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#1 |
New Member
Matthew
Join Date: May 2021
Posts: 10
Rep Power: 5 ![]() |
Hi guys,
I am currently working on a case simulating a quiescent flow using rhoCentralFoam, with the velocity of the flow equals to 0 at the start (act like a detonation in an actual experiment), across a compression corner. The case is running fine, however the flow is separated at the leading edge from the beginning of the calculation. I hypothetically think that the flow should be same as a normal case run as the first picture, yet the flow with quiescent condition is show in the second picture. (See attached files) I suspect the reason is the 0 velocity of air flow plus the no-slip condition of the wall, which made the flow separated at the leading edge. However, I am not sure if it makes sense. Therefore I would like to seek help from u guys, since the case is a bit specific and I can find nothing to take reference from. Below are the 0/ codes: 0/U Code:
dimensions [0 1 -1 0 0 0 0]; internalField uniform (0 0 0); boundaryField { inlet { type fixedValue; value uniform (539.5 0 0); } outlet { type zeroGradient; } top { type supersonicFreestream; pInf 922.4; TInf 143.1; UInf (539.5 0 0); gamma 1.4; value uniform (539.5 0 0); } wall { type noSlip; } sides { type empty; } } Code:
dimensions [1 -1 -2 0 0 0 0]; internalField uniform 922.4; boundaryField { inlet { type fixedValue; value uniform 922.4; } outlet { type waveTransmissive; field p; psi thermo:psi; gamma 1.4; fieldInf 922.4; lInf 1; value uniform 922.4; } top { type zeroGradient; } wall { type zeroGradient; } sides { type empty; } } Code:
dimensions [0 0 0 1 0 0 0]; internalField uniform 143.1; boundaryField { inlet { type fixedValue; value $internalField; } outlet { type inletOutlet; value $internalField; inletValue $internalField; } top { type inletOutlet; value $internalField; inletValue $internalField; } wall { type fixedValue; value uniform 300; } sides { type empty; } } |
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Tags |
compressible flow problem, quiescent air, rhocentrafoam |
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