<div dir="ltr">Hi,<div><br><div>Following your instruction, my case is running well and the result looks reasonable. I am curious about the meaning of p94. p94 in my previous case (only fluid) set to 3 and it works well. However it cannot work in conjugate problem with positive number. Is there any problem if I set p94 to zero for my previous case? </div>
</div><div><br></div><div>Mu Xu</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Mar 24, 2014 at 11:33 AM, <span dir="ltr"><<a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank">nek5000-users@lists.mcs.anl.gov</a>></span> wrote:<br>
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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>
<div><br>
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<div>Paul</div>
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<div style="direction:ltr"><font face="Tahoma" color="#000000"><div class=""><b>From:</b> <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>
</div><b>Sent:</b> Monday, March 24, 2014 10:20 AM<br>
<b>To:</b> <a href="mailto:nek5000-users@lists.mcs.anl.gov" target="_blank">nek5000-users@lists.mcs.anl.gov</a><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_extra"><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>
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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>
<br>
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>
<br>
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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