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April 8, 2018, 04:41
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the scheme of div(tau) in high De number
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Senior Member
A. Min
Join Date: Mar 2015
Posts: 305
Rep Power: 12  |
Hi
I'm using viscoelasticFluidFoam for a shedding flow. If I use upwind for div(tau) I will have 25% error in amplitude of oscillations.  If I use URF the problem of amplitude will be solved, but I will have a big error in Strouhal number (period time)!  And If I use any other scheme for div(tau) the solution will be diverged (without URF)!  The divergence is stated in a special point and diffuses in all of the doamin:  this is the grid in this point:  I don't know what I should do. |
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| Tags |
| divergence, scheme, viscoelasticfluidfoam |
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