compressible multiphase flow
 

Hello everyone
I simulate a two phase ejector which has two inlets the first one is converging-diverging nozzle(to make flow super sonic) that vapor water enters with pressure boundary condition(140Kpa) . the second inlet is liquid water with pressure boundary condition(96Kpa) and one outlet with pressure outlet boundary condition(96Kpa) . i use very low under-relaxation factors but i cant converge the problem.
can anyone tell me what should i do?