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Impose a flux at BC for the transport of a scalar |
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March 28, 2012, 10:08 |
Impose a flux at BC for the transport of a scalar
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#1 |
Senior Member
Cyprien
Join Date: Feb 2010
Location: Stanford University
Posts: 299
Rep Power: 18 |
Hi!
The problem looks very simple. I want to impose a flux at the inlet of a domain. My solver is made of an advective-diffusive equation : Code:
fvScalarMatrix TEqn ( fvm::ddt(T) + fvm::div(phi,T) -fvm::laplacian(DT,T) ); Code:
surfaceScalarField phiT = TEqn.flux(); Code:
phiT.boundaryField()[patchID] == Q; May be something like Code:
(TEqn.flux()).boundaryField()[patchID] == Q; Is anybody has an idea ?? Best regards, Cyp |
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March 28, 2012, 10:18 |
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#2 |
Member
Cedric Van Holsbeke
Join Date: Dec 2009
Location: Belgium
Posts: 81
Rep Power: 16 |
Giving a calculated value to a boundary can be achieved using the codedFixedValue boundary condition (http://www.openfoam.org/version2.0.0...me-control.php).
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March 28, 2012, 13:05 |
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#3 |
Senior Member
Cyprien
Join Date: Feb 2010
Location: Stanford University
Posts: 299
Rep Power: 18 |
Thank you for your reply.
Indeed I read the information about codedFixedValue, but I do not know how this can satisfy my request.. I think that imposing a flux should be a very easy thing in finite volume method.. |
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May 22, 2012, 15:04 |
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#4 |
Senior Member
Arne Stahlmann
Join Date: Nov 2009
Location: Hanover, Germany
Posts: 209
Rep Power: 17 |
Hi Cyprien,
any progress so far? I'm struggling with the same problem for a couple of days now, but also have not yet found a way of directly imposing a flux. I need a flux and zero-flux boundary condition, but within the solver. So far, in my case I could manage it with a source/sink term in the patch nearest cells, but that is not exactly what I wanted. Greeting, Arne |
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