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UDF to access interior surface to calculate mass flow rate

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Old   August 11, 2015, 15:44
Exclamation UDF to access interior surface to calculate mass flow rate
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Syed Shah Jehan Gillani
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Hi All

I am working to adjust counter current boundary condition for an absorber model in which gas inlet is acting as liquid outlet.

I studied forum and conclude scheme to work for counter current boundary conditions that I should calculate mass flow rate of liquid near bottom boundary and then adjust my bottom boundary through this calculated mass flow rate.

problem I am facing that I could not access interior surface (that is actually a line in case of 2D geometry) thorugh UDF to calculate mass flow rate.

Can any body help to sort out this problem?
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