{"id":27040,"date":"2026-09-26T23:07:02","date_gmt":"2026-09-26T15:07:02","guid":{"rendered":"https:\/\/www.dimioo.com\/?p=27040&post_type=doc"},"modified":"2026-09-26T23:07:02","modified_gmt":"2026-09-26T15:07:02","slug":"cfd-%e7%ae%80%e4%bb%8b","status":"publish","type":"doc","link":"https:\/\/www.dimioo.com\/?p=27040","title":{"rendered":"CFD \u7b80\u4ecb"},"content":{"rendered":"<h2>CFD \u7b80\u4ecb<\/h2>\n<p>CFD \u4ee3\u8868\u8ba1\u7b97\u6d41\u4f53\u52a8\u529b\u5b66\u3002SolidWorks CFD \u9ed1\u76ae\u4e66\u786e\u5b9e\u662f\u9762\u5411\u521d\u5b66\u8005\u7684\u3002\u5982\u679c\u4f60\u4ee5\u524d\u4ece\u672a\u5b66\u4e60\u8fc7 CFD\uff0c\u5982\u679c\u4f60\u4ece\u672a\u5728\u8be5\u9886\u57df\u5de5\u4f5c\u8fc7\uff0c\u5982\u679c\u4f60\u5bf9 CFD \u5230\u5e95\u662f\u4ec0\u4e48\u6ca1\u6709\u771f\u6b63\u7684\u6982\u5ff5\uff0c\u90a3\u4e48\u8fd9\u672c\u4e66\u5c31\u662f\u4e3a\u4f60\u800c\u5199\u7684\u3002\u6211\u4eec\u5047\u8bbe\u4f60\u5b8c\u5168\u6ca1\u6709 CFD 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\u8fd9\u4e2a\u7f29\u5199\u88ab\u666e\u904d\u63a5\u53d7\u4e3a\u201c\u8ba1\u7b97\u6d41\u4f53\u52a8\u529b\u5b66\u201d\u7684\u4ee3\u79f0\u3002\u6211\u4eec\u5c06\u5728\u672c\u4e66\u4e2d\u59cb\u7ec8\u4f7f\u7528\u8fd9\u4e2a\u7f29\u5199\u3002<\/p>\n<p>\u8ba1\u7b97\u6d41\u4f53\u52a8\u529b\u5b66\uff08CFD\uff09\u662f\u4f7f\u7528\u5e94\u7528\u6570\u5b66\u3001\u7269\u7406\u5b66\u548c\u8ba1\u7b97\u8f6f\u4ef6\u5305\u6765\u7814\u7a76\u6c14\u4f53\u6216\u6db2\u4f53\u5982\u4f55\u6d41\u52a8\uff0c\u4ee5\u53ca\u6c14\u4f53\u6216\u6db2\u4f53\u5728\u6d41\u8fc7\u7269\u4f53\u65f6\u5982\u4f55\u5f71\u54cd\u7269\u4f53\u3002\u8ba1\u7b97\u6d41\u4f53\u52a8\u529b\u5b66\u57fa\u4e8e\u7eb3\u7ef4-\u65af\u6258\u514b\u65af\u65b9\u7a0b\u3002\u8fd9\u4e9b\u65b9\u7a0b\u63cf\u8ff0\u4e86\u8fd0\u52a8\u6d41\u4f53\u7684\u901f\u5ea6\u3001\u538b\u529b\u3001\u6e29\u5ea6\u548c\u5bc6\u5ea6\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/p>\n<p>\u7eb3\u7ef4-\u65af\u6258\u514b\u65af\u65b9\u7a0b<\/p>\n<p>\u7eb3\u7ef4-\u65af\u6258\u514b\u65af\u65b9\u7a0b\u662f\u63cf\u8ff0\u4e0d\u53ef\u538b\u7f29\u6d41\u4f53\uff08\u725b\u987f\u6d41\u4f53\uff09\u6d41\u52a8\u7684\u57fa\u672c\u504f\u5fae\u5206\u65b9\u7a0b\u3002\u5229\u7528\u5e94\u529b\u7387\u548c\u5e94\u53d8\u7387\uff0c\u53ef\u4ee5\u8bc1\u660e\u5728\u975e\u65cb\u8f6c\u5750\u6807\u7cfb\u4e2d\u9ecf\u6027\u529b 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\u662f\u957f\u5ea6\u5c3a\u5ea6\uff0cu \u662f\u901f\u5ea6\u5c3a\u5ea6\u3002\u5728 cgs \u5355\u4f4d\u5236\u4e2d\uff0c<img src=\"wikiimg\/img20260810230536\/1200px-Greek_lc_eta.svg1.png\" alt=\"\" \/> \u7684\u5355\u4f4d\u4e3a g cm-1 s-1\u3002\u52a8\u6001\u9ecf\u5ea6\u4e0e\u8fd0\u52a8\u9ecf\u5ea6 <img src=\"wikiimg\/img20260810230536\/8-16-2017_3-50-21_PM.png\" alt=\"\" \/> \u7684\u5173\u7cfb\u4e3a<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-16-2017_3-52-22_PM.png\" alt=\"\" \/><\/p>\n<p>\u5176\u4e2d <img src=\"wikiimg\/img20260810230536\/8-16-2017_3-53-51_PM.png\" alt=\"\" \/> \u662f\u5bc6\u5ea6\u3002<\/p>\n<p>\u7b2c\u4e8c\u9ecf\u5ea6\u7cfb\u6570<\/p>\n<p>\u5bf9\u4e8e\u53ef\u538b\u7f29\u6d41\u4f53\uff0c\u5373 <img src=\"wikiimg\/img20260810230536\/grav2.png\" alt=\"\" \/>=0 \u7684\u6d41\u4f53\uff0c\u5176\u4e2d <img src=\"wikiimg\/img20260810230536\/grav2.png\" alt=\"\" \/> \u662f\u901f\u5ea6\u573a\u7684\u6563\u5ea6 <img src=\"wikiimg\/img20260810230536\/1200px-Greek_uc_sigma.svg.png\" alt=\"\" \/>\uff0c\u6d41\u4f53\u7684\u5e94\u529b\u5f20\u91cf\u53ef\u4ee5\u5199\u4e3a<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-16-2017_4-20-29_PM.png\" alt=\"\" \/><\/p>\n<p>\u5176\u4e2d <img src=\"wikiimg\/img20260810230536\/Kronecker_delta.png\" alt=\"\" \/> \u662f\u514b\u7f57\u5185\u514b \u03b4\uff0c<img src=\"wikiimg\/img20260810230536\/1200px-Greek_lc_eta.svg.png\" alt=\"\" \/> \u662f\u52a8\u6001\u9ecf\u5ea6\uff0c<img src=\"wikiimg\/img20260810230536\/e8b2ceec8c7ade11a7e02a4e7a4d57e0.png\" alt=\"\" \/> \u662f\u7b2c\u4e8c\u9ecf\u5ea6\u7cfb\u6570\u3002<img src=\"wikiimg\/img20260810230536\/e8b2ceec8c7ade11a7e02a4e7a4d57e0.png\" alt=\"\" \/> \u7c7b\u4f3c\u4e8e\u7b2c\u4e00\u62c9\u6885\u5e38\u6570\u3002\u5bf9\u4e8e\u4e0d\u53ef\u538b\u7f29\u6d41\u4f53\uff0c\u6d89\u53ca <img src=\"wikiimg\/img20260810230536\/e8b2ceec8c7ade11a7e02a4e7a4d57e0.png\" alt=\"\" \/> \u7684\u9879\u4ece\u65b9\u7a0b\u4e2d\u6d88\u5931\uff0c\u56e0\u6b64 <img src=\"wikiimg\/img20260810230536\/e8b2ceec8c7ade11a7e02a4e7a4d57e0.png\" alt=\"\" \/> \u53ef\u4ee5\u5ffd\u7565\u3002<\/p>\n<p>\u514b\u7f57\u5185\u514b \u03b4<\/p>\n<p>\u514b\u7f57\u5185\u514b \u03b4 \u6700\u7b80\u5355\u7684\u89e3\u91ca\u662f \u03b4 \u51fd\u6570\u7684\u79bb\u6563\u7248\u672c\uff0c\u5b9a\u4e49\u4e3a<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-16-2017_4-38-42_PM.png\" alt=\"\" \/><\/p>\n<p>\u514b\u7f57\u5185\u514b \u03b4 \u5728 Wolfram \u8bed\u8a00\u4e2d\u5b9e\u73b0\u4e3a KroneckerDelta[i, j]\uff0c\u4ee5\u53ca\u5e7f\u4e49\u5f62\u5f0f KroneckerDelta[i, j, ...]\uff0c\u5982\u679c\u6240\u6709\u53c2\u6570\u76f8\u7b49\u5219\u8fd4\u56de 1\uff0c\u5426\u5219\u8fd4\u56de 0\u3002<\/p>\n<p>\u5b83\u5177\u6709\u56f4\u9053\u79ef\u5206\u8868\u793a<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-16-2017_4-46-37_PM.png\" alt=\"\" \/><\/p>\n<p>\u5176\u4e2d <img src=\"wikiimg\/img20260810230536\/8-16-2017_4-50-12_PM.png\" alt=\"\" \/> \u662f\u5bf9\u5e94\u4e8e\u5355\u4f4d\u5706\u7684\u56f4\u9053\uff0cm \u548c n \u662f\u6574\u6570\u3002<\/p>\n<p>\u5728\u4e09\u7ef4\u7a7a\u95f4\u4e2d\uff0c\u514b\u7f57\u5185\u514b \u03b4 \u6ee1\u8db3\u6052\u7b49\u5f0f<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-16-2017_5-00-11_PM.png\" alt=\"\" \/><\/p>\n<p>\u5176\u4e2d\u9690\u542b\u4e86\u7231\u56e0\u65af\u5766\u6c42\u548c\u7ea6\u5b9a\u3002i,j=1,2,3\uff0c<img src=\"wikiimg\/img20260810230536\/8-16-2017_5-07-37_PM.png\" alt=\"\" \/> \u662f\u7f6e\u6362\u7b26\u53f7\u3002<\/p>\n<p>\u4e25\u683c\u6765\u8bf4\uff0c\u514b\u7f57\u5185\u514b \u03b4 \u662f\u7531\u4ee5\u4e0b\u5173\u7cfb\u5b9a\u4e49\u7684\u5f20\u91cf<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-16-2017_5-22-27_PM.png\" alt=\"\" \/><\/p>\n<p>\u56e0\u4e3a\u6839\u636e\u5b9a\u4e49\uff0c\u5f53 i=j \u65f6\u5750\u6807 xi \u548c xj \u662f\u72ec\u7acb\u7684\uff0c<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-16-2017_5-33-12_PM.png\" alt=\"\" \/><\/p>\n<p>\u6240\u4ee5\uff0c<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-16-2017_5-33-19_PM.png\" alt=\"\" \/><\/p>\n<p>\u5e76\u4e14 <img src=\"wikiimg\/img20260810230536\/8-16-2017_5-35-16_PM.png\" alt=\"\" \/> \u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u6df7\u5408\u4e8c\u9636\u5f20\u91cf\u3002\u5b83\u6ee1\u8db3<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-16-2017_5-36-28_PM.png\" alt=\"\" \/><\/p>\n<p>\u6563\u5ea6<\/p>\n<p>\u5411\u91cf\u573a F \u7684\u6563\u5ea6\uff0c\u8bb0\u4f5c div(F) \u6216 <img src=\"wikiimg\/img20260810230536\/grav21.png\" alt=\"\" \/>F\uff08\u672c\u8457\u4f5c\u4e2d\u4f7f\u7528\u7684\u8bb0\u53f7\uff09\uff0c\u7531\u66f2\u9762\u79ef\u5206\u7684\u6781\u9650\u5b9a\u4e49<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-17-2017_9-31-10_AM.png\" alt=\"\" \/><\/p>\n<p>\u5176\u4e2d\u66f2\u9762\u79ef\u5206\u63d0\u4f9b\u4e86 F \u5728\u5305\u56f4\u4f53\u79ef\u5206\u91cf V \u7684\u95ed\u5408\u5c0f\u8fb9\u754c\u9762 <img src=\"wikiimg\/img20260810230536\/8-17-2017_9-42-17_AM.png\" alt=\"\" \/> \u4e0a\u79ef\u5206\u7684\u503c\uff0c\u8be5\u4f53\u79ef\u5206\u91cf\u4f7f\u7528\u6781\u9650\u65b9\u6cd5\u53d6\u4e3a\u96f6\u3002\u56e0\u6b64\uff0c\u5411\u91cf\u573a\u7684\u6563\u5ea6\u662f\u4e00\u4e2a\u6807\u91cf\u573a\u3002\u5982\u679c <img src=\"wikiimg\/img20260810230536\/grav21.png\" alt=\"\" \/>F=0\uff0c\u5219\u8be5\u573a\u88ab\u79f0\u4e3a\u65e0\u6563\u5ea6\u573a\u3002\u7b26\u53f7 <img src=\"wikiimg\/img20260810230536\/grav21.png\" alt=\"\" \/> \u88ab\u79f0\u4e3a nabla \u6216 del\u3002<\/p>\n<p>\u4f53\u79ef\u9ecf\u5ea6<\/p>\n<p>\u6d41\u4f53\u7684\u4f53\u79ef\u9ecf\u5ea6 <img src=\"wikiimg\/img20260810230536\/8-16-2017_1-07-04_PM.png\" alt=\"\" \/> \u5b9a\u4e49\u4e3a<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-17-2017_10-04-24_AM.png\" alt=\"\" \/><\/p>\n<p>\u5176\u4e2d <img src=\"wikiimg\/img20260810230536\/e8b2ceec8c7ade11a7e02a4e7a4d57e01.png\" alt=\"\" \/> \u662f\u7b2c\u4e8c\u9ecf\u5ea6\u7cfb\u6570\uff0c<img src=\"wikiimg\/img20260810230536\/8-17-2017_10-07-05_AM.png\" alt=\"\" \/> \u662f\u526a\u5207\u9ecf\u5ea6\u3002<\/p>\n<p>\u96f7\u8bfa\u6570<\/p>\n<p>\u901a\u8fc7\u7ba1\u9053\u7684\u6d41\u52a8\u7684\u96f7\u8bfa\u6570\u5b9a\u4e49\u4e3a<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-17-2017_10-16-53_AM.png\" alt=\"\" \/><\/p>\n<p>\u5176\u4e2d <img src=\"wikiimg\/img20260810230536\/8-16-2017_3-53-51_PM.png\" alt=\"\" \/> \u662f\u6d41\u4f53\u5bc6\u5ea6\uff0cu \u662f\u901f\u5ea6\u5c3a\u5ea6\uff0cd \u662f\u7ba1\u9053\u76f4\u5f84\uff0cv \u662f\u6d41\u4f53\u7684\u8fd0\u52a8\u9ecf\u5ea6\u3002\u5b9e\u9a8c\u53d1\u73b0\uff0c\u6cca\u8083\u53f6\uff08\u5c42\u6d41\uff09\u6d41\u52a8\u5728 Re&lt;30 \u65f6\u53d1\u751f\u3002\u5728\u66f4\u5927\u7684\u96f7\u8bfa\u6570\u4e0b\uff0c\u6d41\u52a8\u53d8\u4e3a\u6e4d\u6d41\u3002<\/p>\n<p>\u5bc6\u5ea6<\/p>\n<p>\u7269\u8d28\u5355\u4f4d\u4f53\u79ef\u7684\u8d28\u91cf\u5ea6\u91cf\u3002\u5bf9\u4e8e\u8d28\u91cf\u4e3a m\u3001\u4f53\u79ef\u4e3a V \u7684\u7269\u8d28\uff0c<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-17-2017_10-45-16_AM.png\" alt=\"\" \/><\/p>\n<p>\u5bf9\u4e8e\u653e\u7f6e\u5728\u91cd\u5ea6\u4e3a ww \u7684\u6d41\u4f53\u4e2d\u7684\u91cd\u91cf\u4e3a wa \u7684\u7269\u4f53\uff0c<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-17-2017_10-47-16_AM.png\" alt=\"\" \/><\/p>\n<p>\u5176\u4e2d Gs \u662f\u7406\u60f3\u6c14\u4f53\u7684\u6bd4\u91cd\uff0c<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-17-2017_10-48-47_AM.png\" alt=\"\" \/><\/p>\n<p>\u8fd0\u52a8\u9ecf\u5ea6<\/p>\n<p>\u63cf\u8ff0\u52a8\u91cf\u6269\u6563\u7684\u7cfb\u6570\u3002\u8bbe <img src=\"wikiimg\/img20260810230536\/1200px-Greek_lc_eta.svg1.png\" alt=\"\" \/> \u4e3a\u52a8\u6001\u9ecf\u5ea6\uff0c\u5219<\/p>\n<p><img src=\"wikiimg\/img20260810230536\/8-17-2017_11-01-27_AM.png\" alt=\"\" \/><\/p>\n<p>\u8fd0\u52a8\u9ecf\u5ea6\u7684\u5355\u4f4d\u662f\u65af\u6258\u514b\u65af\uff0c\u7b49\u4e8e\u6bcf\u79d2 1 cm2<\/p>\n<p>Vwater = 1.0 X 10-6 m2 \u6bcf\u79d2 =0.010 cm2 \u6bcf\u79d2<\/p>\n<p>Vair = 1.5 X 10-5 m2 \u6bcf\u79d2 = 0.15 cm2 \u6bcf\u79d2<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CFD \u7b80\u4ecb CFD \u4ee3\u8868\u8ba1\u7b97\u6d41\u4f53\u52a8\u529b\u5b66\u3002SolidWorks CFD \u9ed1\u76ae\u4e66\u786e\u5b9e\u662f\u9762\u5411\u521d\u5b66\u8005\u7684\u3002\u5982\u679c\u4f60\u4ee5\u524d\u4ece &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.dimioo.com\/?p=27040\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cCFD \u7b80\u4ecb\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":27031,"menu_order":8,"comment_status":"open","ping_status":"closed","template":"","categories":[],"tags":[],"_links":{"self":[{"href":"https:\/\/www.dimioo.com\/index.php?rest_route=\/wp\/v2\/doc\/27040"}],"collection":[{"href":"https:\/\/www.dimioo.com\/index.php?rest_route=\/wp\/v2\/doc"}],"about":[{"href":"https:\/\/www.dimioo.com\/index.php?rest_route=\/wp\/v2\/types\/doc"}],"author":[{"embeddable":true,"href":"https:\/\/www.dimioo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dimioo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=27040"}],"version-history":[{"count":0,"href":"https:\/\/www.dimioo.com\/index.php?rest_route=\/wp\/v2\/doc\/27040\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.dimioo.com\/index.php?rest_route=\/wp\/v2\/doc\/27031"}],"wp:attachment":[{"href":"https:\/\/www.dimioo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27040"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dimioo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27040"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dimioo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27040"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}