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May 13, 2018, 08:38 |
Spray-A AMR
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#1 |
New Member
Sangeeth Sanal
Join Date: Jul 2015
Posts: 3
Rep Power: 11 |
Hi all
I am new to converge and AMR. Can someone suggest me a good value for sub-grid criterion for AMR>velocity. I ran SprayA LES simulation with 1 m/s but the AMR is not resolving as much as I want, causing huge error in the vapor penetration calculation. |
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May 14, 2018, 17:34 |
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#2 |
Member
Shengbai Xie
Join Date: Aug 2016
Location: Convergent Science, Madison WI
Posts: 68
Rep Power: 10 |
Hi,
For a SprayA RANS modeling, we have some good experience on 1 for velocity, 2.5 for temp, and .001 for void fraction (for a VOF case). The base grid size is 0.2 mm. For LES, I think it wouldn't differ too much. If 1 doesn't work for you, try 0.5 or 0.25 if the cell count and memory are allowed. Thanks. |
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