Fluent-Annular Flow
 

I,m working on a vertical pipe annular flow. The dia is 0.055m and length 6.6m. It is a two phase air-water flow with 40.8248 m/s and 0.0708 m/s velocities respectively. Similarly, the volume fractions are air-0.998273 and water-0.001726.
Which model would be most suitable to work/design annular flow?