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April 14, 2011, 11:21 |
NACA0012 compressible static simulation
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#1 | ||
New Member
Join Date: Oct 2010
Posts: 2
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Hi everybody,
I am a new user of openFoam, and I would like to use it to do some dynamic stall simulations for a naca 0012 for M=0.7-0.85. I think that a good solver for this purpose is rhoPisoFoam with a kOmegaSST turbolence model with a later implementation of the rotation of the grid. So I was trying to launch a first static simulation at M=0.5 with rhoPisoFoam and the kOmegaSST model at zero angle of attack to validate the solver with some experimental data. Unfortunatly If I set case with the kOmegaSST model using these conditions http://turbmodels.larc.nasa.gov/sst.html I get this error, that lets me think that there is a problem with my thermoPhysicalProperties or the schemes I am using to evaluate them. I post the case without the grid (that is not my property). the length of a cell in the flow direction is approximately 0.0045 and in y direction near the wall is 0.0000055. As you can notice the grid is very fine. Other info about the grid are: Quote:
Quote:
thank you very much for any suggestions. Paolo |
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April 14, 2011, 11:29 |
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#2 |
New Member
Join Date: Oct 2010
Posts: 2
Rep Power: 0 |
Another thing that can help is this one:
when I try to launch the case using a much less fine unstructured grid, adjusting the omega wall parameter and the deltaT to a much lower value, the case works (the results converge at least). For the finer mesh case I am using a DT=1.5e-05 but the grid is so fine that I get a max Co Number of some hundreds. Thank you again. Paolo |
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