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-   -   Surface Integral - Mass Flow Rate (http://www.cfd-online.com/Forums/fluent/49436-surface-integral-mass-flow-rate.html)

Venkatesh V October 6, 2008 10:36

Surface Integral - Mass Flow Rate
 
Hi All,

I am I have created a plane using Surface -> Plane. ( it create plane-19) But when I check the mass flow rate in using surface integral on that it gives some mass flow rate which is different from the mass entering the domain.

The results look resonable. Did any one has come across similar issue and any solution ?

Prasad October 10, 2008 07:06

Re: Surface Integral - Mass Flow Rate
 
This issue is not uncommon. Please specify how much is the difference between mass flow rates across the two surfaces.

Venkatesh V October 10, 2008 07:22

Re: Surface Integral - Mass Flow Rate
 
The differnce is close to 200% to 300%

Prasad October 10, 2008 16:18

Re: Surface Integral - Mass Flow Rate
 
This difference is definitely not within acceptable limits (a percent or two). Error lies either in surface creation (check coordinates) or in solution (converged?/correct models).


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