<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[fluent动网格+多相流+非牛顿流体]]></title><description><![CDATA[<p dir="auto">各位老师好，我做的内容是类似于点胶过程，通过撞针的运动实现液体的喷射，但是撞针在上升运动的时候，会出现极大的负绝对压力（-10^7），和极大的速度（5000m/s），如果把材料换成气体或者水，就没有问题了，或者只考虑撞针从一定高度下落，也是正常的，请问可能是什么问题呢？<br />
<img src="/assets/uploads/files/1623738946490-9f6b2524-9f76-49e9-ad9b-d76ff5925565-image.png" alt="9f6b2524-9f76-49e9-ad9b-d76ff5925565-image.png" class=" img-fluid img-markdown" /><br />
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]]></description><link>https://cfd-china.com/topic/4933/fluent动网格-多相流-非牛顿流体</link><generator>RSS for Node</generator><lastBuildDate>Sun, 19 Jul 2026 06:39:30 GMT</lastBuildDate><atom:link href="https://cfd-china.com/topic/4933.rss" rel="self" type="application/rss+xml"/><pubDate>Tue, 15 Jun 2021 06:36:59 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to fluent动网格+多相流+非牛顿流体 on Thu, 17 Jun 2021 07:39:06 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://cfd-china.com/uid/1493">@cccrrryyy</a> 你好，非牛顿模型确实用的是power-law，多写您给的意见，我已经在这上面困惑好久了，谢谢！</p>
]]></description><link>https://cfd-china.com/post/26175</link><guid isPermaLink="true">https://cfd-china.com/post/26175</guid><dc:creator><![CDATA[Ligang]]></dc:creator><pubDate>Thu, 17 Jun 2021 07:39:06 GMT</pubDate></item><item><title><![CDATA[Reply to fluent动网格+多相流+非牛顿流体 on Thu, 17 Jun 2021 07:23:44 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://cfd-china.com/uid/3816">@ligang</a> 就是流场截面会变大变小是吧？我觉得可以在网格上下下功夫。然后非牛顿流体的模型呢？如果是power-law的话很有可能因为黏性没有上下限导致计算出来的速度特别大之类的。</p>
<p dir="auto">最好的排查办法是先算一个没有动网格、横截面最小的流场，看看会不会出现你说的问题。如果这个跑通了，那么没有动网格、横截面最大的流场大概率也没有问题。最后再去调整动网格的东西。</p>
]]></description><link>https://cfd-china.com/post/26174</link><guid isPermaLink="true">https://cfd-china.com/post/26174</guid><dc:creator><![CDATA[cccrrryyy]]></dc:creator><pubDate>Thu, 17 Jun 2021 07:23:44 GMT</pubDate></item><item><title><![CDATA[Reply to fluent动网格+多相流+非牛顿流体 on Thu, 17 Jun 2021 06:09:38 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://cfd-china.com/uid/1493">@cccrrryyy</a> 你好，这个模型的动网格就是指中间“撞针”壁面的往复运动，运动开始时的间隙特别小，可能在0.02mm，目前只有两层网格。</p>
]]></description><link>https://cfd-china.com/post/26169</link><guid isPermaLink="true">https://cfd-china.com/post/26169</guid><dc:creator><![CDATA[Ligang]]></dc:creator><pubDate>Thu, 17 Jun 2021 06:09:38 GMT</pubDate></item><item><title><![CDATA[Reply to fluent动网格+多相流+非牛顿流体 on Thu, 17 Jun 2021 05:56:20 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://cfd-china.com/uid/3816">@ligang</a> 这个动网格是动在什么地方？VOF对网格要求比较高，如果是非牛顿，取决于你用的模型，网格可能还要更细一些才行。</p>
]]></description><link>https://cfd-china.com/post/26168</link><guid isPermaLink="true">https://cfd-china.com/post/26168</guid><dc:creator><![CDATA[cccrrryyy]]></dc:creator><pubDate>Thu, 17 Jun 2021 05:56:20 GMT</pubDate></item></channel></rss>