CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   OpenFOAM (http://www.cfd-online.com/Forums/openfoam/)
-   -   forward step tutorial (http://www.cfd-online.com/Forums/openfoam/111799-forward-step-tutorial.html)

anishtain4 January 15, 2013 16:34

forward step tutorial
 
I'm trying to run the forward step tutorial with rhoCentralFoam but in non-normalised form. To achieve this I tried to change some settings

in thermophysical dictionary for air as:
cp=1.006
molWeight= 28.97

since the adiabatic index for air is 1.4 then with:
Cp=ghama*nMol*R/(ghama-1)/molWeight

one would have: nMol=0.001

for a normal condition in initial conditions also T=273, U=990 ( to have Ma=3) and to have rho=1.2 from P=rho*R*T/molWeight would yield p=94022

in an inviscid flow characteristic length is not important, but the angles and proportions so no modification is needed on geometry. After setting all these you can't have a run. Can anyone please tell me why?

anishtain4 January 17, 2013 13:44

No one can try it and tell me something? pleaseeee

dhuckaby January 17, 2013 17:02

Have you tried cp = 1006 J/(kg-K) and nMoles = 1 ?


All times are GMT -4. The time now is 23:15.