Multiphase

Pravesh kumar

hi I am using eulerian model.As in my domain air and water are coming in from the top (Boundary condition-Velocity inlet).I have to input the volume fraction of secondary phase and dia of secondary phase . 1.Which volume fraction i have to input .Is it fraction of water in air-water mix.As air and water have different velocities so it will not remain same as the phase with high velocity will not permit the phase with low velocity to come in. 2.I have to input the dia of secondary phase (ie water) Which dia is it?

Thanks in advance. waiting for reply Pravesh