Cannot change Specific Heat Capacity option to NASA polynomials in CFX 14.5.7

khedar · March 11, 2017, 03:42

Hi, I need to use temperature dependent Cp(specific heat capacity) for my simulation. But in the material properties, the only option I get is "Value". I read the modelling guide and it says that there should be other options as well. Is this some version issue?

Thanks

highorder_cfd · March 13, 2017, 09:36

Can you not set an expression there?

Opaque · March 13, 2017, 12:06

If I recall correctly, the NASA and/or Zero Pressure Polynomials options are ONLY allowed for ideal gas materials.

Is you equation of state Ideal Gar, or constant density material ?

khedar · March 15, 2017, 08:43

I am using ideal gas but still cannot see the option. Finally I did using expressions. Thanks guys for the help

March 11, 2017, 03:42	Cannot change Specific Heat Capacity option to NASA polynomials in CFX 14.5.7	#1
khedar Senior Member khedar Join Date: Oct 2016 Posts: 111 Rep Power: 9	Hi, I need to use temperature dependent Cp(specific heat capacity) for my simulation. But in the material properties, the only option I get is "Value". I read the modelling guide and it says that there should be other options as well. Is this some version issue? Thanks

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March 13, 2017, 09:36		#2
highorder_cfd Member Join Date: Jan 2015 Posts: 63 Rep Power: 11	Can you not set an expression there?

March 13, 2017, 12:06		#3
Opaque Senior Member Join Date: Jun 2009 Posts: 1,803 Rep Power: 32	If I recall correctly, the NASA and/or Zero Pressure Polynomials options are ONLY allowed for ideal gas materials. Is you equation of state Ideal Gar, or constant density material ?

March 15, 2017, 08:43		#4
khedar Senior Member khedar Join Date: Oct 2016 Posts: 111 Rep Power: 9	I am using ideal gas but still cannot see the option. Finally I did using expressions. Thanks guys for the help