|May 1, 2014, 10:34||
High Courant numbre, icoFoam NACA4415
Join Date: Apr 2014
Posts: 1Rep Power: 0
Hello, I'm new in openFoam, I have to simulate a NACA4415 airfoil with icoFoam in Re200, for university work.
The airfoil is modeling like a rhombus whose vertex are joined to splines in blockmesh/edges. In paraFoam the geometry and the mesh look very good.
At the beginning the case is well simulated using a low dT (0.0001) because i am using a very concentrated mesh in the airfoil, and my Courant number is a bit little, but there is a moment in which it increases very fast, and the simulation fails.
Furthermore when I open paraFoam it is as the fluid doesn't flow well, it is very strange.
I have used checkMesh to verify the mesh and it says that it's ok...
If somebody can help me i will be very thankful because I don't know what to to do...
This is the error
A picture of my mesh
And my codes U, P and controlDict
Last edited by Unknox90; May 4, 2014 at 06:58.
|June 26, 2014, 12:41||
Join Date: Sep 2010
Posts: 391Rep Power: 11
You set the pressure to fixedValue on both, the inlet and the outlet. This will not work (in nearly all cases). Try setting the pressure to zeroGradient at the inlet.
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