CFD Online Discussion Forums

CFD Online Discussion Forums (
-   OpenFOAM (
-   -   Courant Number Increases Rapidly (

najunaju March 29, 2013 06:06

Courant Number Increases Rapidly
I am using kwsst turbulence model, I run some simulations with mesh, it had max mesh skewness 1.8E-08. These simulations converged very well and courant number was 0.5 throughout the case.

But when the same settings I run with a mesh whose max mesh skewness is 3.5 the cournat number increases gradually and reaches a very high value.

I am using Gauss Upwind schemes. Does any body knows is this the effect of skewness? if so What schemes I may use to get converged simulation.

Any kinds of help will be highly appreciable.


olivierG April 2, 2013 05:47


You could try "skewCorrected" instead of upwind.


All times are GMT -4. The time now is 08:11.