<?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[求助：可压缩求解器模拟liquid pistion benchmark压强衰减问题]]></title><description><![CDATA[<p dir="auto">各位老师好，我用compressibleInterFoam模拟了一维重力作用下液体活塞运动基准算例，文献中底部压强是震荡且保持稳定的幅值，但是我模拟出来的压强是逐渐衰减的<br />
<img src="/assets/uploads/files/1647395735995-403dedc9-26b5-4905-9f9f-361d50c7abe0-image.png" alt="403dedc9-26b5-4905-9f9f-361d50c7abe0-image.png" class=" img-fluid img-markdown" /><br />
<img src="/assets/uploads/files/1647395892349-3bb37b59-a58d-43d3-8a11-1d03074e4cf4-image.png" alt="3bb37b59-a58d-43d3-8a11-1d03074e4cf4-image.png" class=" img-fluid img-markdown" /><br />
查看alpha场发现在底部气体压缩的过程中，气液界面紊乱了，推测是这个原因导致衰减。</p>
<p dir="auto"><img src="/assets/uploads/files/1647396154996-db2570f2-3bdd-4323-b916-37c8297d5afe-image.png" alt="db2570f2-3bdd-4323-b916-37c8297d5afe-image.png" class=" img-fluid img-markdown" /><br />
算例二维，上下左右4个边界均是wall边界，无其他特殊设置。改变边界类型为滑移和无滑移没有大的变化，大佬们知道有什么方法可以解决界面变形这个问题吗？</p>
]]></description><link>https://cfd-china.com/topic/5566/求助-可压缩求解器模拟liquid-pistion-benchmark压强衰减问题</link><generator>RSS for Node</generator><lastBuildDate>Tue, 16 Jun 2026 21:54:42 GMT</lastBuildDate><atom:link href="https://cfd-china.com/topic/5566.rss" rel="self" type="application/rss+xml"/><pubDate>Wed, 16 Mar 2022 02:15:11 GMT</pubDate><ttl>60</ttl><item><title><![CDATA[Reply to 求助：可压缩求解器模拟liquid pistion benchmark压强衰减问题 on Thu, 17 Mar 2022 01:07:57 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://cfd-china.com/uid/3138">@miss-zhou_dut</a>  哎哟我勒个去 <img src="https://cfd-china.com/assets/plugins/nodebb-plugin-emoji/emoji/customizations/4bed618b-470b-4331-bd6c-9f32596e8ca4-3.gif?v=eedi85amb0g" class="not-responsive emoji emoji-customizations emoji--143" style="height:23px;width:auto;vertical-align:middle" title=":143:" alt=":143:" /></p>
]]></description><link>https://cfd-china.com/post/29607</link><guid isPermaLink="true">https://cfd-china.com/post/29607</guid><dc:creator><![CDATA[李东岳]]></dc:creator><pubDate>Thu, 17 Mar 2022 01:07:57 GMT</pubDate></item><item><title><![CDATA[Reply to 求助：可压缩求解器模拟liquid pistion benchmark压强衰减问题 on Wed, 16 Mar 2022 03:21:55 GMT]]></title><description><![CDATA[<p dir="auto">问题已解决，忘了这是1维算例了<img src="https://cfd-china.com/assets/plugins/nodebb-plugin-emoji/emoji/customizations/7c2a3def-0d88-4862-b817-081d5b02aa31-3.gif?v=eedi85amb0g" class="not-responsive emoji emoji-customizations emoji--136" style="height:23px;width:auto;vertical-align:middle" title=":136:" alt=":136:" /> 宽度方向改成一个网格就行了</p>
]]></description><link>https://cfd-china.com/post/29580</link><guid isPermaLink="true">https://cfd-china.com/post/29580</guid><dc:creator><![CDATA[Miss Zhou_DUT]]></dc:creator><pubDate>Wed, 16 Mar 2022 03:21:55 GMT</pubDate></item><item><title><![CDATA[Reply to 求助：可压缩求解器模拟liquid pistion benchmark压强衰减问题 on Thu, 17 Mar 2022 01:07:42 GMT]]></title><description><![CDATA[<p dir="auto"><a class="plugin-mentions-user plugin-mentions-a" href="https://cfd-china.com/uid/1">@李东岳</a> 李老师好，表面张力是0.07，我看到的文献[1][2]都是数值结果，原始文献[3]下载不到，计算域高度是15m，宽度为1m，网格长度为0.025m。我已经尝试将宽度缩小为0.1m, 并考虑接触角，但是紊乱的问题仍然存在，压强也是衰减的。</p>
<pre><code>[1]Sun H., Sun Z., Liang S., et al. Numerical study of air compressibility effects in breaking wave impacts using a CIP-based model. Ocean Engineering[J]. 2019,174: 159-168.
[2]Ma Z. H., Causon D. M., Qian L., et al. A compressible multiphase flow model for violent aerated wave impact problems. PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES[J]. 2014,470(2172).
[3]Dias F, Brosset L. 2010 Comparative numerical study: description of the calculation case. InProc. 20th Int. Offshore and Polar Engineering Conf., Beijing, PR China, 20–25 June.
</code></pre>
]]></description><link>https://cfd-china.com/post/29577</link><guid isPermaLink="true">https://cfd-china.com/post/29577</guid><dc:creator><![CDATA[Miss Zhou_DUT]]></dc:creator><pubDate>Thu, 17 Mar 2022 01:07:42 GMT</pubDate></item><item><title><![CDATA[Reply to 求助：可压缩求解器模拟liquid pistion benchmark压强衰减问题 on Wed, 16 Mar 2022 02:18:19 GMT]]></title><description><![CDATA[<p dir="auto">你这个尺度看起来挺大的，看起来模拟应该就会乱。实验的结果液体不会乱？感觉只有小细管才能保证不会乱。你的表面张力是0.07？</p>
]]></description><link>https://cfd-china.com/post/29576</link><guid isPermaLink="true">https://cfd-china.com/post/29576</guid><dc:creator><![CDATA[李东岳]]></dc:creator><pubDate>Wed, 16 Mar 2022 02:18:19 GMT</pubDate></item></channel></rss>