Hello everyone,
i'm trying to use the scalarTransportFoam solver of OpenFOAM to calculate the residence time of my fluid inside my domain as outlined in [1, pg. 54]. Since my input velocity field comes from a pimpleFOAM LES simulation i've outfitted my solver with an addition equation to support turbulent diffusivity [2].
The solver compiles and runs without any error but the solution does not reach a value of 1.0 if the scalar is monitored at the outlet patch [1].
I have attached my fvSchemes and fvSolution file.
Does anyone know how to fix this problem?
[1] http://www.cfd.at/downloads/2014_OFoam_Tut_Complete.pdf
[2] https://www.cfd-online.com/Forums/openfoam-solving/67964-scalartransportfoam-rtd-calculations.html#post280210
https://dl.dropboxusercontent.com/s/is4cf2uh5ruhjiy/fvSchemes?dl=0
https://dl.dropboxusercontent.com/s/xf84ur9bfdihy0h/fvSolution?dl=0
I want to provide a small update to my question: I successfully ran an transport model without any solid stl surface. The modified solver does reach the expected 100% of the input scalar. But as soon as the simulation involves a stl boundary the scalar does not reach 100% any longer.
I use a zeroGradient boundary condition. The velocity field has be created by a pimpleFoam LES simulation on the same mesh. I than use the mapFields utility to interpolate the velocity field from the LES simulation on the transport case.
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