<?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[OpenFOAM壁面摩擦速度]]></title><description><![CDATA[<p dir="auto">CFDer，我用simpleFoam求解了模型，postProcess了wallShearStress，怎么用这个wallShearStress算出壁面摩擦速度呢。<br />
主要问题在于，不可压缩求解器是没有密度的(或者说密度为1？)，而空气的密度应该是1.225。。里面如何换算，我没搞清楚。。。。</p>
]]></description><link>https://cfd-china.com/topic/3342/openfoam壁面摩擦速度</link><generator>RSS for Node</generator><lastBuildDate>Sun, 19 Jul 2026 07:05:58 GMT</lastBuildDate><atom:link href="https://cfd-china.com/topic/3342.rss" rel="self" type="application/rss+xml"/><pubDate>Mon, 10 Feb 2020 04:20:44 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to OpenFOAM壁面摩擦速度 on Mon, 10 Feb 2020 06:23:44 GMT]]></title><description><![CDATA[<p dir="auto">@东岳 我是按这个公式计算的，密度为1，那么u_tau=sqrt(tau_w)，但是我发现，论文里的摩擦速度刚好是我用OF算出来的1.225倍。论文是用fluent算的，fluent里面的空气密度是1.225。我现在想不通 为什么会差这1.225倍。<img src="https://cfd-china.com/assets/plugins/nodebb-plugin-emoji/emoji/customizations/84fee15c-2b5d-448e-9414-2b6a6bb8e213-D8A77A86A838BA80497361A01F70AA78.jpg?v=eedi85amb0g" class="not-responsive emoji emoji-customizations emoji--jingya" style="height:23px;width:auto;vertical-align:middle" title=":jingya:" alt=":jingya:" /></p>
]]></description><link>https://cfd-china.com/post/17942</link><guid isPermaLink="true">https://cfd-china.com/post/17942</guid><dc:creator><![CDATA[Samuel-Tu]]></dc:creator><pubDate>Mon, 10 Feb 2020 06:23:44 GMT</pubDate></item><item><title><![CDATA[Reply to OpenFOAM壁面摩擦速度 on Mon, 10 Feb 2020 05:19:34 GMT]]></title><description><![CDATA[<p dir="auto">不可压缩那面密度是1，你参考 <a href="http://dyfluid.com/wallFunction.html" target="_blank" rel="noopener noreferrer nofollow ugc">http://dyfluid.com/wallFunction.html</a>  公式5换算一下不就可以了？</p>
]]></description><link>https://cfd-china.com/post/17941</link><guid isPermaLink="true">https://cfd-china.com/post/17941</guid><dc:creator><![CDATA[李东岳]]></dc:creator><pubDate>Mon, 10 Feb 2020 05:19:34 GMT</pubDate></item></channel></rss>