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New Member
Paul
Join Date: Apr 2012
Posts: 27
Rep Power: 14 ![]() |
Hello all,
I have the following problem: I calculate steam turbine in ANSYS CFX and when performing the post-processing I encountered large discrepancies between correlating variables. Suppose I want to derive static enthalpy at my inlet boundary using the static entropy, temperature, pressure and density with the following formula (all parameters are massflow-averaged except pressure which is surface-averaged): ![]() but when I calculate the static enthalpy using the formula massFlowAve(Static Enthalpy)@INLET, I get the value which is two times lower than that of the expression above. One of my ideas was that I didn't take into account the reference entropy and temperature to subtract it from the expression, but in CFX Theory Guide it is written that reference enthalpy and entropy for IAPWS library are set to 0 [J/kg]: Quote:
Maybe someone encountered such problem and can help me with that. Thanks in advance, Delcraft |
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Tags |
enthalpy equation, iapws, reference values |
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