<?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[关于openfoam管道流加指向轴心压力的问题]]></title><description><![CDATA[<p dir="auto">求助各位大神，本人openfoam菜鸟，望各位指点，问题如下：<br />
液体在圆管内流动的情况下，加一个指向轴心的压力，而且压力大小与x,y轴有关（压力分别在x,y,z轴的分量为Fx=kx,Fy=ky,Fz=0其中k是常数）</p>
]]></description><link>https://cfd-china.com/topic/497/关于openfoam管道流加指向轴心压力的问题</link><generator>RSS for Node</generator><lastBuildDate>Tue, 19 May 2026 21:34:31 GMT</lastBuildDate><atom:link href="https://cfd-china.com/topic/497.rss" rel="self" type="application/rss+xml"/><pubDate>Thu, 01 Sep 2016 06:22:12 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to 关于openfoam管道流加指向轴心压力的问题 on Sun, 04 Sep 2016 09:47:45 GMT]]></title><description><![CDATA[<p dir="auto">@cfd-china ![其中F的方向指向X轴，在x轴方向的分量为0即Fx=0<br />
Y轴方向的分量为Fy=5y<br />
Z轴方向的分量为Fz=5z</p>
]]></description><link>https://cfd-china.com/post/2209</link><guid isPermaLink="true">https://cfd-china.com/post/2209</guid><dc:creator><![CDATA[zhanghan]]></dc:creator><pubDate>Sun, 04 Sep 2016 09:47:45 GMT</pubDate></item><item><title><![CDATA[Reply to 关于openfoam管道流加指向轴心压力的问题 on Sun, 04 Sep 2016 09:41:09 GMT]]></title><description><![CDATA[<p dir="auto">@cfd-china <img src="/uploads/files/1472981954200-84-0ma-mm-96-0-30vg6_7i-9.png" alt="0_1472981952601_84{0MA%$MM`0$30VG6_7I{9.png" class=" img-fluid img-markdown" /><br />
实在抱歉，我只能采用这种笨方式来表达我的意思了。</p>
]]></description><link>https://cfd-china.com/post/2207</link><guid isPermaLink="true">https://cfd-china.com/post/2207</guid><dc:creator><![CDATA[zhanghan]]></dc:creator><pubDate>Sun, 04 Sep 2016 09:41:09 GMT</pubDate></item><item><title><![CDATA[Reply to 关于openfoam管道流加指向轴心压力的问题 on Sun, 04 Sep 2016 09:19:29 GMT]]></title><description><![CDATA[<p dir="auto">如果可以提供具体的F的数学表达式，会更好的植入。</p>
]]></description><link>https://cfd-china.com/post/2206</link><guid isPermaLink="true">https://cfd-china.com/post/2206</guid><dc:creator><![CDATA[CFD中文网]]></dc:creator><pubDate>Sun, 04 Sep 2016 09:19:29 GMT</pubDate></item><item><title><![CDATA[Reply to 关于openfoam管道流加指向轴心压力的问题 on Thu, 01 Sep 2016 14:38:49 GMT]]></title><description><![CDATA[<p dir="auto">太感谢您的回复了，万分感激！<br />
Fx表示x轴方向的分力<br />
Fy表示y轴方向的分力<br />
Fz表示z轴方向的分力<br />
k表示一个常数</p>
]]></description><link>https://cfd-china.com/post/2185</link><guid isPermaLink="true">https://cfd-china.com/post/2185</guid><dc:creator><![CDATA[zhanghan]]></dc:creator><pubDate>Thu, 01 Sep 2016 14:38:49 GMT</pubDate></item><item><title><![CDATA[Reply to 关于openfoam管道流加指向轴心压力的问题 on Thu, 01 Sep 2016 14:15:47 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://cfd-china.com/uid/303">@zhanghan</a></p>
<ol>
<li>是否有不加压力的结果?</li>
<li>有一个较粗糙的想法是通过源项加在速度方程，不过你这个压力方程描述的不是很清楚，有公式否？</li>
</ol>
<pre><code>        fvVectorMatrix UEqn
        (
            fvm::ddt(U)
          + fvm::div(phi, U)
          - fvm::laplacian(nu, U)
        );

        solve
        (
            UEqn
            ==
            fvc::reconstruct
            (
                    pForce_f * mesh.magSf()
            )
        );
</code></pre>
]]></description><link>https://cfd-china.com/post/2183</link><guid isPermaLink="true">https://cfd-china.com/post/2183</guid><dc:creator><![CDATA[CFD中文网]]></dc:creator><pubDate>Thu, 01 Sep 2016 14:15:47 GMT</pubDate></item></channel></rss>