Which is the best model in fluent for solving capillary tube problem
 

Hi all,
i am solving capillary tube problem having single phase refrigerant get vaporized and two phase flow is there. In capillary tube two phase flow is bubbly(very minute bubble of refrigerant) type means fog like appearance is there. this is only due to decrease in pressure, also temperature is decreasing. i am not clear which model should should should i use, i have tried eulerian model but that is not giving expected result.

Plz help me

Thank you