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Mu,
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<div>Set p94 and 95 to zero. That will eliminate that issue.</div>
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<div>The result not being right is a separate issue.</div>
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<div>Paul</div>
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<div id="divRpF554813" style="direction: ltr;"><font face="Tahoma" size="2" color="#000000"><b>From:</b> nek5000-users-bounces@lists.mcs.anl.gov [nek5000-users-bounces@lists.mcs.anl.gov] on behalf of nek5000-users@lists.mcs.anl.gov [nek5000-users@lists.mcs.anl.gov]<br>
<b>Sent:</b> Monday, March 24, 2014 10:20 AM<br>
<b>To:</b> nek5000-users@lists.mcs.anl.gov<br>
<b>Subject:</b> Re: [Nek5000-users] Conjugate heat transfer problem<br>
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<div>Hi, Andrea<br>
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Thank you for your help. With your instruction, I can build a domain for conjugate heat transfer problem now. However the problem is always crash in the middle of running. I think the problem is during the Helmholtz solver for velocity which is controlled by
flag P94 in .rea file. Flag P95 controls the Helmholtz solver for pressure. If I set both P94 and P95 to zero, the case can run but the result is not right. If I set P94 to positive integer and P95 to zero which is I used to, the case is crash. If I set P95
to positive integer and P94 to zero, the case can run and the result looks fine. I have never use this setting before. I want to know is it fine to run the conjugate heat transfer problem with this setting which is P94 to zero and P95 to positive integer.<br>
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Mu Xu <br>
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<div class="gmail_quote">On Fri, Mar 14, 2014 at 6:15 PM, <span dir="ltr"><<a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank">nek5000-users@lists.mcs.anl.gov</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex; border-left:1px #ccc solid; padding-left:1ex">
Hi Xu,<br>
<br>
in Conjugate Heat Transfer problems there is no boundary condition for the energy equation at the interface between fluid and solid. The interface behaves like the one of any other internal element, which means that the boundary is just marked with 'E '.<br>
I worked a lot with Conjugate Heat Transfer. If you need help don't hesitate to contact me.<br>
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Cheers,<br>
Andrea.<br>
________________________________<br>
From: <a href="mailto:nek5000-users-bounces@lists.mcs.anl.gov" target="_blank">nek5000-users-bounces@lists.mcs.anl.gov</a> [<a href="mailto:nek5000-users-bounces@lists.mcs.anl.gov" target="_blank">nek5000-users-bounces@lists.mcs.anl.gov</a>] on behalf of
<a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank">nek5000-users@lists.mcs.anl.gov</a> [<a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank">nek5000-users@lists.mcs.anl.gov</a>]<br>
Sent: Friday, March 14, 2014 7:22 PM<br>
To: <a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank">nek5000-users@lists.mcs.anl.gov</a><br>
Subject: [Nek5000-users] Conjugate heat transfer problem<br>
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Hi, Neks<br>
<br>
I want to set up a 3-D conjugate heat transfer problem. The procedure I used is as below:<br>
1) generate a mesh for fluid domain.<br>
2) generate a mesh for solid domain.<br>
3)merge the element from 1) into 2).<br>
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I have one question during the steps 1 and 2. What the boundary condition I need to set in step 1 and 2 at the interface between fluid and solid?<br>
<br>
Mu Xu<br>
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