User field function for specific heat deifnition

crevoise · January 10, 2013, 08:55

Hello,

I am defining features of my computation through user coded functions.
I have defined viscosity or conductivity for example, via external user code, which, while loaded, create different user field functions.
In the physic countinua, I then choose 'field function' for the method to solve the properties.

I wish to do the same for the specific heat, but it seems not possible to do so, as it is not possible to select the method 'field function' for this parameter (only the options 'constant' and 'polynomial' are available, and 'field function' becomes available only when EOS compressible is on, which is not for my case).
I am wondering if I really get it well, or if there is a way to user define the specific heat in ccm+,as it was possible to do so in starcd.

Thank you for any advice.

htwana · January 25, 2013, 03:20

the field function can only be used for dynamic viscosity, thermal conductivity and turbulent prandtl number. For density and specific heat, these two properties can be defined as the polynomial

crevoise · January 28, 2013, 05:25

Hello Htwana

Thanks for your notification, which confirms what I have understood so far, i.e that specific heat can't be defined through a user function.

January 10, 2013, 08:55	User field function for specific heat definition	#1
crevoise Member Join Date: Oct 2011 Location: Thessaloniki, Greece Posts: 75 Rep Power: 15	Hello, I am defining features of my computation through user coded functions. I have defined viscosity or conductivity for example, via external user code, which, while loaded, create different user field functions. In the physic countinua, I then choose 'field function' for the method to solve the properties. I wish to do the same for the specific heat, but it seems not possible to do so, as it is not possible to select the method 'field function' for this parameter (only the options 'constant' and 'polynomial' are available, and 'field function' becomes available only when EOS compressible is on, which is not for my case). I am wondering if I really get it well, or if there is a way to user define the specific heat in ccm+,as it was possible to do so in starcd. Thank you for any advice. Last edited by crevoise; January 10, 2013 at 09:48.

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January 25, 2013, 03:20		#2
htwana New Member Zhu Join Date: Jan 2013 Posts: 18 Rep Power: 13	the field function can only be used for dynamic viscosity, thermal conductivity and turbulent prandtl number. For density and specific heat, these two properties can be defined as the polynomial

January 28, 2013, 05:25		#3
crevoise Member Join Date: Oct 2011 Location: Thessaloniki, Greece Posts: 75 Rep Power: 15	Hello Htwana Thanks for your notification, which confirms what I have understood so far, i.e that specific heat can't be defined through a user function.