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Setting up Case for different turbulence models with buoyancy-driven flow |
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November 19, 2012, 05:15 |
Setting up Case for different turbulence models with buoyancy-driven flow
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#1 |
New Member
Markus Trompa
Join Date: Nov 2012
Location: Regensburg, Germany
Posts: 13
Rep Power: 13 |
Hello foamers,
I am new to OF (OpenSuse 12.1 + OF-2.1.1) and write my masterthesis on it. At the moment I am setting up cases for turbulent flows in a room (inlet + outlet + obstacle), in which the obstacle has a heat flux and the inlet a constant flow rate. I want to simulate this case with different turbulence models and compare the results whicht fits best to measured data. Now, I am little stuck on pre-processing in finding the right solver and BC's to handle this problem. The BC's for U and p are no problem, and for T I used zeroGradient at the walls, at inlet fixedValue and for outlet inletOutlet. For the walls of the obstacle I defined a turbulentHeatFluxTemperature (heat source: power). Now my question is, what kind of solver suits best for this case and do I have to define alphaEff (kappaEff) and Cp or is kappaEff only defined by nu/Pr + nut/Prt in transportProperties and Cp could be easily defined by CP = 1000? In advance thank you very much for help. Markus |
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November 19, 2012, 06:10 |
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#2 |
New Member
Markus Trompa
Join Date: Nov 2012
Location: Regensburg, Germany
Posts: 13
Rep Power: 13 |
In addition, the temperature of the inlet flow is 293K and the heat source is 700W which leads to 313K on the surface of the obstacle.
The fluid medium is air and I run simulation for imcompressible fluid (neglect dependence of density). I want to handle the case transient. I think there are mainly two possibilities: a) pisoFoam and include enthalpy equation or b) buoyantBoussinesqPimpleFoam |
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Tags |
bcs, buoyancy flow, solver, turbulentheatflux |
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