visualize free-surface, VOF

radiatn · April 13, 2009, 04:10

In star-ccm+ they suggest VOF=0.5 to visualize the free surface for immiscible fluids

. How about other codes (Fluent, Flow3D, CFX, Tidal, OpenFoam, etc) ? Is the same VOF=0.5 chosen to represent the free-surface? What does VOF=0.5 mean? Isn't it a surface where it is 50% air and 50% water?

jugghead · April 13, 2009, 07:33

It is an interpolation. 50% means that the cell has 50% water and 50% air so the free surface is located in the middle.

I think considering vof=0.5 is the normal thing to do.

April 13, 2009, 04:10	visualize free-surface, VOF	#1
radiatn Member Radiatn Join Date: Mar 2009 Posts: 34 Rep Power: 17	In star-ccm+ they suggest VOF=0.5 to visualize the free surface for immiscible fluids . How about other codes (Fluent, Flow3D, CFX, Tidal, OpenFoam, etc) ? Is the same VOF=0.5 chosen to represent the free-surface? What does VOF=0.5 mean? Isn't it a surface where it is 50% air and 50% water?

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April 13, 2009, 07:33		#2
jugghead New Member Join Date: Mar 2009 Posts: 27 Rep Power: 17	It is an interpolation. 50% means that the cell has 50% water and 50% air so the free surface is located in the middle. I think considering vof=0.5 is the normal thing to do.