January 29, 2021 at 1:42 amcwl6750084SubscriberI 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.nnAny helps appreciate.n
January 29, 2021 at 10:40 amRobAnsys EmployeeHave a look in the material properties, there's a reference value there. The usual mistake (without phase change) is not correctly accounting for a variable cp in the hand calculation. n
January 29, 2021 at 10:03 pmcwl6750084Subscriber
January 30, 2021 at 4:49 amcwl6750084SubscriberI tried adding the values together, however, they are still way off from the tabulated values in the steam table. Even the enthalpy for pure water at the inlet are way off.n
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