Hi,
I am using the PDE solver in a system.
But I have problems with my boundarys. The system shall simulate a heat
transfer from tube to Fluid. So I wrote two systems with two seperated PDE
solvers.
I'd like to know how I may implement the following boundary condition over the
right and left faces:
the equations are:
…
tube = CellVariable(name="temperature [C]", mesh=mesh,value = 0.)
tube.equation = (ImplicitDiffusionTerm(coeff=k_r))
tube.equation.solve(var=tube,
boundaryConditions=boundaryConditionsWand,
solver=DefaultAsymmetricSolver(tolerance=1.e-100, iterations=10000))
…
and
…
Fluid = CellVariable(name="temperature [C]", mesh=mesh,value = 0.)
Fluid.equation = ImplicitDiffusionTerm(coeff=k_fg)==
rho*cp*ExplicitUpwindConvectionTerm(coeff=((v_f,)))
Fluid.equation.solve(var=Fluid,
boundaryConditions=boundaryConditionsFluid,
solver=DefaultAsymmetricSolver(tolerance=1.e-100, iterations=10000))
and now I want to implement the boundary condition, that there is a Flux in
each mesh cell from the tube to the Fluid.
What I can write is:
…
FixedFlux(faces=mesh.getFacesLeft(),
value=h_rf*a_rf*(tube(1,0,6000)-Fluid(1,0,6000))),
FixedFlux(faces=mesh.getFacesRight(),
value=h_rf*a_rf*(tube(1,0,6000)-Fluid(1,0,6000))))
…
but this is a fix Flux and I want that the Flux will be calculate in each cell
of the system.
Is this possible?
Thank for your help
Alexander
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