I have defined a fluid specific source term which includes the specific interfacial area per unit volume. I note that
the documentation says that they are not automatically multiplied by volume fraction. Do I need to multiply my
source term by the fluid volume fraction or not?
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Volumetric fluid specific sources are multiplied by the volume of the cell, not by the volume of the phase. As the documentation notes, you`d have to multiply by the volume fraction if the sources were defined per unit volume of phase. If your expression for interfacial transfer is similar to kLa (C* - C) where a is the specific interfacial area per unit volume of the two-phase mixture, then you do not need to multiply it by the fluid volume fraction since the correct volume to multiply this by is the volume of the cell. |
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