Surface Tension term in two phase flows
Hi,
I am simulating two phase flow using the level set method (finite volume). I have some problems in descretizing the surface tension term. Could anyone help me to find a descretized surface tension term? I do not how to descretize it correctly. Thanks, 
Re: Surface Tension term in two phase flows
Compute gradient of volume fraction function to evaluate curvature
k=grad (n) where n is the normal vector which is then = n =  (grad C) / abs(grad C) where C is the color VOF function. This is easily computed within the FV framework. Then force term in source F = sigma*k Hope this helps CFDtoy 
force term in source would be F = sigma*k*(grad C)

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