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Old   October 10, 2006, 21:44
Default What kind of boundary conditio
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shuo
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What kind of boundary conditions should I use for the walls and outlets of the shocktube case in sonicFoam, rhoSonicFoam...? It keeps giving me singularity errors when I use extrapolatedOutlet for the two exits and wall for the four walls.
Shuo
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Old   October 10, 2006, 22:18
Default Dpends on your application. I
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Dr B.M. Smith
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Dpends on your application. If you want to model a closed shocktube then use reflective BC's, and expect reflected shocks, otherwise use open BC's, say with continuous velocity and pressure.

I don't know why extrapolaedOutlet wouldn't work, you'd have to ask the OpenCFD people about that.
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