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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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<div class="">On Jun 1, 2018, at 3:04 PM, <a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">
nek5000-users@lists.mcs.anl.gov</a> wrote:</div>
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Depends on which routine. Suppose userbc:</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class=""> if (ifield.eq.1) then ! fluid field</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class=""> else ! thermal field</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class=""> endif</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">Or... if in userchk:</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class=""> integer e</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class=""> do e=1,nelt</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class=""> if (e.le.nelv) then ! fluid + temperature</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class=""> else ! solid==temperature only</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class=""> endif</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class=""> enddo </div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">Local elements are sorted: 1...nelv is fluid</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">1...nelt is thermal</div>
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<div style="margin-top: 0px; margin-bottom: 0px;" class="">nelv is <= nelt</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 1:53:03 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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<div class="PlainText">Thank you for your replies.<br class="">
<br class="">
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, <a href="mailto:nek5000-users@lists.mcs.anl.gov" class="">
nek5000-users@lists.mcs.anl.gov</a> wrote:<br class="">
><span class="Apple-converted-space"> </span><br class="">
> Why don't you use the sidesets to set your BC?<br class="">
><span class="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> <<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: <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="Apple-converted-space"> </span><br class="">
>> Hi,<br class="">
>><span class="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="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="Apple-converted-space"> </span><br class="">
>> Thanks,<br class="">
>><span class="Apple-converted-space"> </span><br class="">
>> Marco<br class="">
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