CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   OpenFOAM (http://www.cfd-online.com/Forums/openfoam/)
-   -   Transient boundary conditions (http://www.cfd-online.com/Forums/openfoam/79760-transient-boundary-conditions.html)

bruxellois4 September 2, 2010 20:43

Transient boundary conditions
 
Dear Foamers,

I want to implement a transient boundary conditions (time depended inlet (p,U and T come from a real test) )

I'm using timeVaryingUniformFixedValue but i don't see how to define my internalField (uniform, nonuniform or what?)


Any idea please?!


Best regards.

Chrisi1984 September 3, 2010 05:30

Hi,

you can do both.

It is possible to start the calculation with uniform initial fields. But another good procedure is to start the transient calculation from the results of a stationary calculation, so you have nonuniform intital fields.

Regards Chrisi

sabin.ceuca September 3, 2010 10:49

Quote:

Originally Posted by bruxellois4 (Post 273811)
I'm using timeVaryingUniformFixedValue but i don't see how to define my internalField (uniform, nonuniform or what?)

The transient BC timeVaryingUniformFixedValue means that at this BC the values will be <uniform> so no parabolic shape or similar.
As for your internalField that does not matter so much because it will be adjusted according to your BC's during the simulation.
Hope I've unswered your question. :)
Ciao


All times are GMT -4. The time now is 17:41.