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Relationship between flow and turbulence solvers

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Old   May 22, 2021, 08:49
Post Relationship between flow and turbulence solvers
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Zhen ZHANG
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Hi all,
When simulating a turbulent flow, the flow solver and the turbulence solver should be built. My questions are how these two solvers are arranged in the solver pointer, and how they transfer data.
Can anyone give me some clues? Or which part of the codes can be referred to?

Thanks in advance!
zhen
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Old   May 22, 2021, 09:12
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Maybe you can start in the file cSolverFactory.cpp. There you see that a solver class is created for each of the solvers: a flow solver (e.g. incompressible Euler), a turbulence solver (e.g. SA model), etc. they are collected in solver_container.

The solvers are independent, but information is transferred. For the flow solver, we need the turbulent viscosity. The solver_container is basically an array containing your solvers. So inside the flow solver, you can access information from the turbulence solver through the solver_container, for instance by saying:
Code:
solver_container[TURB_SOL]->GetNodes()->GetmuT(iPoint);
And in the turbulence model, we access the solution of the flow solver in a similar way.


Is this pointing you in the right direction?
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Old   May 22, 2021, 11:25
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Zhen ZHANG
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Yes, I understand, Thank you!
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Old   May 23, 2021, 08:54
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Zhen ZHANG
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Hi,
I have another related question, what are the indexes of the solver container such as solver[iZone][iInst][MESH_0][FLOW_SOL]?
Zone is for multiphysics, Mesh is for multigrid, and SOL is for different solver types. Is it right? And what is the instance?
Thanks!
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Old   May 23, 2021, 11:30
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Time instance for harmonic balance.
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Old   May 23, 2021, 21:58
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Zhen ZHANG
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Got it. Thank you!
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