{"id":1546,"date":"2026-10-29T04:00:00","date_gmt":"2026-10-28T19:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=1546"},"modified":"2026-10-27T09:44:11","modified_gmt":"2026-10-27T00:44:11","slug":"qs-reynolds-diameter-flow-20261024","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=1546","title":{"rendered":"\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u3001\u7ba1\u3092\u7d30\u304f\u3059\u308b\u3068\u6d41\u308c\u304c\u7a4f\u3084\u304b\u306b\u306a\u308b\u3068\u306f\u9650\u3089\u306a\u3044"},"content":{"rendered":"<p>\u6db2\u4f53\u3092\u6d41\u3059\u7ba1\u3092\u7d30\u304f\u3059\u308c\u3070\u3001\u6d41\u308c\u306f\u7a4f\u3084\u304b\u306b\u306a\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u5c0f\u3055\u306a\u6d41\u8def\u3067\u306f\u7c98\u6027\u306e\u5f71\u97ff\u304c\u76ee\u7acb\u3061\u3084\u3059\u3044\u3082\u306e\u306e\u3001\u7ba1\u5f84\u3060\u3051\u3067\u306f\u6c7a\u307e\u308a\u307e\u305b\u3093\u3002\u540c\u3058\u901f\u3055\u3067\u6d41\u3059\u306e\u304b\u3001\u540c\u3058\u91cf\u3092\u6bce\u5206\u9001\u308a\u8fbc\u3080\u306e\u304b\u306b\u3088\u3063\u3066\u3001\u7d30\u304f\u3057\u305f\u3068\u304d\u306e\u5909\u5316\u306f\u9006\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u9055\u3044\u3092\u6574\u7406\u3059\u308b\u9053\u5177\u304c\u3001\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\uff08Reynolds number\uff09\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>\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u306f\u3001\u6d41\u308c\u306e\u6163\u6027\u3068\u7c98\u6027\u306e\u76f8\u5bfe\u7684\u306a\u5f37\u3055\u3092\u6bd4\u3079\u308b\u6570\u3067\u3059\u3002\u5186\u7ba1\u3067\u306f\u3001\u65ad\u9762\u306e\u5e73\u5747\u6d41\u901f\u3001\u7ba1\u306e\u5185\u5f84\u3001\u6db2\u4f53\u306e\u52d5\u7c98\u5ea6\u304b\u3089\u6c42\u3081\u307e\u3059\u3002<\/li>\n<li>\u5e73\u5747\u6d41\u901f\u3092\u540c\u3058\u306b\u3057\u3066\u7ba1\u5f84\u309210\u5206\u306e1\u306b\u3059\u308b\u3068\u3001\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u308210\u5206\u306e1\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001\u6bce\u5206\u306e\u6d41\u91cf\u3092\u540c\u3058\u306b\u4fdd\u3064\u3068\u3001\u5e73\u5747\u6d41\u901f\u304c100\u500d\u306b\u306a\u308a\u3001\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u306f10\u500d\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u5c0f\u3055\u3044\u7ba1\u3068\u3044\u3046\u60c5\u5831\u3060\u3051\u3067\u5c64\u6d41\u3084\u6df7\u5408\u306e\u826f\u3055\u306f\u5224\u65ad\u3067\u304d\u307e\u305b\u3093\u3002\u4f55\u3092\u4e00\u5b9a\u306b\u3057\u305f\u6bd4\u8f03\u304b\u3001\u6db2\u4f53\u306e\u6027\u8cea\u3084\u5165\u53e3\u30fb\u5f62\u72b6\u306e\u6761\u4ef6\u307e\u3067\u78ba\u304b\u3081\u308b\u3053\u3068\u304c\u5927\u5207\u3067\u3059\u3002<\/li>\n<\/ul>\n<\/section>\n<h2>\u6163\u6027\u3068\u7c98\u6027\u3092\u3001\u540c\u3058\u7269\u5dee\u3057\u3067\u6bd4\u3079\u308b<\/h2>\n<p>\u6163\u6027\u306f\u3001\u6d41\u308c\u3066\u3044\u308b\u6db2\u4f53\u306e\u904b\u52d5\u304c\u4fdd\u305f\u308c\u3088\u3046\u3068\u3059\u308b\u6027\u8cea\u3067\u3059\u3002\u7c98\u6027\u306f\u3001\u96a3\u308a\u5408\u3046\u5834\u6240\u306e\u6d41\u901f\u306b\u5dee\u304c\u3042\u308b\u3068\u304d\u3001\u305d\u306e\u5dee\u3092\u306a\u3089\u3059\u3088\u3046\u306b\u529b\u304c\u50cd\u304f\u6027\u8cea\u3067\u3059\u3002\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u306f\u3001\u3053\u306e2\u3064\u306e\u52b9\u679c\u306e\u5927\u304d\u3055\u3092\u4ee3\u8868\u7684\u306a\u9577\u3055\u3068\u901f\u3055\u3067\u898b\u7a4d\u3082\u308a\u3001\u305d\u306e\u6bd4\u3092\u53d6\u3063\u305f\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u6db2\u4f53\u3067\u6e80\u305f\u3055\u308c\u305f\u5186\u7ba1\u3092\u8003\u3048\u3001\u5185\u5f84\u3092D\u3001\u65ad\u9762\u306e\u5e73\u5747\u6d41\u901f\u3092U\u3001\u5bc6\u5ea6\u3092\u03c1\u3001\u7c98\u5ea6\u3092\u03bc\u3068\u3059\u308b\u3068\u3001Re\uff1d\u03c1UD\/\u03bc\u3067\u3059\u3002\u7c98\u5ea6\u3092\u5bc6\u5ea6\u3067\u5272\u3063\u305f\u91cf\u03bd\uff1d\u03bc\/\u03c1\u3092\u300c\u52d5\u7c98\u5ea6\u300d\u3068\u547c\u3073\u3001\u3053\u308c\u3092\u4f7f\u3048\u3070Re\uff1dUD\/\u03bd\u3068\u66f8\u3051\u307e\u3059\u3002U\u3092m\/s\u3001D\u3092m\u3001\u03bd\u3092m\u00b2\/s\u306b\u305d\u308d\u3048\u308b\u3068\u5358\u4f4d\u304c\u6d88\u3048\u308b\u306e\u3067\u3001Re\u306f\u5358\u4f4d\u3092\u6301\u305f\u306a\u3044\u6570\u3067\u3059\u3002[1][3]<\/p>\n<p>Re\u304c\u5c0f\u3055\u304f\u306a\u308b\u307b\u3069\u3001\u540c\u3058\u6bd4\u8f03\u306e\u4e2d\u3067\u306f\u6163\u6027\u306b\u5bfe\u3059\u308b\u7c98\u6027\u306e\u5f71\u97ff\u304c\u5f37\u307e\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001Re\u304c\u5927\u304d\u3051\u308c\u3070\u7c98\u6027\u304c\u306a\u304f\u306a\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u4f4e\u3044Re\u304b\u3089\u9ad8\u3044Re\u3078\u306e\u5909\u5316\u3092\u3001\u305d\u306e\u307e\u307e\u300c\u5c64\u6d41\u304b\u3089\u4e71\u6d41\u3078\u5909\u308f\u3063\u305f\u300d\u3068\u8aad\u307f\u66ff\u3048\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<h2>\u300c\u6d41\u901f\u304c\u540c\u3058\u300d\u3068\u300c\u6d41\u91cf\u304c\u540c\u3058\u300d\u306f\u9055\u3046<\/h2>\n<p>\u6d41\u901f\u306f\u3001\u6db2\u4f53\u304c\u9032\u3080\u901f\u3055\u3067\u3059\u3002\u6d41\u91cfQ\u306f\u3001\u3042\u308b\u65ad\u9762\u3092\u5358\u4f4d\u6642\u9593\u306b\u901a\u308a\u629c\u3051\u308b\u4f53\u7a4d\u3067\u3001m\u00b3\/s\u3084mL\/min\u3067\u8868\u3057\u307e\u3059\u3002\u65ad\u9762\u7a4d\u3092A\u3068\u3059\u308b\u3068Q\uff1dAU\u3067\u3059\u3002\u3053\u3053\u3067U\u3092\u65ad\u9762\u306e\u5e73\u5747\u6d41\u901f\u3068\u3059\u308c\u3070\u3001\u4e2d\u5fc3\u3068\u58c1\u969b\u3067\u901f\u3055\u304c\u9055\u3063\u3066\u3044\u3066\u3082\u3001\u3053\u306e\u95a2\u4fc2\u3092\u4f7f\u3048\u307e\u3059\u3002[2]<\/p>\n<p>\u5186\u7ba1\u306e\u65ad\u9762\u7a4d\u306fA\uff1d\u03c0D\u00b2\/4\u3067\u3059\u3002\u7ba1\u5f84\u309210\u5206\u306e1\u306b\u3059\u308b\u3068\u3001\u65ad\u9762\u7a4d\u306f100\u5206\u306e1\u306b\u306a\u308a\u307e\u3059\u3002\u540c\u3058\u6d41\u91cf\u3092\u901a\u3059\u306b\u306f\u3001\u305d\u306e\u5c0f\u3055\u306a\u65ad\u9762\u3092100\u500d\u306e\u5e73\u5747\u6d41\u901f\u3067\u901a\u904e\u3055\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u95a2\u4fc2\u3092Re\uff1dUD\/\u03bd\u306b\u4ee3\u5165\u3059\u308b\u3068\u3001Re\uff1d4Q\/(\u03c0\u03bdD)\u306b\u306a\u308a\u307e\u3059\u3002U\u3092\u56fa\u5b9a\u3057\u305f\u5f0f\u3067\u306fRe\u306fD\u306b\u6bd4\u4f8b\u3057\u307e\u3059\u304c\u3001Q\u3092\u56fa\u5b9a\u3057\u305f\u5f0f\u3067\u306fD\u306b\u53cd\u6bd4\u4f8b\u3057\u307e\u3059\u3002\u3069\u3061\u3089\u3082\u540c\u3058\u5b9a\u7fa9\u3067\u3001\u5909\u3048\u3066\u3088\u3044\u91cf\u3068\u4e00\u5b9a\u306b\u3059\u308b\u91cf\u304c\u9055\u3046\u3060\u3051\u3067\u3059\u3002<\/p>\n<h2>\u7ba1\u5f84\u309210\u5206\u306e1\u306b\u3059\u308b\u30012\u901a\u308a\u306e\u6bd4\u8f03<\/h2>\n<p>\u52d5\u7c98\u5ea6\u3092\u03bd\uff1d1.0\u00d710<sup>\u22126<\/sup>m\u00b2\/s\u3068\u4eee\u5b9a\u3057\u3001\u5185\u5f841mm\u306e\u7ba1\u30680.1mm\u306e\u7ba1\u3092\u6bd4\u3079\u307e\u3059\u3002\u7279\u5b9a\u306e\u6db2\u4f53\u3092\u6e2c\u5b9a\u3057\u305f\u7d50\u679c\u3067\u306f\u306a\u304f\u3001\u6761\u4ef6\u306e\u9055\u3044\u3092\u793a\u3059\u305f\u3081\u306e\u6570\u5024\u4f8b\u3067\u3059\u3002\u5bc6\u5ea6\u3068\u7c98\u5ea6\u304c\u4e00\u5b9a\u306e\u3001\u5727\u7e2e\u306b\u3088\u308b\u4f53\u7a4d\u5909\u5316\u3092\u7121\u8996\u3067\u304d\u308b\u30cb\u30e5\u30fc\u30c8\u30f3\u6d41\u4f53\u3092\u5bfe\u8c61\u3068\u3057\u307e\u3059\u3002<\/p>\n<div style=\"overflow-x:auto\">\n<table style=\"border-collapse:collapse;width:100%;min-width:580px\">\n<thead>\n<tr>\n<th style=\"padding:10px;border:1px solid #ccd6d6\">\u6bd4\u8f03\u6761\u4ef6<\/th>\n<th style=\"padding:10px;border:1px solid #ccd6d6\">\u5185\u5f84D<\/th>\n<th style=\"padding:10px;border:1px solid #ccd6d6\">\u5e73\u5747\u6d41\u901fU<\/th>\n<th style=\"padding:10px;border:1px solid #ccd6d6\">\u6d41\u91cfQ<\/th>\n<th style=\"padding:10px;border:1px solid #ccd6d6\">Re<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">\u5e73\u5747\u6d41\u901f\u3092\u56fa\u5b9a<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">1mm<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">0.010m\/s<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">\u7d040.471mL\/min<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">10<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">\u5e73\u5747\u6d41\u901f\u3092\u56fa\u5b9a<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">0.1mm<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">0.010m\/s<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">\u7d040.00471mL\/min<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">1<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">\u6d41\u91cf\u3092\u56fa\u5b9a<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">1mm<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">\u7d040.0212m\/s<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">1.00mL\/min<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">\u7d0421.2<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">\u6d41\u91cf\u3092\u56fa\u5b9a<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">0.1mm<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">\u7d042.12m\/s<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">1.00mL\/min<\/td>\n<td style=\"padding:10px;border:1px solid #ccd6d6\">\u7d04212<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u4e0a\u306e2\u884c\u3067\u306f\u3001\u7ba1\u5f84\u3092\u5c0f\u3055\u304f\u3057\u305f\u5206\u3060\u3051Re\u304c\u4e0b\u304c\u308a\u307e\u3059\u304c\u3001\u9001\u308a\u51fa\u305b\u308b\u4f53\u7a4d\u3082\u6bce\u5206100\u5206\u306e1\u306b\u306a\u308a\u307e\u3059\u3002\u4e0b\u306e2\u884c\u3067\u306f\u3001\u6bce\u52061mL\u3068\u3044\u3046\u51e6\u7406\u91cf\u3092\u4fdd\u3063\u305f\u305f\u3081\u3001\u5e73\u5747\u6d41\u901f\u304c\u5927\u304d\u304f\u306a\u308a\u3001Re\u306f\u4e0a\u304c\u308a\u307e\u3059\u3002\u7ba1\u306e\u5c0f\u578b\u5316\u3068\u51e6\u7406\u91cf\u306e\u7dad\u6301\u3092\u540c\u6642\u306b\u8003\u3048\u308b\u3068\u304d\u3001\u3053\u306e\u9055\u3044\u304c\u52b9\u3044\u3066\u304d\u307e\u3059\u3002<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-reynolds-diameter-flow-20261024-figure-dc35df4d30e0.png\" alt=\"\u5185\u5f84\u30921\u30df\u30ea\u30e1\u30fc\u30c8\u30eb\u304b\u30890.1\u30df\u30ea\u30e1\u30fc\u30c8\u30eb\u3078\u7e2e\u3081\u308b\u6bd4\u8f03\u3002\u5e73\u5747\u6d41\u901f\u30920.010\u30e1\u30fc\u30c8\u30eb\u6bce\u79d2\u306b\u56fa\u5b9a\u3059\u308b\u3068\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u306f10\u304b\u30891\u3078\u4f4e\u4e0b\u3057\u3001\u6d41\u91cf\u3092\u6bce\u52061\u30df\u30ea\u30ea\u30c3\u30c8\u30eb\u306b\u56fa\u5b9a\u3059\u308b\u3068\u7d0421.2\u304b\u3089212\u3078\u5897\u52a0\u3059\u308b\u3002\" style=\"max-width:100%;height:auto\"\/><figcaption>\u52d5\u7c98\u5ea6\u30921.0\u00d710\u207b\u2076m\u00b2\/s\u3068\u3057\u305f\u72ec\u81ea\u8a08\u7b97\u3002\u4e0a\u4e0b\u306f\u305d\u308c\u305e\u308c\u5225\u306e\u904b\u8ee2\u6761\u4ef6\u3067\u3001\u540c\u3058\u30dd\u30f3\u30d7\u5727\u529b\u3067\u306e\u6bd4\u8f03\u3067\u306f\u306a\u3044\u3002\u6570\u5b57\u306e\u5897\u6e1b\u306f\u4e71\u6d41\u3078\u306e\u9077\u79fb\u3092\u8868\u3057\u3066\u3044\u306a\u3044\u3002<\/figcaption><\/figure>\n<p>\u305f\u3068\u3048\u3070\u3001\u5c0f\u578b\u306e\u6d41\u8def\u3078\u540c\u3058\u6bce\u5206\u6d41\u91cf\u3092\u9001\u308b\u8a2d\u8a08\u306a\u3089\u3001\u300c\u7ba1\u304c\u7d30\u304f\u306a\u3063\u305f\u304b\u3089Re\u3082\u4e0b\u304c\u308b\u300d\u3068\u306f\u898b\u8fbc\u3081\u307e\u305b\u3093\u3002\u9006\u306b\u3001\u5e73\u5747\u6d41\u901f\u3092\u636e\u3048\u7f6e\u304f\u6bd4\u8f03\u3067\u306f\u3001Re\u304c\u4e0b\u304c\u3063\u305f\u3053\u3068\u3068\u5f15\u304d\u63db\u3048\u306b\u51e6\u7406\u91cf\u304c\u3069\u308c\u3060\u3051\u6e1b\u3063\u305f\u304b\u3092\u4f75\u8a18\u3059\u308b\u3068\u3001\u88c5\u7f6e\u306e\u5229\u70b9\u3068\u5236\u7d04\u3092\u8aad\u307f\u9055\u3048\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u540c\u3058\u30dd\u30f3\u30d7\u306a\u3089\u3001\u4f55\u304c\u4e00\u5b9a\u306b\u306a\u308b\u306e\u304b<\/h2>\n<p>\u5b9f\u969b\u306e\u88c5\u7f6e\u3067\u306f\u3001\u7ba1\u3092\u4ea4\u63db\u3057\u3066\u3082\u540c\u3058Q\u304c\u81ea\u52d5\u7684\u306b\u4fdd\u305f\u308c\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u6d41\u91cf\u306f\u7ba1\u306e\u62b5\u6297\u3068\u5727\u529b\u5dee\u3001\u30dd\u30f3\u30d7\u3084\u5236\u5fa1\u306e\u7279\u6027\u3067\u6c7a\u307e\u308b\u305f\u3081\u3067\u3059\u3002\u4e0a\u306e\u300c\u6d41\u91cf\u3092\u56fa\u5b9a\u300d\u306f\u3001\u5fc5\u8981\u306a\u5727\u529b\u3092\u4f9b\u7d66\u3057\u3066Q\u3092\u4fdd\u3066\u308b\u3068\u3044\u3046\u6bd4\u8f03\u6761\u4ef6\u3092\u7f6e\u3044\u3066\u3044\u307e\u3059\u3002[3]<\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u6bd4\u8f03\u306e\u524d\u306b\u300c\u6d41\u91cf\u3092\u5236\u5fa1\u3057\u3066\u3044\u308b\u300d\u300c\u5e73\u5747\u6d41\u901f\u3092\u5408\u308f\u305b\u305f\u300d\u300c\u5727\u529b\u5dee\u3092\u540c\u3058\u306b\u3057\u305f\u300d\u306e\u3069\u308c\u306b\u5f53\u305f\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u5727\u529b\u5dee\u3092\u56fa\u5b9a\u3059\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u6761\u4ef6\u304b\u3089\u5909\u5316\u5f8c\u306eQ\u3092\u6c42\u3081\u3001\u6539\u3081\u3066Re\u3092\u8a08\u7b97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4e0a\u306e\u8868\u306f\u5727\u529b\u640d\u5931\u3084\u30dd\u30f3\u30d7\u306e\u5fc5\u8981\u80fd\u529b\u3092\u8a08\u7b97\u3057\u305f\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h2>\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u3060\u3051\u3067\u6c7a\u3081\u306a\u3044\u3053\u3068<\/h2>\n<p>\u5c64\u6d41\u306f\u6d41\u308c\u304c\u6574\u3063\u305f\u5c64\u72b6\u306b\u306a\u308b\u72b6\u614b\u3001\u4e71\u6d41\u306f\u901f\u5ea6\u304c\u4e0d\u898f\u5247\u306b\u5909\u52d5\u3057\u6e26\u3092\u4f34\u3046\u72b6\u614b\u3067\u3059\u3002Re\u306f\u3053\u306e\u6d41\u308c\u65b9\u3092\u6574\u7406\u3059\u308b\u91cd\u8981\u306a\u6307\u6a19\u3067\u3059\u304c\u3001\u9077\u79fb\u306b\u306f\u5165\u53e3\u306e\u4e71\u308c\u3001\u7ba1\u306e\u5f62\u72b6\u3084\u58c1\u306e\u72b6\u614b\u306a\u3069\u3082\u95a2\u4fc2\u3057\u307e\u3059\u3002\u3042\u308b\u5f62\u72b6\u306b\u4f7f\u3046\u5883\u754c\u5024\u3092\u3001\u5225\u306e\u6d41\u8def\u3078\u305d\u306e\u307e\u307e\u79fb\u3059\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u672c\u7a3f\u306e\u6570\u5024\u4f8b\u306fRe\u306e\u5897\u6e1b\u3092\u793a\u3057\u3066\u304a\u308a\u3001\u4e71\u6d41\u3092\u5b9f\u8a3c\u3059\u308b\u4f8b\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002[3]<\/p>\n<p>\u6bd4\u8f03\u3059\u308b\u8cc7\u6599\u540c\u58eb\u3067\u3001\u4ee3\u8868\u9577\u3055\u3084\u6d41\u901f\u306e\u5b9a\u7fa9\u304c\u540c\u3058\u304b\u3082\u78ba\u8a8d\u3057\u307e\u3059\u3002\u5186\u7ba1\u306e\u5185\u5f84\u3068\u65ad\u9762\u5e73\u5747\u6d41\u901f\u3067\u6c42\u3081\u305fRe\u306b\u3001\u5225\u306e\u9577\u3055\u3084\u4e2d\u5fc3\u306e\u6700\u5927\u6d41\u901f\u3067\u6c42\u3081\u305fRe\u3092\u6df7\u305c\u308b\u3068\u3001\u540c\u3058\u5024\u3067\u3082\u610f\u5473\u304c\u305a\u308c\u307e\u3059\u3002\u6e29\u5ea6\u3067\u7c98\u5ea6\u304c\u5909\u308f\u308b\u5834\u5408\u306b\u306f\u3001\u52d5\u7c98\u5ea6\u3082\u305d\u306e\u6761\u4ef6\u306b\u5408\u308f\u305b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u307e\u305f\u3001\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u304c\u6bd4\u3079\u308b\u306e\u306f\u6163\u6027\u3068\u7c98\u6027\u3067\u3059\u3002\u6eb6\u8cea\u306e\u6fc3\u5ea6\u304c\u3069\u308c\u307b\u3069\u5747\u4e00\u304b\u306f\u3001\u5206\u5b50\u62e1\u6563\u3084\u6ede\u5728\u6642\u9593\u306a\u3069\u3082\u542b\u3080\u5225\u306e\u554f\u984c\u3067\u3059\u3002\u5fae\u7d30\u306a\u6d41\u8def\u3092\u9078\u3076\u969b\u306f\u3001\u7ba1\u5f84\u3001\u4f55\u3092\u4e00\u5b9a\u306b\u3059\u308b\u304b\u3001\u52d5\u7c98\u5ea6\u3001\u5fc5\u8981\u306a\u51e6\u7406\u91cf\u3092\u4e00\u7d44\u306b\u3057\u3066\u8aad\u307f\u3001\u305d\u306e\u5f8c\u306b\u6d41\u308c\u65b9\u3084\u6df7\u5408\u306e\u8a55\u4fa1\u3078\u9032\u3080\u3068\u3001\u5224\u65ad\u306e\u7b4b\u9053\u304c\u660e\u78ba\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u51fa\u5178<\/h2>\n<ul>\n<li>[1] NASA Glenn Research Center, <a href=\"https:\/\/www.grc.nasa.gov\/WWW\/k-12\/airplane\/reynolds.html\">Reynolds Number<\/a>\u3002\u6163\u6027\u3068\u7c98\u6027\u306e\u6bd4\u3001\u52d5\u7c98\u5ea6\u3001\u7121\u6b21\u5143\u5316\u3092\u53c2\u7167\u3002<\/li>\n<li>[2] OpenStax, University Physics Volume 1, <a href=\"https:\/\/openstax.org\/books\/university-physics-volume-1\/pages\/14-5-fluid-dynamics\">14.5 Fluid Dynamics<\/a>\u3002\u5f0f14.13\u3001\u6d41\u91cf\u3068\u65ad\u9762\u7a4d\u30fb\u6d41\u901f\u306e\u95a2\u4fc2\u3092\u53c2\u7167\u3002<\/li>\n<li>[3] OpenStax, University Physics Volume 1, <a href=\"https:\/\/openstax.org\/books\/university-physics-volume-1\/pages\/14-7-viscosity-and-turbulence\">14.7 Viscosity and Turbulence<\/a>\u3002\u7c98\u6027\u3001\u7ba1\u5185\u306e\u901f\u5ea6\u5206\u5e03\u3001\u5727\u529b\u5dee\u3068\u6d41\u91cf\u3001\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u306e\u8aac\u660e\u3092\u53c2\u7167\u3002\u6570\u5024\u4f8b\u3068\u6bd4\u8f03\u56f3\u306f\u672c\u7a3f\u3067\u8a2d\u5b9a\u3057\u305f\u6761\u4ef6\u306b\u3088\u308b\u72ec\u81ea\u8a08\u7b97\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u6db2\u4f53\u3092\u6d41\u3059\u7ba1\u3092\u7d30\u304f\u3059\u308c\u3070\u3001\u6d41\u308c\u306f\u7a4f\u3084\u304b\u306b\u306a\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u5c0f\u3055\u306a\u6d41\u8def\u3067\u306f\u7c98\u6027\u306e\u5f71\u97ff\u304c\u76ee\u7acb\u3061\u3084\u3059\u3044\u3082\u306e\u306e\u3001\u7ba1\u5f84\u3060\u3051\u3067\u306f\u6c7a\u307e\u308a\u307e\u305b\u3093\u3002\u540c\u3058\u901f\u3055\u3067\u6d41\u3059\u306e\u304b\u3001\u540c\u3058\u91cf\u3092\u6bce\u5206\u9001\u308a\u8fbc\u3080\u306e\u304b\u306b\u3088\u3063\u3066\u3001\u7d30\u304f\u3057\u305f\u3068\u304d\u306e\u5909\u5316\u306f\u9006\u306b\u306a\u308a\u307e\u3059\u3002\u305d [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1544,"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":[311],"class_list":["post-1546","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-materials-manufacturing","tag-reynolds-number"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-reynolds-diameter-flow-20261024-featured-846a9f385b94.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1546","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=1546"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1546\/revisions"}],"predecessor-version":[{"id":1547,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1546\/revisions\/1547"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/1544"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1546"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1546"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1546"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}