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#1 |
New Member
Tommy M
Join Date: Sep 2018
Posts: 9
Rep Power: 2 ![]() |
Hi All,
I have a question about compressible solvers. Could anyone know if RhoPimpleFoam is considered as a pressure-based or a density-based solver? Thank you in advance. |
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#2 |
Senior Member
Cyprien
Join Date: Feb 2010
Location: Stanford University
Posts: 281
Rep Power: 13 ![]() |
It is a pressure-based solver because you solve an equation for the pressure. The solver is named rhoPimpleFoam because it handles compressible fluid and in this case the pressure equation depends on the time variation of the density (related to the time variation of the pressure using a compressibility factor).
Cheers, Cyprien
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www.cypriensoulaine.com/openfoam |
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#3 |
New Member
Tommy M
Join Date: Sep 2018
Posts: 9
Rep Power: 2 ![]() |
Ok. Thank you very much for your help.
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#4 | |
Senior Member
Lucky Tran
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 3,100
Rep Power: 39 ![]() ![]() |
Pressure-based vs density-based are historical names and really shouldn't be used anymore. And really it only comes up when someone is coming from a Fluent background. If you are asking if rhoPimpleFoam behaves more like Fluent's pressure-based or more like Fluent's density-based solver then the answer is that it is closer to Fluent's pressure-based solver.
Quote:
You can get more precise answers by asking what is the exact technique used to solve the coupled set of pde's (continuity, momentum, energy, etc.). In Fluent, the pressure-based solver is a segregated solvers and density-based solver is a coupled solver. |
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