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Source in boundary due to moving wall

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Old   February 11, 2013, 05:59
Default Source in boundary due to moving wall
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Hrushi
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Hi all,

I am modeling a physical system in which I am solving Navier-Stokes with one scalar field(c). I have three questions regarding this system.

1. The scalar manifests itself as a source term in NS equation. And the source term is non-linear in scalar. Now, should I define another linearised source term variable:
G=f(c)
(may contain third and higher derivatives)
and do the simulation or should I just include it in terms of c?

2. Scalar has a boundary condition which actually results into a convection equation with source term at moving wall.
c(t)+u*c(x)=S(c)
Is there a way to implement this in openfoam using current boundary conditions?

3. How good is openfoam in handling third and fourth order derivatives?

Thanks and regards,

Hrushi
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