MAC method
I need a free source code of MAC Method for modeling free surface wavy falling flow. Please email me the source code or the link.
Thanks a lot Farid 
Re: MAC method

Re: MAC method
MAC was excellent, but outdated. Volume of Fluid is better. and Arbitrary Lagarangian Euler could better.
all these above three teckniques are explicit if you really are a serious researcher, I'll recommend you to use Level Set Method, which is implicit. 
references
1. volume of fluid JCP 39, 201225(1981), by C.W.Hirt
2. ALE JCP 14, 227253(1974), by C.W.Hirt 3. Level Set "Level Set Methods and fast Marching Methods" by J.A.Sethian, 2nd edition cambridge 1999 MAC was explained together with first appearance of projection method in a report by Harlow. 
Re: MAC method
"all these above three teckniques are explicit"
Actually all three are semiimplicit. By this I mean that, for each time step, the momentum equations are advanced in time explicitly. Then the pressure (continuity) eqaution is time advanced implicitly. Finally the advancedtime pressure is used for the final continuitysatisfying corrections to the velocities. So you wind up iterating only the pressure equation. But the allowable time step is limited by the explicit treatment of momentum at the beginning of each cycle. It's often a useful tradeout if you really want to see a transient solution. And that's where Harlow et al started. 
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