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-   -   How to run CFX for inviscid cases? (http://www.cfd-online.com/Forums/cfx/22870-how-run-cfx-inviscid-cases.html)

MouseInMilk July 21, 2006 18:36

How to run CFX for inviscid cases?
 
How to run CFX for inviscid cases?

Thanks.

PetrK July 22, 2006 15:31

Re: How to run CFX for inviscid cases?
 
Set the air viscosity for something about 10^-15

mouseinmilk July 22, 2006 19:51

Re: How to run CFX for inviscid cases?
 
Thanks But the wall condition is no-slip boundary condition which is different from the Euler solution.

Mike July 24, 2006 09:08

Re: How to run CFX for inviscid cases?
 
Do not set the air viscosity to 10e-15. This will make the Reynolds number huge. You actually need to adjust the viscosity such that you get a Reynolds number around 1000 (the code works best for this type of case around this Re number). Set all your walls to free-slip and use the Laminar (None) as the turbulence model. Also use BC's that do not introduce any rotation into the flow, so Total Pressure inlet and Static Pressure or Mass Flow outlet. Mike

mouseinmilk July 29, 2006 00:56

Re: How to run CFX for inviscid cases?
 
Thanks a lot. I will try that again. Best wishes.


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