How to simulate Marangoni effect of mixed solvents?

Hi, I would like to simulate the Marangoni effect of a mixed solvents with different surface tensions, but I can hardly find any example about this kind of simulation. In my case, I use 2 solvents, the solvent with lower boiling point will evaporate first which will cause surface tension gradient and form Marangoni flow. The temperature gradient doesn't need to be considered. I'm wondering if there is any examples similar to me or if anyone know how to build a model in COMSOL?

Thanks