What is the "inner surface"? Do you mean that there is a hollow part in the middle and you want the surface between the mesh and the empty space in the middle? If that is the case, then Extract Surface will extract that as well. You just might not be able to see it if it is completely encased in another mesh. You would have to clip away (or make transparent) the outer surface to see anything inside.
If that is not what you mean by inner surface, then I have no idea what you mean. You could construct an infinite number of surfaces from the interior of a mesh. -Ken On 12/8/09 4:35 AM, "Martijn Brouwer" <[email protected]> wrote: Hi Ken and others, If I apply these filters to my data set: Data -> Gradient -> Surface Flow, the result (shown in on the information tab of the Surface Flow object) is 0. With another 3D data set I did not succeed in calculating the flow either. I imagine that I need to do something like: Data set -> Gradient -> Extract Surface -> Integrate Flow How do I extract the correct surface? The extract surface filter description says that in extracts the total outer surface. In my case this results in a nett flow of 0. I have a hollow cylinder and need to calculate the flow over the inner surface and (a part of) the outer surface. How can I achieve this? Martijn On Mon, 2009-11-30 at 11:24 -0700, Moreland, Kenneth wrote: > All coordinates in VTK/ParaView are in R^3. However, if you define > your data in the x-y plane (that is, z == 0 for all coordinates) then > Surface Flow should give you the correct answer. > > -Ken > > > On 11/26/09 10:31 AM, "Martijn" <[email protected]> wrote: > > Hi, > This week I discovered ParaView and I am impressed (and a > little > intimidated) by its possibilities. > A question: is a 2D equivalent of the "Surface Flow" filter? I > have a > small 2D thermal simulation and would like to caluclated the > flow over a > boundary: int (dT/dx, dT/dy)*n dl. > > with kind regards, > > Martijn > > _______________________________________________ > 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 > > Follow this link to subscribe/unsubscribe: > http://www.paraview.org/mailman/listinfo/paraview > > > > > **** Kenneth Moreland > *** Sandia National Laboratories > *********** > *** *** *** email: [email protected] > ** *** ** phone: (505) 844-8919 > *** web: http://www.cs.unm.edu/~kmorel > **** Kenneth Moreland *** Sandia National Laboratories *********** *** *** *** email: [email protected] ** *** ** phone: (505) 844-8919 *** web: http://www.cs.unm.edu/~kmorel
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