When two fluids interacts the surface tension input is given in phase defining or phase interaction?

Vivek_3486

DrAmine

Phase Interaction Property and in the IAC Panel. Try to keep input consistent and we will make it better.

Vivek_3486

I am simulating two-fluid interaction. The interfacial tension between the two fluids needs to be defined. Should I define the surface tension while defining the phase or in the phase interaction??