|
[Sponsors] |
Setting up Case for different turbulence models with buoyancy-driven flow |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
November 19, 2012, 05:15 |
Setting up Case for different turbulence models with buoyancy-driven flow
|
#1 |
New Member
Markus Trompa
Join Date: Nov 2012
Location: Regensburg, Germany
Posts: 13
Rep Power: 14 |
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 |
|
November 19, 2012, 06:10 |
|
#2 |
New Member
Markus Trompa
Join Date: Nov 2012
Location: Regensburg, Germany
Posts: 13
Rep Power: 14 |
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 |
|
Tags |
bcs, buoyancy flow, solver, turbulentheatflux |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
An error has occurred in cfx5solve: | volo87 | CFX | 5 | June 14, 2013 18:44 |
operating density in buoyancy driven flow | Marie-Anne | Main CFD Forum | 2 | March 24, 2006 10:52 |
Why Turbulence models are not universal. | Senthil | Main CFD Forum | 4 | July 5, 2000 05:34 |
fluid flow fundas | ram | Main CFD Forum | 5 | June 17, 2000 22:31 |
buoyancy driven flow | Jannis Dotsikas | Main CFD Forum | 3 | October 9, 1998 09:24 |