[sincity]

dear guys,
i'm undergraduate student, my final project is about modeling of three phase separator since i get stuck for this thing for almost than one year and i'm very desperate to fix my problem. i hope some of you had experience in this subject (multiphase flow) could help me. thanks.

my inlet is consist of three different fluids ( gas, oil water) my goal is to plot contor of volume fraction based on the density of different fluid (water-bottom, oil-middle, gas-above)

here is my set up:
b.c-->inlet:mass flow inlet
outlet : outflow
multiphase model: VOF

i think i have set my parameter in right way but why i get my volume fraction contour wrong?