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-   -   dsmc properties (http://www.cfd-online.com/Forums/openfoam/78851-dsmc-properties.html)

hyperion August 4, 2010 02:12

dsmc properties
 
Hi there fellow foamers - I have a few few questions:

1) some of the boundary conditions that need to be defined seem to conflict. Why would I need to define rhoM, rhoN, and dsmcrhoN at the boundaries. It seems like the defining just one would suffice since the /constants/dsmcProperties file defines things like molecular mass and nequivalentParticles. I know I can use keyword calculated, but when I have doen this in the tutorial case freespaceStream the simulation stops after the first write step (t=.oo1).

2) Has anyone been able to use netgenNeutralToFoam when running dsmc cases? My cases always crash at the dsmcInitialise step.

3) Is the force density (fD) boundary condition basically just a pressure specification?

That's it for now. Thanks for any and all help.

archymedes August 19, 2010 09:58

I've asked my self the same question ( point 1) and also if there is any ranking, so to say if two inputs are in conflict which one is preferred.


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