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April 19, 2013, 12:24 |
water velocities (point data) are all zero
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#1 |
Member
Join Date: Nov 2012
Location: Liverpool, UK
Posts: 51
Rep Power: 14 |
Hi there,
I ran a case using interFoam. The mesh is 2D (only one cell in the z direction). Y-axis is 4 m high, 0-2m is water and 2-4 m is air. The free surface (using alpha1) looks good in paraview. But when I choose U-magnitude (point data) for animation, only the inlet patch and the top of air have non-zero velocities. When using U-magnitude (cell data), the water velocities are non-zero and look normal. However, I need to extract the water velocity at sampling points or over a line to do some comparison. I cannot save the cell data via 'plot over line', only point data are saved, ie., water velocites are all zero. It is really strange to me. I am thinking maybe there is something wrong with the settings in paraview as the output U files are of non-zero values. Could someone shed some light on this please? Thanks a lot in advance. Sophie |
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April 20, 2013, 04:50 |
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#2 |
Senior Member
Niels Gjoel Jacobsen
Join Date: Mar 2009
Location: Copenhagen, Denmark
Posts: 1,903
Rep Power: 37 |
Hi Sophie,
Maybe you could use the OpenFoam utility "sample" instead. This allows you to sample along a given line. You can find more information and an example of the needed dictionary here: OpenFOAM/OpenFOAM-2.2.0/applications/utilities/postProcessing/sampling/sample Kind regards Niels |
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April 20, 2013, 07:08 |
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#3 |
Member
Join Date: Nov 2012
Location: Liverpool, UK
Posts: 51
Rep Power: 14 |
Hi Niels,
Many thanks for your guidance! I'll try it. Best wishes, Sophie |
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Tags |
cell data, paraview 3.12, velocity magnitude |
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