|November 19, 2012, 06:26||
Setting up Case for different turbulence models with buoyancy-driven flow
Join Date: Nov 2012
Location: Regensburg, Germany
Posts: 13Rep Power: 4
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).
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
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.
|buoyantbousspimplefoam, pisofoam, solver, turbulent flow|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Is this understanding of turbulence models correct?||3kha||Main CFD Forum||3||January 31, 2011 22:31|
|Discussion: Reason of Turbulence!!||Wen Long||Main CFD Forum||3||May 15, 2009 09:52|
|Why Turbulence models are not universal.||Senthil||Main CFD Forum||4||July 5, 2000 04:34|
|fluid flow fundas||ram||Main CFD Forum||5||June 17, 2000 21:31|
|buoyancy driven flow||Jannis Dotsikas||Main CFD Forum||3||October 9, 1998 08:24|