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Boundary Condition for Baffle Faces

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Old   August 2, 2021, 11:58
Default Boundary Condition for Baffle Faces
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Saumava Dey
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Hello!

I have developed a surface flow solver using the diffusive wave model form of the Saint Venant Equations.

For a particular test case, I need to provide an internal face within the domain that acts as a flow controller.

For creating the internal boundary, I have used the createBaffles command. On the boundary, I have specified my own gradient type boundary condition, which calculates the gradient as follows:

grad(h) = A/alpha - S0

A, alpha and S0 are fields evaluated by the solver and are called within the .C file for the developed boundary condition.

The problem I am facing is that the value of 'h' evaluated by the boundary condition remains confined to the left-hand side of the internal boundary. I need the 'h' value to be transferred to the right-hand side of the internal boundary. The internal boundary acts as a wall in this case, which I don't want in my case.

I seek urgent suggestions regarding this.

Please help.

I am kind of stuck in it.
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