{"id":1017,"date":"2025-11-21T11:22:13","date_gmt":"2025-11-21T03:22:13","guid":{"rendered":"https:\/\/guagefangzhen.cn\/?p=1017"},"modified":"2025-12-05T14:38:46","modified_gmt":"2025-12-05T06:38:46","slug":"%e6%9c%89%e9%99%90%e5%85%83%e4%b8%ad%e7%9a%84%e6%ba%90%e5%92%8c%e6%b1%87","status":"publish","type":"post","link":"https:\/\/guagefangzhen.cn\/?p=1017","title":{"rendered":"\u6709\u9650\u5143\u4e2d\u7684\u201c\u6e90\u201d\u548c\u201c\u6c47\u201d"},"content":{"rendered":"\n<p>\u5728\u6709\u9650\u5143\u5206\u6790\uff08FEA\uff09\u6216\u66f4\u5e7f\u6cdb\u5730\uff0c\u5728\u504f\u5fae\u5206\u65b9\u7a0b\uff08PDE\uff09\u7684\u6570\u503c\u6a21\u62df\u4e2d\uff0c\u201c\u6e90\u201d\uff08source\uff09\u548c\u201c\u6c47\u201d\uff08sink\uff09\u662f\u4e24\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u4eec\u63cf\u8ff0\u4e86\u7cfb\u7edf\u5185\u90e8\u6216\u8fb9\u754c\u4e0a\u7269\u8d28\u7684\u4ea7\u751f\u6216\u6d88\u8017\u3001\u80fd\u91cf\u7684\u8f93\u5165\u6216\u8f93\u51fa\u3001\u6216\u66f4\u4e00\u822c\u5730\uff0c\u67d0\u79cd\u7269\u7406\u91cf\u7684\u589e\u52a0\u6216\u51cf\u5c11\u673a\u5236\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 \u4e00\u53e5\u8bdd\u7406\u89e3\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6e90\uff08Source\uff09<\/strong>\uff1a\u4f7f\u7cfb\u7edf\u5185\u67d0\u7269\u7406\u91cf\u589e\u52a0\u7684\u56e0\u7d20\uff08\u6b63\u8d21\u732e\uff09\u3002<\/li>\n\n\n\n<li><strong>\u6c47\uff08Sink\uff09<\/strong>\uff1a\u4f7f\u7cfb\u7edf\u5185\u67d0\u7269\u7406\u91cf\u51cf\u5c11\u7684\u56e0\u7d20\uff08\u8d1f\u8d21\u732e\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udccc \u6570\u5b66\u4e0a\u7684\u4f53\u73b0<\/h3>\n\n\n\n<p>\u5728\u63a7\u5236\u65b9\u7a0b\u4e2d\uff0c\u6e90\u548c\u6c47\u901a\u5e38\u51fa\u73b0\u5728<strong>\u65b9\u7a0b\u7684\u53f3\u7aef\u9879<\/strong>\u6216<strong>\u8fb9\u754c\u6761\u4ef6<\/strong>\u4e2d\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. <strong>\u5728\u63a7\u5236\u65b9\u7a0b\u4e2d<\/strong><\/h4>\n\n\n\n<p>\u4ee5<strong>\u70ed\u4f20\u5bfc\u65b9\u7a0b<\/strong>\u4e3a\u4f8b\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"250\" height=\"63\" data-src=\"https:\/\/guagefangzhen.cn\/wp-content\/uploads\/2025\/11\/\u56fe\u7247-1.png\" alt=\"\" class=\"wp-image-1018 lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 250px; --smush-placeholder-aspect-ratio: 250\/63;\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>Q \u5c31\u662f<strong>\u6e90\u9879<\/strong>\uff08source term\uff09\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c $ Q > 0 $\uff1a\u8868\u793a\u6709\u70ed\u91cf<strong>\u4ea7\u751f<\/strong>\uff08\u5982\u7535\u52a0\u70ed\u3001\u5316\u5b66\u53cd\u5e94\u653e\u70ed\uff09\u2192 <strong>\u6e90<\/strong><\/li>\n\n\n\n<li>\u5982\u679c $ Q &lt; 0 $\uff1a\u8868\u793a\u6709\u70ed\u91cf<strong>\u88ab\u5438\u6536<\/strong>\uff08\u5982\u51b7\u5374\u3001\u76f8\u53d8\u5438\u70ed\uff09\u2192 <strong>\u6c47<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">2. <strong>\u5728\u8fb9\u754c\u6761\u4ef6\u4e2d<\/strong><\/h4>\n\n\n\n<p>\u4f8b\u5982\uff0c\u5728<strong>\u5bf9\u6d41\u8fb9\u754c\u6761\u4ef6<\/strong>\u4e2d\uff1a <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"235\" height=\"46\" data-src=\"https:\/\/guagefangzhen.cn\/wp-content\/uploads\/2025\/11\/\u56fe\u7247-2.png\" alt=\"\" class=\"wp-image-1019 lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 235px; --smush-placeholder-aspect-ratio: 235\/46;\" \/><\/figure>\n<\/div>\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u5916\u754c\u6e29\u5ea6 T_\u221e > T \uff0c\u70ed\u91cf\u6d41\u5165\u7cfb\u7edf \u2192 <strong>\u6e90<\/strong><\/li>\n\n\n\n<li>\u5982\u679c  T_\u221e&lt; T \uff0c\u70ed\u91cf\u6d41\u51fa\u7cfb\u7edf \u2192 <strong>\u6c47<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udccc \u6709\u9650\u5143\u4e2d\u7684\u5b9e\u73b0<\/h3>\n\n\n\n<p>\u5728\u6709\u9650\u5143\u79bb\u6563\u4e2d\uff0c\u6e90\/\u6c47\u9879\u4f1a\u88ab<strong>\u79ef\u5206\u5230\u5355\u5143\u53f3\u7aef\u5411\u91cf<\/strong>\uff08\u8f7d\u8377\u5411\u91cf\uff09\u4e2d\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u793a\u4f8b\uff1a1D \u70ed\u4f20\u5bfc\u5355\u5143<\/h4>\n\n\n\n<p>\u5047\u8bbe\u5355\u5143\u957f\u5ea6\u4e3a  L \uff0c\u7ebf\u6027\u5f62\u51fd\u6570\u4e3a N_1, N_2 \uff0c\u6e90\u9879\u4e3a\u5e38\u6570  Q \uff1a <\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"282\" height=\"74\" data-src=\"https:\/\/guagefangzhen.cn\/wp-content\/uploads\/2025\/11\/\u56fe\u7247-3.png\" alt=\"\" class=\"wp-image-1020 lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 282px; 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