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Free surface drag forces

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Old   March 7, 2002, 18:17
Default Free surface drag forces
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Hi, I would like to know if someone has already modified the drag forces in a free surface (VOF) simulation. I'm modeling a film of liquid flowing over an inclined surface and surrounded by air, and want to change the drag forces in both liquid-gas and liquid-solid interfaces. I think I need to go for a UDF but I wonder about the algorithm as in VOF I only have a single momentum transfer equation.

Thnx in advance for any help.

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