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Surface Tension term in two phase flows

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Old   April 17, 2007, 10:46
Default Surface Tension term in two phase flows
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Soghrat
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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,

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Old   April 20, 2007, 12:28
Default Re: Surface Tension term in two phase flows
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CFDtoy
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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
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Old   July 7, 2009, 10:20
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isabel
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isabel is on a distinguished road
force term in source would be F = sigma*k*(grad C)
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