User-Defined Scalar for Interfacial Area Concentration in FLUENT
I'm trying to use a two-group interfacial area concentration transport equation for a multiphase flow simulation. Currently in FLUENT, interfacial area concentrations for gas phases are provided if the user applies this in the phase descriptions for multiphase flow. However, a two-group formulation for the gas phase has inter-group coupling (for transfer between group 1 bubbles and group 2 bubbles).
Is there a way to add these sink and source terms using a User-Defined Scalar by relating the interfacial area concentration terms that are already defined in the FLUENT simulation? Or is there another way to add this behavior into FLUENT?
Thank you for any help you can provide!