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Ok, thank you for your help. I will give it a try.
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<div class="">Marco<br class="">
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<div class="">On Jun 1, 2018, at 3:34 PM, <a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">
nek5000-users@lists.mcs.anl.gov</a> wrote:</div>
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Hi Marco,</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">The way I normally do this is as follows:</div>
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<li class=""><span style="font-size: 12pt;" class=""></span><span style="font-size: 12pt;" class=""></span>build a valid fluid mesh ( "f.rea" )</li><li class="">build a valid solid mesh ("s.rea")</li><li class="">run pretex and pick option "3"</li><li class="">Enter session name (say, "c" for "combined")</li><li class="">Enter fluid session name, f</li><li class="">Enter solid session name, s</li></ol>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">Hopefully, it produces a valid "c.rea" file ready for conjugate heat transfer.</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">Let me know if that doesn't work for you.</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">Best,</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">Paul</div>
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<font face="Calibri, sans-serif" style="font-size: 11pt;" class=""><b class="">From:</b><span class="Apple-converted-space"> </span>Nek5000-users <<a href="mailto:nek5000-users-bounces@lists.mcs.anl.gov" class="">nek5000-users-bounces@lists.mcs.anl.gov</a>>
on behalf of <a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a> <<a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a>><br class="">
<b class="">Sent:</b><span class="Apple-converted-space"> </span>Friday, June 1, 2018 2:10:04 PM<br class="">
<b class="">To:</b><span class="Apple-converted-space"> </span><a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a><br class="">
<b class="">Subject:</b><span class="Apple-converted-space"> </span>Re: [Nek5000-users] Mesh with two blocks</font>
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Paul,
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<div class="">thank you again for your reply.</div>
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<div class="">When I generated a mesh in Cubit that has two blocks and then run it with Nek5000 I get nelv = nelt. How does Nek5000 know that block 1 is the fluid mesh and block 2 is the solid mesh?</div>
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<div class="">I think I missing a step in the setup of my problem. I wonder how the mesh used in conj_ht was generated?</div>
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<div class="">Thanks,</div>
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<div class="">Marco<br class="">
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<blockquote type="cite" class="">
<div class="">On Jun 1, 2018, at 3:04 PM,<span class="Apple-converted-space"> </span><a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a><span class="Apple-converted-space"> </span>wrote:</div>
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Depends on which routine. Suppose userbc:</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;"> if (ifield.eq.1) then ! fluid field</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;"> else ! thermal field</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;"> endif</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;">Or... if in userchk:</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;"> integer e</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;"> do e=1,nelt</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;"> if (e.le.nelv) then ! fluid + temperature</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;"> else ! solid==temperature only</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;"> endif</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;"> enddo </div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;">Local elements are sorted: 1...nelv is fluid</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;">1...nelt is thermal</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;">nelv is <= nelt</div>
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<div class="" style="margin-top: 0px; margin-bottom: 0px;">Paul</div>
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<font face="Calibri, sans-serif" class="" style="font-size: 11pt;"><b class="">From:</b><span class="x_Apple-converted-space"> </span>Nek5000-users <<a href="mailto:nek5000-users-bounces@lists.mcs.anl.gov" class="">nek5000-users-bounces@lists.mcs.anl.gov</a>>
on behalf of<span class="Apple-converted-space"> </span><a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a><span class="Apple-converted-space"> </span><<a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a>><br class="">
<b class="">Sent:</b><span class="x_Apple-converted-space"> </span>Friday, June 1, 2018 1:53:03 PM<br class="">
<b class="">To:</b><span class="x_Apple-converted-space"> </span><a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a><br class="">
<b class="">Subject:</b><span class="x_Apple-converted-space"> </span>Re: [Nek5000-users] Mesh with two blocks</font>
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<div class="x_PlainText">Thank you for your replies.<br class="">
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I am actually interested in generating a mesh for a conjugate gradient solve. In the conj_ht example, the solid block is differentiated from the liquid block by testing the element index, i.e., ieg > nelgt. Assuming that I generate a mesh with two blocks that
represent the fluid and solid regions, respectively, how do I access these blocks in the usr file?<br class="">
<br class="">
Marco<br class="">
<br class="">
> On Jun 1, 2018, at 2:35 PM,<span class="Apple-converted-space"> </span><a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a><span class="Apple-converted-space"> </span>wrote:<br class="">
><span class="x_Apple-converted-space"> </span><br class="">
> Why don't you use the sidesets to set your BC?<br class="">
><span class="x_Apple-converted-space"> </span><br class="">
> -----Original message-----<br class="">
>> From:<a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a><span class="Apple-converted-space"> </span><<a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a>><br class="">
>> Sent: Friday 1st June 2018 20:06<br class="">
>> To:<span class="Apple-converted-space"> </span><a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">nek5000-users@lists.mcs.anl.gov</a><br class="">
>> Subject: [Nek5000-users] Mesh with two blocks<br class="">
>><span class="x_Apple-converted-space"> </span><br class="">
>> Hi,<br class="">
>><span class="x_Apple-converted-space"> </span><br class="">
>> I would like to get some insights on how Nek5000 deals with meshes that contains more than one block. I generated a 2-D mesh with Cubit and was able to convert it to a re2 format with exo2nek but I do not know how to differentiate each block in the usr file
to set boundary conditions for instance.<br class="">
>><span class="x_Apple-converted-space"> </span><br class="">
>> I went through the examples and did not find anything relevant to my question. Does anybody have experience with multi-block mesh? What is the proper approach when dealing with multi-block meshes in Nek5000?<br class="">
>><span class="x_Apple-converted-space"> </span><br class="">
>> Thanks,<br class="">
>><span class="x_Apple-converted-space"> </span><br class="">
>> Marco<br class="">
>> _______________________________________________<br class="">
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