Hello. This is my first post so I will try my best to be concise. I use Paraview 5.0.1 I am working on a two-phase fluid flow simulation where I am post-processing using Paraview. I am trying to obtain the unit normal vector at the liquid-gas interface given by n = grad(alpha)/|grad(alpha)| I ha…

If you apply the slice filter first, the result of the contour filter will be line segments, and since there are no surfaces, the normals cannot be calculated. Therefore, it is necessary to change the order of the contour filter and the slice filter. [contour_normals]

Unit normal Vector Fluid Interface

ParaView Support

M_M (M M) May 28, 2021, 1:43pm 7

I wasn’t aware that I could simply run without installing.

I have managed to get ParaView 5.9.1 but still am unable to see the normal in Vectors drop down.

I appreciate your help @mwestphal

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