The following should work: - Gradient of Unstructured Data Set - Extract Surface - Generate Surface Normals - Calculator filter to compute the wall shear stress from the gradient and the surface normals.
On Fri, Oct 21, 2016 at 11:55 PM, Fande Kong <[email protected]> wrote: > Still have hard time on this. If anyone in this mail list knows how to do > this, I will appreciate for any suggestions. It would be great, if these is > a step-by-step example. > > Regards, > > Fande, > > On Sun, Sep 18, 2016 at 6:54 PM, Fande Kong <[email protected]> wrote: > >> Hi David, >> >> Thanks very much for your reply. I am a new paraview user. Could you >> possibly show me more details? Some documentations on each of these steps? >> >> On Sun, Sep 18, 2016 at 5:39 PM, David Thompson < >> [email protected]> wrote: >> >>> Hi Fande, >>> >>> You should be able to use the gradient filter to compute the velocity >>> gradient and examine the component of the gradient normal to the wall. That >>> will be proportional to the shear stress at the wall. Is the wall aligned >>> with a coordinate axis? >>> >> >> No, the wall is not aligned with a coordinate axis. In fact, the >> geometry is very complex. It is a pulmonary artery tree with several >> generations. >> >> Thanks, >> >> Fande, >> >> >>> If not, you will need to extract the wall surface and generate normal >>> vectors, then dot the gradient with the normal vectors. >>> >>> David >>> >>> On Sep 18, 2016, at 16:01, Fande Kong <[email protected]> wrote: >>> >>> Hi Developers, >>> >>> I am solving an incompressible Navier-Stokes equations, and I have >>> solutions for the velocity (u) and the pressure (p). Is it possible to >>> show the wall shear stress in paraview using the velocity? >>> >>> >>> Fande Kong, >>> >>> _______________________________________________ >>> Powered by www.kitware.com >>> >>> Visit other Kitware open-source projects at >>> http://www.kitware.com/opensource/opensource.html >>> >>> Please keep messages on-topic and check the ParaView Wiki at: >>> http://paraview.org/Wiki/ParaView >>> >>> Search the list archives at: http://markmail.org/search/?q=ParaView >>> >>> Follow this link to subscribe/unsubscribe: >>> http://public.kitware.com/mailman/listinfo/paraview >>> >>> >> > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at http://www.kitware.com/ > opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Search the list archives at: http://markmail.org/search/?q=ParaView > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/paraview > >
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