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-   -   stagnation at groovyBC (http://www.cfd-online.com/Forums/openfoam-solving/109797-stagnation-groovybc.html)

immortality November 27, 2012 03:26

stagnation at groovyBC
 
How is it possible to have a p0 and T0 boundary condition without having velocity field at inlet in groovyBC?just these stagnation properties are known.its important for me.sorry for repeat.

treima November 27, 2012 03:35

Hi,

do you mean fixedValue boundary conditions?


regards

treima

immortality November 27, 2012 04:19

hi dear treima
no.its known only stagnation temp and press on inlet patch.then I dont know haw I put velocity boundary condition.Im working on it.but ill thank any idea.
Thank you for your helping and benefitical suggestions on before posts.thanks.

treima November 27, 2012 04:21

For the velocity i would suggest zeroGradient.

immortality November 27, 2012 05:08

thank you treima
But I think velocity should read from outside of the grid domain.due to characteristic law you may know that tell at inlet 5 property should be assigned from out and only 1 from inside the domain and vice at outlet for stability of solution.
But velocity have 3 components
But ill examine your good suggestion if it didn't have stability problem all is ok.
Thanks.


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