Defining mass source as mass fraction into density for species transport.
I'm using the species transport module which uses the following equation:
And I want to add source term, which requires units of [kg m^-3 s^-1] and is defined by-
Source = -2[s^-1] * MassFraction * Density
And I'm adding it through Fluent Expressions, but is giving some error and the fluent automatically closes immediately as I hit OK.
How to resolve this problem??
And if I exclude MassFraction (which has no units) from the source expression, then the simulation runs fine. But in my problem, I need to include this MassFraction term.