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February 24, 2015, 02:36 |
artificial viscosity
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#1 |
Member
Divyaprakash
Join Date: Jun 2014
Posts: 71
Rep Power: 12 |
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, 20:46 |
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#2 |
Senior Member
Join Date: Nov 2010
Location: USA
Posts: 1,232
Rep Power: 25 |
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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