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Forum: OpenFOAM Running, Solving & CFD

November 29, 2012, 04:51

Replies: 19

mass flow split BC

Views: 3,706

Posted By gschaider

OK. To summarize. What I'd do (it would need a...

OK. To summarize. What I'd do (it would need a bit of playing):

- inlet: fixed velocity, p zeroGradient
- outlet1: fixed p. U inletOutlet
- outlet2: p zeroGradient. U mass flow set to x% of...

Forum: OpenFOAM Running, Solving & CFD

November 27, 2012, 12:43

Replies: 19

mass flow split BC

Views: 3,706

Posted By gschaider

Well. If you know the pressure that is necessary...

Well. If you know the pressure that is necessary to get a specific mass flow then the question is: why do you want to do CFD in the first place. Because it seems that your system is simple enough to...

Forum: OpenFOAM Running, Solving & CFD

November 27, 2012, 09:56

Replies: 19

mass flow split BC

Views: 3,706

Posted By gschaider

But resist the temptation to fix the mass flux on...

But resist the temptation to fix the mass flux on the other outlet too. Fixing the velocity on all boundaries usual ends in tears (violated mass conservation)

Forum: OpenFOAM Running, Solving & CFD

November 23, 2012, 13:02

Replies: 19

mass flow split BC

Views: 3,706

Posted By gschaider

I don't think there is something built in (but...

I don't think there is something built in (but I'm willing to be taught differently).
Such a boundary condition (or something more flexible;) ) can be constructed with groovyBC from the...

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