<div dir="ltr"><div><div><div><div><div>Hi Ahmet, <br><br></div>What you can do that is, use the filter name called extract surface. <br></div>once you get that surface either you can export those values in form of from elements or from the points.<br><br></div>It might work, or you may get more clear explanation from this forum.<br><br></div>Cheers, <br></div>Mathi <br><div><div><div><br><br></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 6 December 2017 at 15:00, Ahmet Ahmet <span dir="ltr"><<a href="mailto:ahmetskyland@gmail.com" target="_blank">ahmetskyland@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;display:inline;float:none">Hello everyone,</span><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><div>I
have results with OpenFOAM including p,T,U outputs. Due to some
reasons, I can't use wallShearStress or wallgradU utility in OF. So, I
have to calculate it on Paraview. I saw many topics related to that on
google, but I could not find a satisfactory answer. My case is 3-D,
compressible and laminar but we can think about incompressible and may
be 2-D. </div><div><br></div><div>I think the most important part for
WSS is to calculate velocity gradient. My unsolved problem is to
calculate that. How can I calculate gradients on the wall? I have
no-slip wall, that is u=0 and with<span> </span><b>Gradient of Unstructured DataSet/Compute Derivatives </b>filters,
I obtained 0 on the wall. I think the values in the nearest mesh to the
wall should be accounted for. To do that, what should I do?</div><div><br></div><div><b>Note:</b> <br></div><div><ol><li>T<span style="color:rgb(0,0,0);white-space:pre-wrap">he walls are not aligned with a coordinate axis. For this part, I tried to </span><span style="color:rgb(0,0,0);white-space:pre-wrap">extract the wall surface and generate normal vectors. <br></span></li><li><span style="color:rgb(0,0,0);white-space:pre-wrap">As an alternative to get directly on wall, I tried to get slice a little bit over the wall surface and then take surface vector on slice then gradient of unstructured dataset on surface vector. That gives me a result but I am not sure it's true. </span></li></ol></div><div><br></div><div>This may be simple for you, sorry for that.</div><div>Thank you in advance,</div></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;text-decoration-style:initial;text-decoration-color:initial"><div><div class="m_-2537045137127734915gmail-m_4416169094697429070gmail_signature">Ahmet</div></div></div></div></div>
<br>______________________________<wbr>_________________<br>
Powered by <a href="http://www.kitware.com" rel="noreferrer" target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a href="http://www.kitware.com/opensource/opensource.html" rel="noreferrer" target="_blank">http://www.kitware.com/<wbr>opensource/opensource.html</a><br>
<br>
Please keep messages on-topic and check the ParaView Wiki at: <a href="http://paraview.org/Wiki/ParaView" rel="noreferrer" target="_blank">http://paraview.org/Wiki/<wbr>ParaView</a><br>
<br>
Search the list archives at: <a href="http://markmail.org/search/?q=ParaView" rel="noreferrer" target="_blank">http://markmail.org/search/?q=<wbr>ParaView</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a href="http://public.kitware.com/mailman/listinfo/paraview" rel="noreferrer" target="_blank">http://public.kitware.com/<wbr>mailman/listinfo/paraview</a><br>
<br></blockquote></div><br></div>