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Soghrat April 17, 2007 10:46

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,


CFDtoy April 20, 2007 12:28

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

isabel July 7, 2009 10:20

force term in source would be F = sigma*k*(grad C)


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