I want to solve only a scalar transport equation (for e.g., vapor concentration in air) with a prescribed velocity in the convection term. So, I want to switch off the Navier-Stokes solver. How to do this in Fluent.

If this question is already answered, could you provide me the link.

Thanks, Sashi

You can select/de-select equations you want to be solved in Solve > Controls > Solution ...

Thank you very much