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February 24, 2015, 01:36
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artificial viscosity
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#1 |
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Member
Divyaprakash
Join Date: Jun 2014
Posts: 69
Rep Power: 11  |
Is there a way to control the numerical dissipation in star ccm+ . I am solving for supersonic flow over a forward step, inviscid case. I get boundary layers like structures near the wall behind the step. I think it maybe due to artificial viscosity.
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February 24, 2015, 19:46
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#2 |
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Senior Member
Join Date: Nov 2010
Location: USA
Posts: 1,232
Rep Power: 24 |
If you aren't using a 1st order scheme then you shouldn't have an issue with artificial viscosity, but there is a blended accuracy factor you can adjust to get a scheme in between 1st and 2nd order in the coupled solver.
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| Tags |
| artificial viscocity, compressible, numerical dissipation, supersonic |
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