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November 26, 2019, 07:13 |
problems with advective bc in LES
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#1 |
New Member
Jin Zhang
Join Date: May 2018
Location: Germany
Posts: 15
Rep Power: 8 |
Dear Foamers,
I am now trying to extract the domain from previous RANS results and use the truncated domain for LES simulation. I used 20 chord as the far field for RANS. Attached is the truncated domain. truncated domain.jpg The inlet U and p for LES are both mapped from RANS results. in OF, we often define p as ZG for inlet, so is that possible that I defined it as fixed Value? As the outlet is only 1 chord from the airfoil, so I want to use the convective boundary to avoid reflections. I used advective bc for U. But I don't know how to define p. should I define it as advective too? From my previous simulation, I defined it as ZG, and it showed that the results diverged from outlet. Can anyone provide some suggestions for these problems? Thanks!!! Best regards, Jin |
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Tags |
advective, les, pressure boundary |
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