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Forum: OpenFOAM Post-Processing

January 23, 2012, 17:24

Replies: 7

How to calculate CoG in interDyMFoam

Views: 2,786

Posted By gschaider

I think you'll want to write sum(alpha1*vol())...

I think you'll want to write sum(alpha1*vol()) instead of alpha1*vol(). Because if in ANY cell the alpha1 is 0 then you get a division by zero there. Apart from that...

Forum: OpenFOAM Post-Processing

January 12, 2012, 20:16

Replies: 7

How to calculate CoG in interDyMFoam

Views: 2,786

Posted By gschaider

You mean by calculating the weighted average of...

You mean by calculating the weighted average of position of all the cells? Like this:

sum(pos()*alpha1*vol())/(vol()*alpha1)

In swak4Foam there is a functionobject swakExpression where the line...

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