|August 25, 2009, 05:18||
Join Date: May 2009
Posts: 25Rep Power: 8
I try to calculate a heated channel, only the upper wall ist heated with a uniform heat flux. I try to use the new buoyantBoussinesqSimpleFoam Solver from OpenFoam 1.6.
my boundary conditions:
inlet: -fixed Value for U,k, epsilon and T
-zeroGradient for p
outlet: -zeroGradient for U,k,epsilon and T
-for p i tried to use the new bc uniformDensityHydrostaticPressure
to obtain the change of the pressure because of buoyancy, iḿ not
sure weather this is right or should i use buoyantPressure for
walls: -no slip for U
-wall functions for k and epsilon
-buoyantPressure for p, iḿ not sure which value to choose,
what value ist ist exactly? for rho i choosed rhok.
Are the boundary conditions right? What are the differences between buoyantPressure and uniformDensityHydrostaticPressure? Which one ist the better choice for outlet at my case?
thanks for any help