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Two Phase (Liquid and Gas) Problem

	Posted Thu May 13, 2004 @01:12PM
	I need help in solving a two phase problem. I have a closed box that is half filled with liquid and has ullage space(with air) above it. I am using CFD-ACE to model flow and heat transfer. What is the most appropriate way to solve this? I tried to use VOF, but it requires a very small time step which is not feasible for my problem. Also, the two-fluid module does not seem to work in conjunction with the heat transfer module. I also tried just flow and heat transfer (without vof or two-fluid models) by making two separate domains and assigning different properties. It doesnt seem to work either. Can anyone suggest what to do here? Thanks in advance

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