Hello!
Im trying to model a
Hello!
Im trying to model a an airflow in a channel with Re = 55000. Im not sure which turbmodel to use for this but most of the models that i have tried have ended up with results looking too laminar compared with experimental values. I might be calculating the k and epsilon BC/IC values wrongly. The way i try to calculate them is: k = 0,002*Ub*pow(2) ļ„epsilon = k*pow(3/2)/(0,3*Dh) where Ub is bulkvelocity and Dh is the hydralic diameter. So far i have treated the flow as higher turbulent and used wallFunctions with zeroGradient on k. Does anyone have a suggestion for me what to do to make my flow look more turbulent? This image illustates my flow profile. the upper patch is a wall and the three others are symmetryplanes. According to the experemental data the magnetude of U should not be higher then 25.2 m/s. http://www.cfd-online.com/OpenFOAM_D...ges/1/2768.jpg Thanks /Erik |
I forgot to mention that I wan
I forgot to mention that I want a turbmodel for incompressible flow and the calculations are to be steady state.
|
All times are GMT -4. The time now is 07:33. |