{"id":1526,"date":"2026-10-27T07:00:00","date_gmt":"2026-10-26T22:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=1526"},"modified":"2026-10-24T07:13:51","modified_gmt":"2026-10-23T22:13:51","slug":"qs-biot-lumped-temperature-20261024","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=1526","title":{"rendered":"\u30d3\u30aa\u6570\u3001\u7269\u4f53\u3092\u300c\u4e00\u3064\u306e\u6e29\u5ea6\u300d\u3067\u6271\u3063\u3066\u3088\u3044\u6761\u4ef6"},"content":{"rendered":"<p>\u71b1\u3044\u90e8\u54c1\u3092\u51b7\u307e\u3059\u3068\u304d\u3001\u6e29\u5ea6\u8a08\u306b\u8868\u793a\u3055\u308c\u308b\u4e00\u3064\u306e\u6570\u5b57\u3060\u3051\u3067\u3001\u5185\u90e8\u307e\u3067\u51b7\u3048\u305f\u3068\u5224\u65ad\u3057\u3066\u3088\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u91d1\u5c5e\u306e\u8584\u3044\u677f\u306a\u3089\u8fd1\u3044\u6e29\u5ea6\u306b\u306a\u308a\u3084\u3059\u304f\u3066\u3082\u3001\u71b1\u304c\u4f1d\u308f\u308a\u306b\u304f\u3044\u539a\u3044\u6750\u6599\u3067\u306f\u3001\u8868\u9762\u304c\u51b7\u3048\u3066\u3082\u4e2d\u5fc3\u306b\u71b1\u304c\u6b8b\u308a\u307e\u3059\u3002\u305d\u306e\u9055\u3044\u3092\u898b\u7a4d\u3082\u308b\u624b\u304c\u304b\u308a\u304c<strong>\u30d3\u30aa\u6570\uff08Biot number\uff09<\/strong>\u3067\u3059\u3002<\/p>\n<section class=\"influvetor-quick-summary\">\n<p><strong>\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f<\/strong><\/p>\n<ul>\n<li>\u30d3\u30aa\u6570\u306f\u3001\u7269\u4f53\u306e\u5185\u90e8\u3067\u71b1\u304c\u4f1d\u308f\u308b\u62b5\u6297\u3068\u3001\u8868\u9762\u304b\u3089\u5468\u56f2\u3078\u71b1\u304c\u79fb\u308b\u62b5\u6297\u306e\u6bd4\u3092\u8868\u3057\u307e\u3059\u3002\u5c0f\u3055\u3044\u307b\u3069\u3001\u5185\u90e8\u3092\u307b\u307c\u4e00\u3064\u306e\u6e29\u5ea6\u3067\u8fd1\u4f3c\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u4f53\u7a4d\u3092\u653e\u71b1\u9762\u7a4d\u3067\u5272\u3063\u305f\u9577\u3055\u3092\u4f7f\u3044\u3001Bi &lt; 0.1\u3092\u76ee\u5b89\u306b\u3059\u308b\u65b9\u6cd5\u304c\u4e00\u822c\u7684\u3067\u3059\u3002\u305f\u3060\u3057\u3001\u5f62\u72b6\u3084\u5fc5\u8981\u306a\u7cbe\u5ea6\u307e\u3067\u542b\u3081\u305f\u4e07\u80fd\u306e\u4fdd\u8a3c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>\u539a\u305520 mm\u306e\u677f\u3092\u6bd4\u3079\u308b\u72ec\u81ea\u8a08\u7b97\u3067\u306f\u3001\u4e00\u69d8\u6e29\u5ea6\u306e\u8fd1\u4f3c\u306f\u3069\u3061\u3089\u308242.1\u2103\u3067\u3082\u3001\u71b1\u4f1d\u5c0e\u7387\u304c\u4f4e\u3044\u677f\u306e\u4e2d\u5fc3\u306b\u306f52.0\u2103\u306e\u71b1\u304c\u6b8b\u308a\u307e\u3057\u305f\u3002<\/li>\n<\/ul>\n<\/section>\n<h2>\u300c\u5185\u90e8\u3092\u901a\u308b\u300d\u3068\u300c\u8868\u9762\u3092\u6e21\u308b\u300d\u3092\u6bd4\u3079\u308b<\/h2>\n<p>\u51b7\u5374\u306b\u306f\u3001\u5c11\u306a\u304f\u3068\u3082\u4e8c\u3064\u306e\u904e\u7a0b\u304c\u3042\u308a\u307e\u3059\u3002\u4e2d\u5fc3\u306e\u71b1\u304c\u6750\u6599\u306e\u4e2d\u3092\u901a\u3063\u3066\u8868\u9762\u3078\u5c4a\u304f\u904e\u7a0b\u3068\u3001\u8868\u9762\u306e\u71b1\u304c\u5468\u56f2\u306e\u7a7a\u6c17\u3084\u6db2\u4f53\u3078\u79fb\u308b\u904e\u7a0b\u3067\u3059\u3002\u5185\u90e8\u3067\u71b1\u3092\u904b\u3076\u80fd\u529b\u3092\u8868\u3059\u306e\u304c\u71b1\u4f1d\u5c0e\u7387k\u3001\u8868\u9762\u3068\u6d41\u4f53\u306e\u71b1\u306e\u53d7\u3051\u6e21\u3057\u3092\u8868\u3059\u306e\u304c\u71b1\u4f1d\u9054\u7387h\u3067\u3059\u3002\u540c\u3058\u300c\u71b1\u3092\u4f1d\u3048\u308b\u300d\u3067\u3082\u3001\u62c5\u5f53\u3059\u308b\u5834\u6240\u304c\u9055\u3044\u307e\u3059\u3002<\/p>\n<p>\u30d3\u30aa\u6570\u306f<strong>Bi = hL<sub>c<\/sub>\/k<\/strong>\u3068\u66f8\u3051\u307e\u3059\u3002L<sub>c<\/sub>\u306f\u4ee3\u8868\u9577\u3055\u3067\u3059\u3002\u96c6\u4e2d\u5b9a\u6570\u8fd1\u4f3c\u306e\u53ef\u5426\u3092\u898b\u7a4d\u3082\u308b\u3068\u304d\u306f\u3001\u7269\u4f53\u306e\u4f53\u7a4dV\u3092\u3001\u71b1\u3092\u3084\u308a\u53d6\u308a\u3059\u308b\u8868\u9762\u7a4dA\u3067\u5272\u3063\u305f<strong>L<sub>c<\/sub> = V\/A<\/strong>\u3092\u4f7f\u3044\u307e\u3059\u3002\u9762\u7a4d\u3067\u63db\u7b97\u3057\u305f\u5185\u90e8\u306e\u62b5\u6297\u3092L<sub>c<\/sub>\/k\u3001\u5916\u5074\u306e\u62b5\u6297\u30921\/h\u3068\u8003\u3048\u308b\u3068\u3001\u4e21\u8005\u306e\u6bd4\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002[1][2]<\/p>\n<p>Bi\u304c\u5c0f\u3055\u3044\u5834\u5408\u306f\u3001\u5185\u90e8\u3088\u308a\u3082\u8868\u9762\u304b\u3089\u5916\u5074\u3078\u306e\u71b1\u79fb\u52d5\u304c\u9032\u307f\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002\u5185\u90e8\u306e\u6e29\u5ea6\u5dee\u304c\u5c0f\u3055\u3044\u307e\u307e\u3001\u7269\u4f53\u5168\u4f53\u304c\u3086\u3063\u304f\u308a\u51b7\u3048\u3066\u3044\u304f\u72b6\u614b\u3092\u8fd1\u4f3c\u3067\u304d\u307e\u3059\u3002Bi\u304c\u5927\u304d\u3044\u5834\u5408\u306f\u3001\u5185\u90e8\u304b\u3089\u8868\u9762\u3078\u71b1\u304c\u5c4a\u304f\u307e\u3067\u306e\u62b5\u6297\u3092\u7121\u8996\u3057\u306b\u304f\u304f\u3001\u4e2d\u5fc3\u3068\u8868\u9762\u3092\u5225\u3005\u306b\u8003\u3048\u308b\u5fc5\u8981\u304c\u51fa\u3066\u304d\u307e\u3059\u3002<\/p>\n<p>\u51b7\u5374\u98a8\u3092\u5f37\u3081\u3066h\u3092\u5927\u304d\u304f\u3059\u308b\u3068\u3001\u5916\u5074\u306b\u306f\u71b1\u3092\u6e21\u3057\u3084\u3059\u304f\u306a\u308b\u4e00\u65b9\u3001Bi\u306f\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002\u8868\u9762\u306e\u51b7\u5374\u304c\u9032\u3080\u307b\u3069\u3001\u5185\u90e8\u3068\u306e\u6e29\u5ea6\u5dee\u304c\u76ee\u7acb\u3064\u3053\u3068\u304c\u3042\u308b\u3001\u3068\u3044\u3046\u95a2\u4fc2\u3067\u3059\u3002\u53cd\u5bfe\u306b\u3001h\u304c\u5c0f\u3055\u304f\u3066Bi\u304c\u5c0f\u3055\u3044\u7269\u4f53\u306f\u3001\u4e00\u69d8\u6e29\u5ea6\u306b\u8fd1\u304f\u3066\u3082\u51b7\u5374\u305d\u306e\u3082\u306e\u306f\u9045\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<strong>\u5c0f\u3055\u3044Bi\u306f\u300c\u901f\u304f\u51b7\u3048\u308b\u300d\u306e\u610f\u5473\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/strong><\/p>\n<h2>\u4e00\u3064\u306e\u6e29\u5ea6\u306b\u307e\u3068\u3081\u308b\u3068\u3001\u8a08\u7b97\u306f\u3069\u3046\u5909\u308f\u308b\uff1f<\/h2>\n<p>\u7269\u4f53\u306e\u5185\u90e8\u3092\u4e00\u69d8\u6e29\u5ea6\u3068\u307f\u306a\u3059\u65b9\u6cd5\u3092\u3001\u96c6\u4e2d\u5b9a\u6570\u8fd1\u4f3c\u3001\u307e\u305f\u306f\u96c6\u4e2d\u71b1\u5bb9\u91cf\u6cd5\u3068\u547c\u3073\u307e\u3059\u3002\u7269\u4f53\u304c\u84c4\u3048\u3066\u3044\u308b\u71b1\u3068\u3001\u8868\u9762\u304b\u3089\u51fa\u3066\u3044\u304f\u71b1\u306e\u53ce\u652f\u3060\u3051\u3067\u3001\u6642\u9593\u3054\u3068\u306e\u6e29\u5ea6\u3092\u6c42\u3081\u307e\u3059\u3002\u5468\u56f2\u306e\u6d41\u4f53\u6e29\u5ea6T<sub>\u221e<\/sub>\u3001h\u3001\u5bc6\u5ea6\u03c1\u3001\u6bd4\u71b1c\u3092\u4e00\u5b9a\u3068\u3057\u3001\u5185\u90e8\u3067\u767a\u71b1\u3057\u306a\u3044\u5834\u5408\u306f\u3001\u6b21\u306e\u6307\u6570\u95a2\u6570\u306b\u306a\u308a\u307e\u3059\u3002[2]<\/p>\n<p><strong>T(t) = T<sub>\u221e<\/sub> + (T<sub>i<\/sub> \u2212 T<sub>\u221e<\/sub>) exp(\u2212t\/\u03c4)<\/strong><br \/>\u6642\u5b9a\u6570\u306f <strong>\u03c4 = \u03c1cV\/(hA)<\/strong>\u3002T<sub>i<\/sub>\u306f\u521d\u671f\u6e29\u5ea6\u3067\u3059\u3002\u03c4\u79d2\u305f\u3064\u3068\u3001\u5468\u56f2\u3068\u306e\u6e29\u5ea6\u5dee\u304c\u521d\u3081\u306e\u7d0437%\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u5f0f\u306b\u71b1\u4f1d\u5c0e\u7387k\u304c\u76f4\u63a5\u51fa\u3066\u3053\u306a\u3044\u70b9\u304c\u5927\u5207\u3067\u3059\u3002\u5185\u90e8\u3067\u71b1\u304c\u5341\u5206\u306b\u884c\u304d\u6e21\u308b\u3068\u4eee\u5b9a\u3057\u305f\u305f\u3081\u3067\u3001\u3069\u3093\u306a\u6750\u6599\u306b\u3082k\u304c\u4e0d\u8981\u306b\u306a\u3063\u305f\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5f0f\u3092\u4f7f\u3046\u524d\u306b\u3001k\u3092\u542b\u3080Bi\u3067\u3001\u305d\u306e\u4eee\u5b9a\u304c\u6210\u308a\u7acb\u3061\u305d\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<h2>\u539a\u305520 mm\u306e\u677f\u3067\u3001\u4e2d\u5fc3\u306b\u6b8b\u308b\u71b1\u3092\u898b\u308b<\/h2>\n<p>\u539a\u305520 mm\u306e\u5747\u8cea\u306a\u677f\u304c\u3001\u521d\u3081\u306f\u5168\u4f53\u306780\u2103\u3060\u3063\u305f\u3068\u3057\u307e\u3059\u3002\u4e21\u9762\u309220\u2103\u306e\u6d41\u4f53\u306b\u63a5\u89e6\u3055\u305b\u3001\u71b1\u4f1d\u9054\u7387h\u309250 W\/(m\u00b2\u00b7K)\u306b\u4fdd\u3061\u307e\u3059\u3002\u7aef\u9762\u304b\u3089\u306e\u653e\u71b1\u306f\u7121\u8996\u3057\u3001\u539a\u3055\u65b9\u5411\u3060\u3051\u306b\u71b1\u304c\u6d41\u308c\u308b\u7406\u60f3\u30e2\u30c7\u30eb\u3067\u3059\u3002\u5bc6\u5ea6\u3068\u6bd4\u71b1\u306e\u7a4d\u03c1c\u306f\u3001\u3069\u3061\u3089\u306e\u6750\u6599\u30822.0 \u00d7 10<sup>6<\/sup> J\/(m\u00b3\u00b7K)\u3068\u3057\u307e\u3059\u3002<\/p>\n<p>\u4e21\u9762\u304c\u653e\u71b1\u3059\u308b\u677f\u306a\u306e\u3067\u3001V\/A\u306f\u539a\u3055\u306e\u534a\u5206\u3001<strong>10 mm<\/strong>\u3067\u3059\u3002\u3053\u3053\u306720 mm\u3092\u305d\u306e\u307e\u307e\u5165\u308c\u308b\u3068\u3001Bi\u30922\u500d\u306b\u898b\u7a4d\u3082\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u7247\u9762\u3060\u3051\u3092\u51b7\u5374\u3059\u308b\u5834\u5408\u306a\u3069\u306f\u3001\u653e\u71b1\u9762\u7a4d\u3068\u5883\u754c\u6761\u4ef6\u304b\u3089\u898b\u76f4\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u71b1\u4f1d\u5c0e\u7387\u3060\u3051\u309250\u30680.5 W\/(m\u00b7K)\u306b\u5909\u3048\u308b\u3068\u3001Bi\u306f\u305d\u308c\u305e\u308c0.01\u30681\u306b\u306a\u308a\u307e\u3059\u3002\u96c6\u4e2d\u5b9a\u6570\u8fd1\u4f3c\u306e\u6642\u5b9a\u6570\u306f\u3001\u3069\u3061\u3089\u3082400\u79d2\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u677f\u306e\u5185\u90e8\u306e\u6e29\u5ea6\u5206\u5e03\u3092\u542b\u3081\u3066\u8a08\u7b97\u3059\u308b\u3068\u3001400\u79d2\u5f8c\u306b\u6b21\u306e\u5dee\u304c\u751f\u307e\u308c\u307e\u3059\u3002<\/p>\n<div style=\"overflow-x:auto\">\n<table style=\"border-collapse:collapse;width:100%;min-width:320px\">\n<thead>\n<tr>\n<th style=\"padding:10px;border:1px solid #ccd\">400\u79d2\u5f8c\u306e\u6bd4\u8f03<\/th>\n<th style=\"padding:10px;border:1px solid #ccd\">\u71b1\u304c\u4f1d\u308f\u308a\u3084\u3059\u3044\u677f<\/th>\n<th style=\"padding:10px;border:1px solid #ccd\">\u71b1\u304c\u4f1d\u308f\u308a\u306b\u304f\u3044\u677f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th style=\"padding:10px;border:1px solid #ccd\">\u71b1\u4f1d\u5c0e\u7387 k<\/th>\n<td style=\"padding:10px;border:1px solid #ccd\">50 W\/(m\u00b7K)<\/td>\n<td style=\"padding:10px;border:1px solid #ccd\">0.5 W\/(m\u00b7K)<\/td>\n<\/tr>\n<tr>\n<th style=\"padding:10px;border:1px solid #ccd\">\u30d3\u30aa\u6570 Bi<\/th>\n<td style=\"padding:10px;border:1px solid #ccd\">0.01<\/td>\n<td style=\"padding:10px;border:1px solid #ccd\">1<\/td>\n<\/tr>\n<tr>\n<th style=\"padding:10px;border:1px solid #ccd\">\u96c6\u4e2d\u5b9a\u6570\u8fd1\u4f3c<\/th>\n<td style=\"padding:10px;border:1px solid #ccd\">42.1\u2103<\/td>\n<td style=\"padding:10px;border:1px solid #ccd\">42.1\u2103<\/td>\n<\/tr>\n<tr>\n<th style=\"padding:10px;border:1px solid #ccd\">\u4e2d\u5fc3\u306e\u6e29\u5ea6<\/th>\n<td style=\"padding:10px;border:1px solid #ccd\">42.2\u2103<\/td>\n<td style=\"padding:10px;border:1px solid #ccd\">52.0\u2103<\/td>\n<\/tr>\n<tr>\n<th style=\"padding:10px;border:1px solid #ccd\">\u8868\u9762\u306e\u6e29\u5ea6<\/th>\n<td style=\"padding:10px;border:1px solid #ccd\">42.1\u2103<\/td>\n<td style=\"padding:10px;border:1px solid #ccd\">40.9\u2103<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<figure><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-biot-lumped-temperature-20261024-figure-62ec99a2d727.png\" alt=\"\u51b7\u5374400\u79d2\u5f8c\u306e\u677f\u306e\u539a\u3055\u65b9\u5411\u306e\u6e29\u5ea6\u3002Bi\u304c0.01\u306e\u677f\u306f\u4e2d\u5fc342.2\u2103\u3001\u8868\u976242.1\u2103\u3068\u307b\u307c\u4e00\u69d8\u3002Bi\u304c1\u306e\u677f\u306f\u8868\u976240.9\u2103\u3067\u3082\u4e2d\u5fc352.0\u2103\u304c\u6b8b\u308b\u3002\" style=\"width:100%;height:auto\"><figcaption>\u4e21\u9762\u5bfe\u6d41\u51b7\u5374\u306e\u5e73\u677f\u306b\u3064\u3044\u3066\u3001\u4f4d\u7f6e\u3054\u3068\u306e\u6e29\u5ea6\u3092\u56fa\u6709\u95a2\u6570\u5c55\u958b\u3067\u8a08\u7b97\u3002\u7834\u7dda\u306f\u4e00\u69d8\u6e29\u5ea6\u3092\u4eee\u5b9a\u3057\u305f42.1\u2103\u3002\u7aef\u9762\u653e\u71b1\u30fb\u5185\u90e8\u767a\u71b1\u30fb\u653e\u5c04\u3092\u542b\u3081\u306a\u3044\u7406\u60f3\u6761\u4ef6\u306e\u72ec\u81ea\u8a08\u7b97\u3067\u3001\u5b9f\u6e2c\u5024\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002[2]<\/figcaption><\/figure>\n<p>Bi = 0.01\u3067\u306f\u3001\u4e2d\u5fc3\u3068\u8868\u9762\u306e\u5dee\u306f\u7d040.1\u2103\u3067\u3059\u3002\u3053\u306e\u6761\u4ef6\u306a\u3089\u3001\u4e00\u3064\u306e\u6e29\u5ea6\u306b\u307e\u3068\u3081\u3066\u3082\u6e29\u5ea6\u5206\u5e03\u306b\u3088\u308b\u9055\u3044\u306f\u5c0f\u3055\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002Bi = 1\u3067\u306f\u3001\u4e2d\u5fc3\u3068\u8868\u9762\u306b\u7d0411.1\u2103\u306e\u5dee\u304c\u3042\u308a\u3001\u96c6\u4e2d\u5b9a\u6570\u8fd1\u4f3c\u306f\u4e2d\u5fc3\u6e29\u5ea6\u3092\u7d0410\u2103\u4f4e\u304f\u898b\u7a4d\u3082\u308a\u307e\u3059\u3002\u8868\u9762\u306e\u6e2c\u5b9a\u5024\u304c\u8fd1\u4f3c\u5024\u306b\u8fd1\u3044\u304b\u3089\u3068\u3044\u3063\u3066\u3001\u5185\u90e8\u3082\u540c\u3058\u6e29\u5ea6\u3068\u306f\u3044\u3048\u307e\u305b\u3093\u3002<\/p>\n<p>\u6e29\u5ea6\u5206\u5e03\u306b\u306f\u3001\u30d3\u30aa\u6570\u306b\u52a0\u3048\u3066\u3001\u71b1\u62e1\u6563\u7387\u03b1 = k\/(\u03c1c)\u3068\u7d4c\u904e\u6642\u9593\u3092\u307e\u3068\u3081\u305f<strong>\u30d5\u30fc\u30ea\u30a8\u6570 Fo = \u03b1t\/L\u00b2<\/strong>\u3082\u95a2\u4fc2\u3057\u307e\u3059\u3002\u3053\u306e\u677f\u3067\u306fL\u306f\u534a\u539a\u3055\u3067\u3059\u3002Bi\u306f\u5185\u90e8\u3068\u5916\u5074\u306e\u62b5\u6297\u306e\u91e3\u308a\u5408\u3044\u3092\u3001Fo\u306f\u305d\u306e\u9577\u3055\u306b\u5bfe\u3057\u3066\u71b1\u304c\u5e83\u304c\u308b\u6642\u9593\u306e\u9032\u307f\u5177\u5408\u3092\u8868\u3057\u307e\u3059\u3002\u8868\u306e\u5024\u306f\u3001\u4e21\u9762\u5bfe\u6d41\u51b7\u5374\u306e\u5e73\u677f\u306e\u7d1a\u6570\u89e3\u3092\u4f7f\u3044\u3001\u5225\u65b9\u5f0f\u306e\u6709\u9650\u4f53\u7a4d\u8a08\u7b97\u3067\u3082\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>0.1\u306e\u76ee\u5b89\u3068\u3001\u5b9f\u969b\u306e\u5224\u65ad\u3067\u6b8b\u308b\u6761\u4ef6<\/h2>\n<p>\u5185\u90e8\u3092\u4e00\u69d8\u6e29\u5ea6\u3068\u307f\u306a\u3059\u4ee3\u8868\u7684\u306a\u76ee\u5b89\u306fBi &lt; 0.1\u3067\u3059\u3002[1][2] \u305f\u3060\u3057\u3001\u5883\u754c\u6761\u4ef6\u3001\u5f62\u72b6\u3001\u6642\u523b\u3001\u4e2d\u5fc3\u3068\u5e73\u5747\u306e\u3069\u3061\u3089\u3092\u77e5\u308a\u305f\u3044\u304b\u306b\u3088\u3063\u3066\u8aa4\u5dee\u306f\u5909\u308f\u308a\u307e\u3059\u3002\u300c0.1\u672a\u6e80\u3060\u304b\u3089\u3001\u3069\u306e\u6e29\u5ea6\u3082\u5fc5\u305a\u4e00\u5b9a\u306e\u8aa4\u5dee\u4ee5\u5185\u300d\u3068\u306f\u8aad\u307f\u66ff\u3048\u3089\u308c\u307e\u305b\u3093\u3002<\/p>\n<p>\u90e8\u54c1\u3092\u6bd4\u8f03\u3059\u308b\u3068\u304d\u306f\u3001\u307e\u305a<strong>\u3069\u306e\u9762\u304b\u3089\u71b1\u304c\u51fa\u308b\u306e\u304b<\/strong>\u3092\u6c7a\u3081\u3001V\/A\u3092\u6c42\u3081\u307e\u3059\u3002\u6b21\u306b\u6750\u6599\u306ek\u3060\u3051\u3067\u306a\u304f\u3001\u6d41\u308c\u3084\u63a5\u89e6\u6761\u4ef6\u306b\u4f9d\u5b58\u3059\u308bh\u3092\u898b\u7a4d\u3082\u308a\u307e\u3059\u3002\u305d\u306e\u3046\u3048\u3067\u3001\u4e2d\u5fc3\u306e\u6700\u9ad8\u6e29\u5ea6\u3084\u6e29\u5ea6\u5dee\u304c\u91cd\u8981\u306a\u3089\u3001\u5358\u4e00\u306e\u6e29\u5ea6\u3067\u306f\u306a\u304f\u4f4d\u7f6e\u3054\u3068\u306e\u6e29\u5ea6\u3092\u8a08\u7b97\u3059\u308b\u65b9\u6cd5\u3092\u9078\u3073\u307e\u3059\u3002<\/p>\n<p>\u591a\u5c64\u6750\u6599\u3001\u63a5\u89e6\u9762\u306e\u71b1\u62b5\u6297\u3001\u5834\u6240\u306b\u3088\u3063\u3066\u7570\u306a\u308b\u767a\u71b1\u3001\u6e29\u5ea6\u306b\u3088\u308b\u7269\u6027\u306e\u5909\u5316\u304c\u3042\u308b\u5834\u5408\u306b\u306f\u3001\u3053\u306e\u5747\u8cea\u306a\u677f\u306e\u4f8b\u304b\u3089\u3055\u3089\u306b\u6761\u4ef6\u3092\u8db3\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30d3\u30aa\u6570\u306f\u3001\u4e00\u3064\u306e\u6e29\u5ea6\u3067\u6e08\u307e\u305b\u308b\u304b\u3001\u5185\u90e8\u307e\u3067\u5206\u3051\u3066\u8abf\u3079\u308b\u304b\u3092\u6c7a\u3081\u308b\u51fa\u767a\u70b9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u51fa\u5178<\/h2>\n<ol>\n<li>John H. Lienhard V \/ John H. Lienhard IV, <a href=\"https:\/\/bpb-us-e1.wpmucdn.com\/sites.mit.edu\/dist\/6\/1810\/files\/2024\/04\/AHTTv600.pdf\">A Heat Transfer Textbook, Sixth Edition, Version 6.00<\/a>\uff082024\u5e744\u670819\u65e5\uff09\u3002\u7b2c5\u7ae0\u3001\u7279\u306b\u00a75.2\u3001\u00a75.4\u30fbFigure 5.7\u3002<\/li>\n<li>NPTEL, <a href=\"https:\/\/archive.nptel.ac.in\/content\/storage2\/courses\/112108149\/pdf\/M5\/M5TeacherSlides.pdf\">Unsteady Heat Transfer, Module 5 Teacher Slides<\/a>\u3002\u96c6\u4e2d\u5b9a\u6570\u8fd1\u4f3c\u3001\u30d3\u30aa\u6570\u3001\u4e21\u9762\u5bfe\u6d41\u6761\u4ef6\u306e\u5e73\u677f\u306e\u7d1a\u6570\u89e3\uff08PDF 4\u201311\u30da\u30fc\u30b8\u3001\u516c\u958b\u5e74\u8868\u8a18\u306a\u3057\uff09\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u71b1\u3044\u90e8\u54c1\u3092\u51b7\u307e\u3059\u3068\u304d\u3001\u6e29\u5ea6\u8a08\u306b\u8868\u793a\u3055\u308c\u308b\u4e00\u3064\u306e\u6570\u5b57\u3060\u3051\u3067\u3001\u5185\u90e8\u307e\u3067\u51b7\u3048\u305f\u3068\u5224\u65ad\u3057\u3066\u3088\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u91d1\u5c5e\u306e\u8584\u3044\u677f\u306a\u3089\u8fd1\u3044\u6e29\u5ea6\u306b\u306a\u308a\u3084\u3059\u304f\u3066\u3082\u3001\u71b1\u304c\u4f1d\u308f\u308a\u306b\u304f\u3044\u539a\u3044\u6750\u6599\u3067\u306f\u3001\u8868\u9762\u304c\u51b7\u3048\u3066\u3082\u4e2d\u5fc3\u306b\u71b1\u304c\u6b8b\u308a\u307e\u3059\u3002\u305d\u306e\u9055\u3044\u3092\u898b\u7a4d [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1524,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":false,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[34],"tags":[306],"class_list":["post-1526","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials-manufacturing","tag-biot-number"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-biot-lumped-temperature-20261024-featured-00f1bc77adb9.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1526","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1526"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1526\/revisions"}],"predecessor-version":[{"id":1527,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1526\/revisions\/1527"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/1524"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1526"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1526"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1526"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}