Fixed Flow rate and outlet Continuity Problem
Dear Foamers,
I'm modeling a centrifugal fan in a fix flow rate with OF, but I had a problem and haven't find any solution for it!!!! As I know in fluent it is modeled by these BCs: inlet: massFlowRate outlet: outflow in OF I've tested many things like: inlet: U: fixedFlowRate p: fixedFluxPressure/zeroGradient outlet: U: zeroGradient/fluxCorrectedVelocity p: zerGradient and a pRefCell and pRefValue for pressure reference. I think these Bcs are equivalent as the Fluent Bcs. When I run the MRFSimpleFoam the error would be Continuity error cannot be removed by adjusting the outflow. Please check the velocity boundary conditions and/or run potentialFoam to initialise the outflow. Total flux : 56.788705 Specified mass inflow : 0.55 Specified mass outflow : 0 Adjustable mass outflow : 0 What is the problem? Thanks for your help.!!! |
when you use a fixedflowrate type for bcs.. you cannot constraint the outlet else you'll get this error...enforcing zerograd on U does it..try using inletout types with massflow types.. cuz then u can have backflow
or convert your massflow to velocity and use, if possible : inlet Code:
u=fixedvalue Code:
u=zerograd |
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