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Calculate Bubbles Centre position and Velocity

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Old   May 3, 2016, 05:18
Default Calculate Bubbles Centre position and Velocity
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Arsalan
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Hi Foamers,

I'm doing a 3D simulation of two and three bubble rising using a modified interFoam solver and I need to bubbles centre position, velocity and surface area.

For a single bubble rising I used swak4Foam expressions for example for bubble centre position in Y as follows :
Code:
    bubbleCentreY
    {
        type swakExpression;
        valueType internalField;
        verbose true;
    variables (
    "Vol= sum (alpha1 < 0.5 ? vol() : 0);"
    "VolY= sum (alpha1 < 0.5 ? pos().y*vol() : 0);"    
    );        
    expression "VolY/Vol";
        accumulations (
        min        
        );

     
    }
Is there a way to compute two or three bubble properties in this manner?

Thanks in advance,
Best Regards,
Arsalan.
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Old   May 4, 2016, 03:46
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Arsalan
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Does anybody have an idea?

Any help and comment will be greatly appreciated.

Regards,
Arsalan.
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Old   May 21, 2016, 06:28
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Arsalan
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I still didn't solve this problem, does anyone have an idea?!

Thanks in advance,
Regards.
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bubble centre, bubble velocity, swak4foam, swakexpression

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