Multiphase

This analysis type is used to simulate the time-dependent behavior of fluid mixtures, for example air and water. The analysis is carried out using the VoF (Volume of Fluid) method which is a standard approach for the computation of multiphase systems. | Page 50

Multiphase analysis of sump tank water filling with operating pumping systems. 
The tank is composed of two inlets and one outlet. There is a continuous flow from one of the inlets to the outlet. There is also some water flow falling through the other inlet due to gravity. 
The objective of the simulation is to visualize the water and air movement inside the tank.

This is a Copy from a project from @sjoshi I try to tweak the settings so i can use it

the goal of the project is to learn through making practice

just example_3 of SIMSCALE CFD MASTER CLASS

Multiphase | SimScale Project Library | Page 50