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Hi Jeremie,
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<div>Try calling "fix_geom"</div>
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<div>in usrdat2 after you modify the sides... this might provide the requisite mesh clean up.</div>
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<div>Paul</div>
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<div id="divRpF308006" 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> Sunday, October 26, 2014 4:10 PM<br>
<b>To:</b> nek5000-users@lists.mcs.anl.gov<br>
<b>Subject:</b> [Nek5000-users] Curved GLL Points on Airfoil<br>
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<p class="MsoNormal">Hello Neks,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I am trying to simulate the flow around an interpolated airfoil with curved boundaries. To do so I am generating the collocation points separately and writing them into an input file, which is read in the usrdat2 subroutine before geometry
re-initialization. The only curved elements in the mesh are located at the airfoil boundary. I am not getting any errors during geometry re-initialization. However, the calculation starts off with a large courant number (around 7), which ends up diverging
after 5 times steps. Along the element edges near the airfoil, there seems to be discontinuities in the flow which cause the solution to diverge. However, when inputting non-curvilinear collocation points, written in the exact same order to the input file,
the simulation runs flawlessly. </p>
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<p class="MsoNormal">Are there any switches that must be activated in the rea file for curved elements?</p>
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<p class="MsoNormal">If not, are there any general guidelines to using curved elements in this manner?</p>
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<p class="MsoNormal">Thanks,</p>
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<p class="MsoNormal">Jeremie</p>
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