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<p class="MsoNormal"><span lang="EN-US">Hello,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am currently learning how to use PDELab to implement Navier-Stokes equations.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">In navier-stokes folder of dune-pdelab-howto, interesting examples are already implemented but I do not understand how interpolate function works. When I run cgstokes_instat with LU2, pressure is initialized to 0 with
ZeroScalarFunction and velocity to 0 with LU_Velocity. By directly changing these initial values in cgstokes_inital.hh file, it appears pressure gets the same value of the first component of the velocity. Could you help me to understand ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I checked in the previous version of pdelab and initial functions were given to interpolate with NavierStokesDirichletFunctionAdapterFactory (deleted in the new one) and GridFunctionSpace did not have the same structure.
I did not encounter this problem. Do you think I should reuse this deleted class ?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">PDELab 2.0.0<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Dune core module 2.3.1<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks in advance for your help,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Xavier KUHN<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Software engineer at Eurogiciel<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Third part for CEA Cadarache<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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