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October 2, 2019, 06:27 |
chtMultiRegionFoam in of6 at High Speeds
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#1 |
New Member
Arslan Adeel Ur Rehmann
Join Date: Jun 2018
Posts: 9
Rep Power: 8 |
Hi everyone!
I am trying to simulation flow over an airfoil using chtMultiRegion v6 at a high velocity 160ms-1. But the issue is the simulation explodes every-time. I have already tried many things like initializing solution with rhoSimpleFoam, run at low velocity and mapping the solution nothing is working at a velocity above 10ms-1. Does anyone has experience using chtMultiRegion at high velocities. Would love to hear your comments. Thanks |
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October 2, 2019, 08:27 |
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#2 |
Senior Member
Join Date: Sep 2013
Posts: 353
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High velocity is relative. Which medium is it? And what is the mach number of the flow?
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October 4, 2019, 08:32 |
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#3 |
New Member
Arslan Adeel Ur Rehmann
Join Date: Jun 2018
Posts: 9
Rep Power: 8 |
Hi
I am using air and Mach no is 0.5. |
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October 4, 2019, 09:00 |
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#4 |
Senior Member
Join Date: Sep 2013
Posts: 353
Rep Power: 21 |
Are you using the transsonic switch? Which schemes are you using? What is the mesh quality like? What are your relaxation factors?
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October 4, 2019, 09:26 |
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#5 |
New Member
Arslan Adeel Ur Rehmann
Join Date: Jun 2018
Posts: 9
Rep Power: 8 |
I have attached my fvSchemes and fvSolutions files. I am using chtMultiRegionSimpleFoam of5. My mesh quality is
MaSckewness : 0.15 Max Non-orthogonality : 50 max Aspect Ratio : 205 |
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October 4, 2019, 09:31 |
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#6 |
Senior Member
Join Date: Sep 2013
Posts: 353
Rep Power: 21 |
Try this:
Code:
div(phi,U) bounded Gauss upwind; div(phi,k) bounded Gauss upwind; div(phi,omega) bounded Gauss upwind; div(phi,h) bounded Gauss upwind; div(phi,K) bounded Gauss upwind; div(phi,Ekp) bounded Gauss upwind; |
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Tags |
chtmultiregionfoam, high speed, high velocity flow, openfoam6 |
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