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OpenFOAM v2312 - Compressible Steady case - rhoSimpleFoam issue |
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#1 |
New Member
Join Date: Jul 2024
Posts: 7
Rep Power: 2 ![]() |
Hello everybody,
I face some difficulties to set a compressible steady case using rhoSimpleFoam. Before showing detailed BC and the output issue I'd like to add the case is perfectly running with the incompressible solver Simple either with a kOmegaSST or kEpsilon turbulence model. The reason why I need to switch to a compressible solver is solve some density fluctuation in the system. Here is the output error the terminal shows : PHP Code:
PHP Code:
Velocity U: PHP Code:
PHP Code:
PHP Code:
PHP Code:
Do you have any suggestion that could help to figure out this issue ? Thank you in advance for your help |
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#2 |
Senior Member
Yann
Join Date: Apr 2012
Location: France
Posts: 1,169
Rep Power: 27 ![]() |
Hello,
The error message mentions libraries related to the thermophysicalProperties but your file seems to be fine. (it runs properly on a tutorial) This is the usual output from rhoSimpleFoam when starting: Code:
Reading thermophysical properties Selecting thermodynamics package { type heRhoThermo; mixture pureMixture; transport sutherland; thermo hConst; equationOfState perfectGas; specie specie; energy sensibleInternalEnergy; } Reading field U Reading/calculating face flux field phi I am a bit puzzled by your patches named AMI. Is it supposed to be AMI interfaces or is it wall/patches? How is it defined in your polyMesh/boundary file? If these are AMI interfaces it should be defined as cyclicAMI boundary conditions. Since the crash occurs while the solver is starting up, the problem is most likely related to some conflicts in your case setup. Regards, Yann |
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#3 | |
New Member
Join Date: Jul 2024
Posts: 7
Rep Power: 2 ![]() |
Quote:
Thank you for your reply. In fact the AMI designation, in this case, doesn't refer to AMI interface but are only used to set inlet and outlet. The reason why I set AMI names is in case of adding additionnal parts to the initial geometry. I've checked the set up and I still can't find my mistake. |
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#4 |
New Member
Join Date: Jul 2024
Posts: 7
Rep Power: 2 ![]() |
This problem is solved. The mistake came from an error in the initial p file.
It is necessary to use absolute pressure value instead of relative pressure value. In my case I change uniform 0 to uniform 101325 |
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Tags |
compressible, floating point error, openfoam, rhosimplefoam |
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