<?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[欧拉双流体模型中应力张量的表示问题]]></title><description><![CDATA[<p dir="auto">在Fluent theory guide中看到动量方程中应力张量表示如下图<br />
红框中为什么是$\lambda_q-\frac{2}{3}\mu_q$?斯托克斯假设$\lambda_q=\frac{2}{3}\mu_q$，这里应该写$\lambda_q$或者$\frac{2}{3}\mu_q$啊，为什么这么表示？是我漏掉了什么吗？<br />
<img src="http://papn87r82.bkt.clouddn.com/%E4%BD%93%E7%A7%AF%E7%B2%98%E5%BA%A6.png" alt="bulk viscosity" class=" img-fluid img-markdown" /></p>
]]></description><link>https://cfd-china.com/topic/1921/欧拉双流体模型中应力张量的表示问题</link><generator>RSS for Node</generator><lastBuildDate>Sun, 19 Jul 2026 07:05:45 GMT</lastBuildDate><atom:link href="https://cfd-china.com/topic/1921.rss" rel="self" type="application/rss+xml"/><pubDate>Wed, 31 Oct 2018 12:47:02 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to 欧拉双流体模型中应力张量的表示问题 on Wed, 05 Dec 2018 03:01:17 GMT]]></title><description><![CDATA[<p dir="auto">@东岳 老师，没理解您的意思。后面的$\alpha_q\lambda_q\nabla·\vec{v_q}I$中单位二阶张量是表示体形变率仅出现在法相应力中，红框内等于$-\frac{2}{3}\lambda_q$时才能与法相应力对应啊</p>
]]></description><link>https://cfd-china.com/post/10743</link><guid isPermaLink="true">https://cfd-china.com/post/10743</guid><dc:creator><![CDATA[Alex]]></dc:creator><pubDate>Wed, 05 Dec 2018 03:01:17 GMT</pubDate></item><item><title><![CDATA[Reply to 欧拉双流体模型中应力张量的表示问题 on Tue, 04 Dec 2018 14:07:51 GMT]]></title><description><![CDATA[<p dir="auto">你的理解是对的，他写的也是对的，不过你看后面，它有个$\mathbf{I}$哦，是个单位二阶张亮</p>
]]></description><link>https://cfd-china.com/post/10735</link><guid isPermaLink="true">https://cfd-china.com/post/10735</guid><dc:creator><![CDATA[李东岳]]></dc:creator><pubDate>Tue, 04 Dec 2018 14:07:51 GMT</pubDate></item></channel></rss>