u304f\u306e\u6d41\u4f53\u901f\u5ea6\u304c\u9045\u304f\u306a\u308b\u5c64\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n<p><img src=\"https:\/\/www.thermal-engineering.org\/wp-content\/uploads\/2024\/06\/\u30d7\u30e9\u30f3\u30c8\u30eb\u5883\u754c\u5c64\u3068\u306f\u4f55\u3067\u3059\u304b.png\" alt=\"\u30d7\u30e9\u30f3\u30c8\u30eb\u5883\u754c\u5c64\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\" style=\"display: block; margin-left: auto; margin-right: auto;\"\/><\/p>\n<h2>\u30d7\u30e9\u30f3\u30c8\u30eb\u5883\u754c\u5c64\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h2>\n<p>\u30d7\u30e9\u30f3\u30c8\u30eb\u5883\u754c\u5c64\uff08Prandtl boundary layer\uff09\u306f\u3001\u30c9\u30a4\u30c4\u306e\u79d1\u5b66\u8005\u30eb\u30fc\u30c8\u30f4\u30a3\u30c3\u30d2\u30fb\u30d7\u30e9\u30f3\u30c8\u30eb\uff08Ludwig Prandtl\uff09\u306b\u3088\u3063\u3066\u63d0\u5531\u3055\u308c\u305f\u6982\u5ff5\u3067\u3001\u6d41\u4f53\u529b\u5b66\u304a\u3088\u3073\u71b1\u4f1d\u9054\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u6d41\u4f53\u304c\u56fa\u4f53\u8868\u9762\u306b\u5bfe\u3057\u3066\u6d41\u308c\u308b\u3068\u304d\u3001\u8868\u9762\u8fd1\u304f\u306e\u6d41\u4f53\u306f\u7c98\u6027\u306e\u5f71\u97ff\u3092\u53d7\u3051\u3001\u901f\u5ea6\u304c\u9045\u304f\u306a\u308b\u5c64\u3002<\/li>\n<li>\u3053\u306e\u5c64\u3067\u306f\u3001\u7c98\u6027\u304c\u652f\u914d\u7684\u3067\u3042\u308a\u3001\u6d41\u901f\u304c\u30bc\u30ed\u304b\u3089\u81ea\u7531\u6d41\u901f\u307e\u3067\u5909\u5316\u3057\u307e\u3059\u3002<\/li>\n<li>\u30d7\u30e9\u30f3\u30c8\u30eb\u5883\u754c\u5c64\u7406\u8ad6\u306f\u3001\u7c98\u6027\u6d41\u4f53\u306e\u904b\u52d5\u3092\u3088\u308a\u3088\u304f\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u5883\u754c\u5c64\u306e\u539a\u3055<\/h2>\n<p>\u5883\u754c\u5c64\u306e\u539a\u3055 \\( \\delta \\) \u306f\u3001\u56fa\u4f53\u8868\u9762\u304b\u3089\u6d41\u308c\u304c\u307b\u307c\u81ea\u7531\u6d41\u901f \\( U \\) \u306b\u9054\u3059\u308b\u307e\u3067\u306e\u8ddd\u96e2\u3067\u3059\u3002\u3053\u308c\u3092\u6b21\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n<p>\\[ \\delta \\approx \\frac{5}{\\sqrt{\\text{Re}_x}} \\]\n<p>\u3053\u3053\u3067\u3001\\( \\text{Re}_x \\) \u306f\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u3067\u3001\u6b21\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\\[ \\text{Re}_x = \\frac{Ux}{\\nu} \\]\n<p>\u3053\u3053\u3067\u3001\\( x \\) \u306f\u6d41\u308c\u65b9\u5411\u306e\u8ddd\u96e2\u3001\\( \\nu \\) \u306f\u6d41\u4f53\u306e\u52d5\u7c98\u5ea6\u3067\u3059\u3002<\/p>\n<h2>\u71b1\u4f1d\u9054\u306b\u304a\u3051\u308b\u5883\u754c\u5c64<\/h2>\n<p>\u71b1\u4f1d\u9054\u306b\u304a\u3051\u308b\u5883\u754c\u5c64\u3082\u540c\u69d8\u306b\u91cd\u8981\u3067\u3059\u3002\u58c1\u9762\u8fd1\u304f\u306e\u6d41\u4f53\u306f\u3001\u6e29\u5ea6\u5834\u306b\u3082\u5f71\u97ff\u3092\u53d7\u3051\u3001\u71b1\u4f1d\u9054\u306e\u52b9\u7387\u3092\u5927\u304d\u304f\u5de6\u53f3\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u71b1\u5883\u754c\u5c64\u306e\u539a\u3055\u306f\u3001\u6e29\u5ea6\u52fe\u914d\u304c\u9855\u8457\u306a\u7bc4\u56f2\u3092\u6307\u3057\u307e\u3059\u3002<\/li>\n<li>\u30d7\u30e9\u30f3\u30c8\u30eb\u6570\uff08\\( \\text{Pr} \\)\uff09\u3092\u4f7f\u7528\u3057\u3066\u3001\u71b1\u5883\u754c\u5c64\u306e\u539a\u3055\u306f\u6b21\u306e\u3088\u3046\u306b\u8a08\u7b97\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\\[ \\text{Pr} = \\frac{\\nu}{\\alpha} \\]\n<p>\u3053\u3053\u3067\u3001\\( \\alpha \\) \u306f\u71b1\u62e1\u6563\u7387\u3067\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u30d7\u30e9\u30f3\u30c8\u30eb\u5883\u754c\u5c64\u7406\u8ad6\u306f\u3001\u7c98\u6027\u6d41\u4f53\u306e\u904b\u52d5\u3084\u71b1\u4f1d\u9054\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306a\u30c4\u30fc\u30eb\u3067\u3059\u3002\u5883\u754c\u5c64\u306e\u5f79\u5272\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u6d41\u4f53\u529b\u5b66\u3084\u71b1\u529b\u5b66\u306e\u73fe\u8c61\u3092\u3088\u308a\u6df1\u304f\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30d7\u30e9\u30f3\u30c8\u30eb\u5883\u754c\u5c64\u306f\u3001\u30eb\u30fc\u30c8\u30f4\u30a3\u30c3\u30d2\u30fb\u30d7\u30e9\u30f3\u30c8\u30eb\u306b\u3088\u3063\u3066\u63d0\u5531\u3055\u308c\u305f\u6d41\u4f53\u529b\u5b66\u3068\u71b1\u4f1d\u9054\u306b\u304a\u3051\u308b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3001\u7c98\u6027\u306e\u5f71\u97ff\u3067\u8868\u9762\u8fd1\u304f\u306e\u6d41\u4f53\u901f\u5ea6\u304c\u9045\u304f\u306a\u308b\u5c64\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[125],"tags":[],"yoast_head":"<!-- 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