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-   -   energy residuals (NaN) (https://www.cfd-online.com/Forums/fluent/149171-energy-residuals-nan.html)

cdh February 27, 2015 05:19
energy residuals (NaN)
 
Hey,
I'm calculating a coal combustion with fluent, but I noticed that there are no Residuals plotting for energy.
The solver just writes a nan instead of an Number. The energy equation is enabled so I have no clue why it won't calculate.
Does anyone has an idea?

Thanks

cdh March 2, 2015 05:12
No one? I also noticed that the energy residuals show up as soon as I disable the species transport.
I'm really confused :o

cdh March 5, 2015 06:05
Ok never mind, the problem seems to be with the UDF's for the absorption.


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