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Chander August 17, 2011 19:20

Definition of thermal conductivities
 
Hi,

What is the definition of and difference between following variables listed in CFX Post:

Thermal Conductivity
Thermal Conductivity_xx
Thermal Conductivity_xy
Thermal Conductivity_xz
Thermal Conductivity_yy
Thermal Conductivity_yz
Thermal Conductivity_zz

Chander August 18, 2011 10:05

Anyone please?

Lance August 18, 2011 10:48

Well, a guess would be that you should use the _xx etc variables when the material is anisotropic (different values for different directions)

Chander August 18, 2011 11:20

Quote:

Originally Posted by Lance (Post 320644)
Well, a guess would be that you should use the _xx etc variables when the material is anisotropic (different values for different directions)

@Lance,

Thanks for your reply. Yes I also guess so. Actually the variable 'Thermal Conductivity_xx' seems the variable k_x i.e thermal conductivity in direction x which controls the heat flux in x direction -k_x(dt/dx).
Please correct me if my guess is wrong.

But what do the variables like 'Thermal Conductivity_xy' and 'Thermal Conductivity_xz' etc. mean? I am not even able to guess their meaning..


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