{"id":16947,"date":"2025-06-16T14:00:23","date_gmt":"2025-06-16T05:00:23","guid":{"rendered":"https:\/\/www.ecomottblog.com\/?p=16947"},"modified":"2025-06-16T13:36:45","modified_gmt":"2025-06-16T04:36:45","slug":"pinn%e5%9e%8b%e3%83%8b%e3%83%a5%e3%83%bc%e3%83%a9%e3%83%ab%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e3%82%92%e7%94%a8%e3%81%84%e3%81%9f%e3%82%ab%e3%83%ab%e3%83%9e%e3%83%b3%e6%b8%a6","status":"publish","type":"post","link":"https:\/\/www.ecomottblog.com\/?p=16947","title":{"rendered":"PINN\u578b\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u7528\u3044\u305f\u30ab\u30eb\u30de\u30f3\u6e26\u3092\u4f34\u3046\u6d41\u308c\u306e\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-17570 alignright\" src=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/intro.png\" alt=\"\" width=\"279\" height=\"281\" 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loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17577\" src=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_1-2.png\" alt=\"\" width=\"557\" height=\"350\" srcset=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_1-2.png 557w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_1-2-300x189.png 300w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_1-2-304x191.png 304w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_1-2-282x177.png 282w\" sizes=\"(max-width: 557px) 100vw, 557px\" \/><br 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\/>\n\u3057\u304b\u3057\u3001\u3053\u308c\u3089\u306e\u65b9\u7a0b\u5f0f\u306b\u767b\u5834\u3059\u308b\u7269\u7406\u91cf\uff08\u8ddd\u96e2\u3001\u901f\u5ea6\u3001\u5727\u529b\u3001\u6642\u9593\u306a\u3069\uff09\u306f\u3059\u3079\u3066\u7121\u6b21\u5143\u5316\u3055\u308c\u3066\u304a\u308a\u3001\u5358\u4f4d\u3092\u6301\u3061\u307e\u305b\u3093\u3002\u3053\u306e\u51e6\u7406\u306b\u3088\u3063\u3066\u3001\u65b9\u7a0b\u5f0f\u306f\u3088\u308a\u4e00\u822c\u7684\u306a\u5f62\u3068\u306a\u308a\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u89e3\u6790\u306b\u304a\u3044\u3066\u6271\u3044\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<br \/>\n\u307e\u305f\u3001\u30ca\u30d3\u30a8\u2013\u30b9\u30c8\u30fc\u30af\u30b9\u65b9\u7a0b\u5f0f\u306b\u73fe\u308c\u308b\u91cd\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\u306e1\u3064\u306b\u300c\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u300d\u304c\u3042\u308a\u3001\u3053\u308c\u3082\u7121\u6b21\u5143\u91cf\u3067\u3059\u3002\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\u306f\u6d41\u308c\u306e\u6027\u8cea\uff08\u4f8b\u3048\u3070\u5c64\u6d41\u304b\u4e71\u6d41\u304b\uff09\u3092\u8868\u3057\u307e\u3059\u3002<br \/>\n\u3053\u306e\u30d6\u30ed\u30b0\u306e\u4ee5\u964d\u306e\u90e8\u5206\u3067\u306f\u3001\u3059\u3079\u3066\u306e\u91cf\u306f\u3053\u306e\u7121\u6b21\u5143\u5f62\u5f0f\u3067\u8868\u8a18\u3055\u308c\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17579\" src=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_2.png\" alt=\"\" width=\"554\" height=\"292\" srcset=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_2.png 554w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_2-300x158.png 300w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_2-304x160.png 304w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_2-282x149.png 282w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/p>\n<p>\u56f32\uff0e2\u6b21\u5143\u7121\u6b21\u5143\u30ca\u30d3\u30a8\u2013\u30b9\u30c8\u30fc\u30af\u30b9\u65b9\u7a0b\u5f0f\u304a\u3088\u3073\u9023\u7d9a\u306e\u5f0f\u3002\u8a18\u53f7\u306e\u8aac\u660e\uff1au,v\u306f\u305d\u308c\u305e\u308c x,y \u65b9\u5411\u306e\u7121\u6b21\u5143\u901f\u5ea6\u3001p \u306f\u7121\u6b21\u5143\u5727\u529b\u3001x,y \u306f\u7121\u6b21\u5143\u5ea7\u6a19\u3001t \u306f\u7121\u6b21\u5143\u6642\u9593\u3001D \u306f\u7279\u6027\u9577\u3055\uff08\u4ee3\u8868\u7684\u306a\u7269\u7406\u7684\u5bf8\u6cd5\uff09\u3001U\u306f\u7279\u6027\u901f\u5ea6\uff08\u4ee3\u8868\u7684\u306a\u901f\u5ea6\u30b9\u30b1\u30fc\u30eb\uff09\u3001\u03c1 \u306f\u6d41\u4f53\u306e\u5bc6\u5ea6\u3001\u03bc \u306f\u6d41\u4f53\u306e\u7c98\u6027\u4fc2\u6570\uff08\u52d5\u7c98\u6027\uff09\u3001Re \uff08\u30ec\u30a4\u30ce\u30eb\u30ba\u6570\uff09\u306f\u6163\u6027\u529b\u3068\u7c98\u6027\u529b\u306e\u6bd4\u3092\u8868\u3059\u7121\u6b21\u5143\u6570\u3002\u3053\u3053\u3067\u6dfb\u5b57 dim \u306f\u6b21\u5143\u3092\u6301\u3064\u7269\u7406\u91cf\u3092\u793a\u3059\u3002<\/p>\n<h2>PINN\u3092\u7528\u3044\u305f\u6d41\u308c\u306e\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u5b9f\u65bd\u624b\u9806<\/h2>\n<p>\u3053\u306e\u30d6\u30ed\u30b0\u3067\u7d39\u4ecb\u3059\u308bPINN\u306e\u5b66\u7fd2\u3068\u30c6\u30b9\u30c8\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u30014\u3064\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\uff08\u56f33\u53c2\u7167\uff09\uff1a<br \/>\n\u53c2\u7167\u30c7\u30fc\u30bf\u306e\u4f5c\u6210\u3001\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u30c7\u30fc\u30bf\u306e\u9078\u5b9a\u3001\u30e2\u30c7\u30eb\u306e\u5b66\u7fd2\u3001\u305d\u3057\u3066\u305d\u306e\u6027\u80fd\u306e\u8a55\u4fa1\u3067\u3059\u3002<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17582\" src=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_3.png\" alt=\"\" width=\"773\" height=\"186\" srcset=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_3.png 773w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_3-300x72.png 300w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_3-768x185.png 768w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_3-304x73.png 304w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig_3-282x68.png 282w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><br \/>\n\u56f33\uff0e\u30c7\u30fc\u30bf\u4f5c\u6210\u3001\u5b66\u7fd2\u7528\u30c7\u30fc\u30bf\u306e\u9078\u5b9a\u3001\u30e2\u30c7\u30eb\u306e\u5b66\u7fd2\u3001\u8a55\u4fa1\u306e4\u6bb5\u968e\u3067\u69cb\u6210\u3055\u308c\u308bPINN\u306e\u5b66\u7fd2\u3068\u691c\u8a3c\u306e\u30d7\u30ed\u30bb\u30b9\u3002<\/p>\n<h3>\u30b9\u30c6\u30c3\u30d71\uff1a\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u6e96\u5099 \u2014 \u53c2\u7167\u30c7\u30fc\u30bf\uff08GT\uff1a\u30b0\u30e9\u30a6\u30f3\u30c9\u30c8\u30a5\u30eb\u30fc\u30b9\uff09<\/h3>\n<p>\u5b9f\u9a13\u30c7\u30fc\u30bf\u304c\u5165\u624b\u3067\u304d\u306a\u304b\u3063\u305f\u305f\u3081\u3001PINN\u306e\u5b66\u7fd2\u306b\u306f\u3001\u4e8b\u524d\u306b\u884c\u308f\u308c\u305f\u30ab\u30eb\u30de\u30f3\u6e26\u3092\u542b\u3080\u6d41\u4f53\u306e\u6570\u5024\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u7d50\u679c\u3092\u4f7f\u7528\u3057\u307e\u3057\u305f\u3002<br \/>\n\u3053\u306e\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u7528\u3044\u305a\u3001\u5f93\u6765\u306e\u6570\u5024\u6d41\u4f53\u529b\u5b66\uff08CFD\uff09\u306e\u624b\u6cd5\u306b\u3088\u3063\u3066\u5b9f\u884c\u3055\u308c\u307e\u3057\u305f\u3002\u4f7f\u7528\u3055\u308c\u305f\u30b3\u30fc\u30c9\u306f<a href=\"https:\/\/qiita.com\/umigamek\/items\/a02d99ae3c1debf26fcd\">\u300cPython\u3067Navier-Stokes\u65b9\u7a0b\u5f0f\u3092\u89e3\u3044\u3066\u30ab\u30eb\u30de\u30f3\u6e26\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3059\u308b\u300d<\/a>\u306eQiita\u30d6\u30ed\u30b0\u304b\u3089\u306e\u3082\u306e\u3067\u3059\u3002\uff08\u611f\u8b1d\uff09<\/p>\n<p>\u3053\u306e\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\uff08\u30ec\u30a4\u30ce\u30eb\u30ba\u6570 Re = 100 \u306b\u3066\u5b9f\u65bd\uff09\u306f\u3001\u6642\u523b t = 0 \u304b\u3089 t = 100 \u306b\u304b\u3051\u3066\u6d41\u4f53\u306e\u6319\u52d5\u304c\u3069\u306e\u3088\u3046\u306b\u5909\u5316\u3059\u308b\u304b\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u521d\u671f\u72b6\u614b\uff08t = 0\uff09\u3067\u306f\u6d41\u4f53\u306f\u9759\u6b62\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u6d41\u901f\u304c\u5897\u52a0\u3057\u3001\u7279\u5fb4\u7684\u306a\u30ab\u30eb\u30de\u30f3\u6e26\u304c\u73fe\u308c\u307e\u3059\u3002<\/p>\n<p>\u3064\u307e\u308a\u3001\u6d41\u308c\u306f\u521d\u671f\u6bb5\u968e\u3068\u5f8c\u306e\u6bb5\u968e\u3067\u7570\u306a\u308a\u307e\u3059\u3002\u6700\u521d\u306f\u300c\u7acb\u3061\u4e0a\u304c\u308a\uff08\u9077\u79fb\uff09\u300d\u304c\u3042\u308a\u3001\u305d\u306e\u5f8c\u306b\u6e26\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001PINN\u306e\u5b66\u7fd2\u306b\u4f7f\u7528\u3059\u308b\u30c7\u30fc\u30bf\u306e\u4e00\u8cab\u6027\u3092\u4fdd\u3064\u305f\u3081\u306b\u3001\u5b8c\u5168\u306b\u6e26\u304c\u767a\u9054\u3057\u305f\u5f8c\u306e\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u90e8\u5206\u306e\u307f\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002\u5177\u4f53\u7684\u306b\u306f\u3001\u6642\u523b t = 50 \u4ee5\u964d\u306e\u30c7\u30fc\u30bf\u3092\u7528\u3044\u307e\u3057\u305f\u3002<\/p>\n<p>\u6570\u5024\u8a08\u7b97\u306e\u7d50\u679c\u3001\u7a7a\u9593\uff08x, y\uff09\u306e5551\u5730\u70b9\u3067\u3001\u6642\u9593\uff08t\uff09\u3068\u3068\u3082\u306b\u5909\u5316\u3059\u308b\u6d41\u4f53\u306e\u901f\u5ea6\u3068\u5727\u529b\uff08u, v, p\uff09\u306e\u5024\u3092\u542b\u3080\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u304c\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u6642\u523b t = 50 \u304b\u3089 t = 100 \u307e\u3067\u306e1000\u30bf\u30a4\u30e0\u30b9\u30c6\u30c3\u30d7\u3067\u69cb\u6210\u3055\u308c\u3066\u304a\u308a\u3001\u5168\u4f53\u30675,551,000\u884c\u306e\u30c7\u30fc\u30bf\u304c\u5f97\u3089\u308c\u307e\u3057\u305f\u3002\u5404\u884c\u306f\u305d\u308c\u305e\u308c\u4e00\u610f\u306e\u5ea7\u6a19 (x, y, t) \u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002<br \/>\n\u3053\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306f\u6d41\u308c\u306e\u5168\u4f53\u7684\u306a\u6319\u52d5\u3092\u8a73\u7d30\u306b\u8a18\u8ff0\u3057\u3066\u304a\u308a\u3001PINN\u30e2\u30c7\u30eb\u306e\u51fa\u529b\u3068\u6bd4\u8f03\u3059\u308b\u305f\u3081\u306e\u57fa\u6e96\uff08\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9\uff09\u3068\u3057\u3066\u6271\u308f\u308c\u307e\u3059\u3002\u3053\u306e\u30d6\u30ed\u30b0\u3067\u306f\u3001\u3053\u306e\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u300cGT\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\uff08Ground Truth\uff09\u300d\u3068\u547c\u3076\u3053\u3068\u306b\u3057\u307e\u3059\u3002<\/p>\n<h3>\u30b9\u30c6\u30c3\u30d72\uff1a\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u30c7\u30fc\u30bf\u306e\u9078\u5b9a<\/h3>\n<p>\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u3067\u306f\u3001GT\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u7528\u3044\u3066\u5b66\u7fd2\u7528\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u6e96\u5099\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u306f\u30012\u3064\u306e\u65b9\u6cd5\u3067\u751f\u6210\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p><strong>\u300c\u30e9\u30f3\u30c0\u30e0\u300d<\/strong> \u65b9\u5f0f \u2014 \u5168\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u304b\u3089\u30e9\u30f3\u30c0\u30e0\u306b\u6307\u5b9a\u6570\u306e\u884c\u3092\u9078\u3073\u3001\u305d\u308c\u3092PINN\u306e\u5b66\u7fd2\u306b\u4f7f\u7528\u3057\u307e\u3057\u305f\u3002\u4ee5\u4e0b\u306e3\u7a2e\u985e\u306e\u30b5\u30a4\u30ba\u306e\u5b66\u7fd2\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u304c\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\uff1a<\/p>\n<p style=\"text-align: center;\">27,755\u884c\uff08GT\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e0.25%\uff09<br \/>\n13,877\u884c\uff08GT\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e0.25%\uff09<br \/>\n6,938\u884c\uff08GT\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e0.125%\uff09<\/p>\n<p><strong>\u300c\u9078\u629e\u3055\u308c\u305f\u70b9\u304b\u3089\u306e\u62bd\u51fa\u300d<\/strong> \u65b9\u5f0f \u2014 \u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u9818\u57df\u5185\u306e\u7279\u5b9a\u306e\u70b9\u306b\u5bfe\u5fdc\u3059\u308b\u30c7\u30fc\u30bf\u306e\u307f\u3092\u9078\u629e\u3057\u307e\u3057\u305f\u3002\u56f34\u306b\u793a\u3055\u308c\u305f25\u306e\u5236\u5fa1\u70b9\u306b\u57fa\u3065\u3044\u3066\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u65b9\u6cd5\u3067\u5f97\u3089\u308c\u305f\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u30b5\u30a4\u30ba\u306f25,000\u884c\uff08GT\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e0.45%\uff09\u3067\u3057\u305f\u3002\u3053\u306e\u3088\u3046\u306a\u30c7\u30fc\u30bf\u306e\u9078\u3073\u65b9\u306f\u3001\u7279\u5b9a\u306e\u5834\u6240\u306b\u914d\u7f6e\u3055\u308c\u305f\u30bb\u30f3\u30b5\u30fc\u3067\u6d41\u308c\u60c5\u5831\u3092\u53d6\u5f97\u3059\u308b\u5b9f\u969b\u306e\u72b6\u6cc1\u306b\u76f8\u5f53\u3057\u307e\u3059\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-17584\" src=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig.-4.png\" alt=\"\" width=\"396\" height=\"285\" srcset=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig.-4.png 396w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig.-4-300x216.png 300w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig.-4-297x214.png 297w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig.-4-282x203.png 282w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><br \/>\n\u56f34. \u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u9818\u57df\u306b\u304a\u3051\u308b\u5236\u5fa1\u70b9\u306e\u914d\u7f6e\uff08\u300c\u9078\u629e\u3055\u308c\u305f\u70b9\u300d\u624b\u6cd5\uff09\u3002\u5404\u70b9\u306e\u5ea7\u6a19\u306f\u3001x_list\uff08x \u6210\u5206\uff09\u304a\u3088\u3073 y_list (y \u6210\u5206\uff09\u3068\u3057\u3066\u793a\u3055\u308c\u3066\u3044\u307e\u3059\uff1ax_list = [0.55, 2.25, 3.75, 6.25, 8.75]\u3001y_list = [0.55, 1.85, 3.05, 4.25, 5.55]\u3002\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306f\u3001\u56f3\u306b\u793a\u3055\u308c\u305f\u70b9\u306b\u304a\u3051\u308b\u6d41\u4f53\u306e\u901f\u5ea6\u6210\u5206\u3068\u5727\u529b\u306e\u5024\u3092\u57fa\u306b\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h3>\u30b9\u30c6\u30c3\u30d73\uff1a\u30e2\u30c7\u30eb\u306e\u5b66\u7fd2\uff08\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\uff09<\/h3>\n<p><strong>\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\uff08PINN\u3092\u542b\u3080\uff09\uff1a<\/strong><br \/>\n\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f4\u3064\u306e\u96a0\u308c\u5c64\u3067\u69cb\u6210\u3055\u308c\u3066\u304a\u308a\u3001\u305d\u308c\u305e\u308c\u306e\u5c64\u306b\u306f64\u500b\u306e\u30cb\u30e5\u30fc\u30ed\u30f3\u304c\u3042\u308a\u3001\u6d3b\u6027\u5316\u95a2\u6570\u3068\u3057\u3066Tanh\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<br \/>\n\u3053\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u3001\u7a7a\u9593\u5ea7\u6a19\u3068\u6642\u9593\uff08x, y, t \u2014 3\u3064\u306e\u5165\u529b\uff09\u3092\u3082\u3068\u306b\u3001\u6d41\u4f53\u306e\u901f\u5ea6\u3068\u5727\u529b\u306e\u5024\uff08u, v, p \u2014 3\u3064\u306e\u51fa\u529b\uff09\u3092\u4e88\u6e2c\u3057\u307e\u3059\u3002<\/p>\n<p><strong>\u640d\u5931\u95a2\u6570:<\/strong><br \/>\n\u640d\u5931\u95a2\u6570\u306f\u3001\u6b21\u306e\u5f0f\u306b\u57fa\u3065\u3044\u3066\u5b9a\u7fa9\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p style=\"text-align: center;\"><strong>Total_loss = lambda_1 \u00b7 pde_loss + lambda_2 \u00b7 data_loss<\/strong><\/p>\n<p>\u2022 pde_loss \u2013 PINN\u306b\u3088\u3063\u3066\u4e88\u6e2c\u3055\u308c\u305f\u901f\u5ea6\u304a\u3088\u3073\u5727\u529b\u304c\u3001\u30ca\u30d3\u30a8\u2013\u30b9\u30c8\u30fc\u30af\u30b9\u65b9\u7a0b\u5f0f\u304a\u3088\u3073\u9023\u7d9a\u306e\u5f0f\u3092\u5b8c\u5168\u306b\u306f\u6e80\u305f\u3057\u3066\u3044\u306a\u3044\u3053\u3068\u306b\u3088\u308b\u640d\u5931\u9805\u3002<br \/>\n\u2022 data_loss \u2013 PINN\u306b\u3088\u308b\u4e88\u6e2c\u5024\u3068\u3001\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u30c7\u30fc\u30bf\u4e2d\u306e\u5bfe\u5fdc\u3059\u308b\u901f\u5ea6\u304a\u3088\u3073\u5727\u529b\u306e\u5024\u3068\u306e\u5dee\u306b\u57fa\u3065\u304f\u640d\u5931\u9805\u3002<br \/>\nPINN\u3092\u7528\u3044\u305f\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001lambda_1 = 1 \u304a\u3088\u3073 lambda_2 = 1 \u306e\u5024\u304c\u4f7f\u7528\u3055\u308c\u307e\u3057\u305f\u3002<br \/>\n\u6bd4\u8f03\u306e\u305f\u3081\u306b\u3001lambda_1 = 0 \u306e\u30b1\u30fc\u30b9\u3067\u3082\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u304c\u884c\u308f\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u3001\u6d41\u308c\u3092\u8a18\u8ff0\u3059\u308b\u7269\u7406\u65b9\u7a0b\u5f0f\u3092\u8003\u616e\u3057\u306a\u3044\u901a\u5e38\u306e\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u76f8\u5f53\u3057\u307e\u3059\uff08\u3064\u307e\u308a\u3001PINN\u3067\u306f\u306a\u3044NN\uff09\u3002<\/p>\n<p><strong>\u6700\u9069\u5316\u624b\u6cd5\u3068\u5b66\u7fd2\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u9078\u5b9a:<\/strong><br \/>\n\u30e2\u30c7\u30eb\u306e\u5b66\u7fd2\u306b\u306fAdam\u30aa\u30d7\u30c6\u30a3\u30de\u30a4\u30b6\u304c\u4f7f\u7528\u3055\u308c\u307e\u3057\u305f\u3002\u6700\u3082\u826f\u3044\u7d50\u679c\u306f\u3001\u5b66\u7fd2\u7387\u304c0.001\u306e\u3068\u304d\u306b\u5f97\u3089\u308c\u307e\u3057\u305f\u3002\u6700\u9ad8\u306e\u7cbe\u5ea6\u3092\u9054\u6210\u3059\u308b\u305f\u3081\u306b\u3001\u306a\u3093\u306840\u4e07\u30a8\u30dd\u30c3\u30af\u306b\u304a\u3088\u3076\u975e\u5e38\u306b\u9577\u3044\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u30d7\u30ed\u30bb\u30b9\u304c\u9078\u629e\u3055\u308c\u307e\u3057\u305f\u3002PINN\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u306e\u76ee\u7684\u306f\u3001GT\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u518d\u73fe\u306b\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u30e2\u30c7\u30eb\u306e\u904e\u5b66\u7fd2\u306b\u3088\u308b\u30a8\u30e9\u30fc\u306f\u3001\u5f93\u6765\u306e\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u3088\u3046\u306b\u6df1\u523b\u306a\u554f\u984c\u3068\u306f\u898b\u306a\u3055\u308c\u307e\u305b\u3093\u3002\u5f93\u6765\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u306f\u3001\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u30c7\u30fc\u30bf\u3078\u306e\u904e\u5270\u9069\u5408\u304c\u4e00\u822c\u5316\u80fd\u529b\u306e\u55aa\u5931\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u30b9\u30c6\u30c3\u30d74\uff1a\u5b66\u7fd2\u6e08\u307fPINN\u30e2\u30c7\u30eb\u306e\u6027\u80fd\u8a55\u4fa1<\/h3>\n<p>\u5b66\u7fd2\u30d7\u30ed\u30bb\u30b9\u306e\u5b8c\u4e86\u5f8c\u3001PINN\u306f\u6307\u5b9a\u3055\u308c\u305f t, x, y \u306e\u5024\u304b\u3089 u, v, p \u306e\u5024\u3092\u8a08\u7b97\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n\u30e2\u30c7\u30eb\u306e\u6027\u80fd\u3092\u8a55\u4fa1\u3059\u308b\u305f\u3081\u306b\u3001GT\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u304b\u3089\u306e\u30c7\u30fc\u30bf\u3092\u7528\u3044\u3066\u30c6\u30b9\u30c8\u3092\u884c\u3044\u307e\u3057\u305f\u3002\u8a55\u4fa1\u306b\u306f\u30013\u3064\u306e\u7279\u5b9a\u306e\u6642\u523b\uff08t = 51\u3001t = 75\u3001t = 99\uff09\u306e\u30c7\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u306f\u610f\u56f3\u7684\u306b\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u304b\u3089\u9664\u5916\u3055\u308c\u3001\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u3068\u3057\u3066\u306e\u307f\u4f7f\u7528\u3055\u308c\u307e\u3057\u305f\u3002\u5404\u30c6\u30b9\u30c8\u30bb\u30c3\u30c8\u306f\u3001\u7a7a\u9593\u5185\u306e5551\u5730\u70b9\uff08x, y\uff09\u3092\u542b\u3093\u3067\u3044\u307e\u3059\u3002<br \/>\n\u7cbe\u5ea6\u306e\u6307\u6a19\u3068\u3057\u3066\u306f\u3001PINN\uff08\u307e\u305f\u306f\u901a\u5e38\u306e\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff09\u306b\u3088\u3063\u3066\u4e88\u6e2c\u3055\u308c\u305f u, v, p \u306e\u5024\u3068\u3001CFD\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\uff08GT\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\uff09\u3067\u5f97\u3089\u308c\u305f\u7d50\u679c\u3068\u306e\u9593\u306e\u5e73\u5747\u4e8c\u4e57\u8aa4\u5dee\uff08MSE\uff09\u304c\u4f7f\u7528\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h4>\u30b1\u30fc\u30b91\uff1a\u30e9\u30f3\u30c0\u30e0\u306b\u62bd\u51fa\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306b\u3088\u308b\u5b66\u7fd2<\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-17658\" src=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-1024x484.jpg\" alt=\"\" width=\"1024\" height=\"484\" srcset=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-1024x484.jpg 1024w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-300x142.jpg 300w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-768x363.jpg 768w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-1536x726.jpg 1536w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-2048x968.jpg 2048w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-304x144.jpg 304w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-282x133.jpg 282w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><br \/>\n\u56f35. PINN\u30e2\u30c7\u30eb\u306b\u3088\u308b\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u7d50\u679c\u3068GT\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u3068\u306e\u6bd4\u8f03 \u2014 \u30e9\u30f3\u30c0\u30e0\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u5834\u5408\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-17660\" src=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/t_best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-1024x484.jpg\" alt=\"\" width=\"1024\" height=\"484\" srcset=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/t_best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-1024x484.jpg 1024w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/t_best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-300x142.jpg 300w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/t_best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-768x363.jpg 768w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/t_best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-1536x726.jpg 1536w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/t_best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-2048x968.jpg 2048w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/t_best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-304x144.jpg 304w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/t_best_model_Tmin50_batch_size_4096_lambda_1_lr_0.001-282x133.jpg 282w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><br \/>\n\u56f36.\u901a\u5e38\u306e\u30cb\u30e5\u30fc\u30e9\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u3088\u308b\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u7d50\u679c\u3068GT\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u30c7\u30fc\u30bf\u3068\u306e\u6bd4\u8f03 \u2014 \u30e9\u30f3\u30c0\u30e0\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u5834\u5408\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-17664\" src=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig-7-1024x385.png\" alt=\"\" width=\"1024\" height=\"385\" srcset=\"https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig-7-1024x385.png 1024w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig-7-300x113.png 300w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig-7-768x289.png 768w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig-7-304x114.png 304w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig-7-282x106.png 282w, https:\/\/www.ecomottblog.com\/wp-content\/uploads\/2025\/06\/fig-7.png 1269w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><br \/>\n\u56f37\uff0e\u5404\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3051\u308b\u5e73\u5747\u4e8c\u4e57\u8aa4\u5dee\uff08MSE\uff09\u306e\u5024 \u2014 \u30e9\u30f3\u30c0\u30e0\u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306e\u5834\u5408<\/p>\n<p>\u3053\u306e\u30b1\u30fc\u30b9\u306b\u304a\u3051\u308b\u30b7\u30df\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u7d50\u679c\u3068\u3001\u305d\u308c\u306b\u5bfe\u5fdc\u3059\u308b\u5e73\u5747\u4e8c\u4e57\u8aa4\u5dee\uff08MSE\uff09\u306e\u5024\u306f\u3001\u56f35\u3001\u56f36\u3001\u304a\u3088\u3073\u56f37\u306b\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<br 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