temperature and pressure dependent specific heat?
How to add pressure dependence in DEFINE_SPECIFIC_HEAT?
I'm doing with plasma, Cp varies with T and P drastically.....:confused: Thank you for any suggestion. 
hi.im not sure.if it was dependent to only T it was easy.but now with T and P dependence i think UDF will work.

specific heat func. of temperature
I'm working with plasma modeling and require thermodynamic properties of argon as a function of temperature (at least, but it should also be pressure dependant).
I did a simple UDF for the specific heat, but it keeps giving me the same error once I try to initializate the calculation: "Warning: Incorrect Specific Heat value" the UDF is: DEFINE_SPECIFIC_HEAT(SpecHeat_Ar,T,Tref,h,yi) { real SpecHeat,a1,b1,c1,a2,b2,c2; real x = T/1000.; /*input temp in kK*/ a1 =8.064;b1 =13.92;c1 =2.721;a2 =2.907;b2 =28.19;c2 =19.67; SpecHeat = a1*exp(pow(((xb1)/c1),2.)) + a2*exp(pow(((xb2)/c2),2.)); SpecHeat=SpecHeat/1000.; /* the specific heat material property value is in [J/kgK]*/ return SpecHeat; } I used similar eqs for thermal conductivity and viscosity. Does anybody what could be wrong?. Thanks 
I have the same problem when injected particles get vaporized, the warning "incorrect specific heat value" occures.
Any solution? 
Hi
I made a Service Request and Fluent answered that it is NOT possible to write an UDF with pressuredependend Specific Heat right now. I hope they will change this in the future. I tried it on my own, DEFINE_PRPERTY works fine but DEFINE_SPECIFIC_HEAT is crap. Use the USER FORTRAN in CFX :D 
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