Enthalpy Value Reported under Surface Integral -- CFD Online Discussion Forums

January 28, 2021, 21:39	Enthalpy Value Reported under Surface Integral	#1
cwl6750084 Member CWL Join Date: Nov 2015 Posts: 58 Rep Power: 11	I am wondering if anyone knows how does Fluent compute the enthalpy values given in Surface Integral > Temperature > Enthalpy. The values that I got from fluent for a flow through CD nozzle are in the range of -50000 to 40000 J/kg. These are way off than the values given in any steam table. Why are there negative values as well? I could not figure out what is the reference value (the thermal condition that give zero enthalpy) in Fluent to try to shift the results. Any helps appreciate.

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