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Brian September 14, 2004 04:15

Scalar conductivity
 
HELLO!!

I have a quenstion in "common file".What is the "scalar conductivity "meaning??And its physical meaning??? Can anybody answer me?? Thanks in advanced

Brian

Jeff September 17, 2004 11:12

Re: Scalar conductivity
 
I'm guessing you are using CFX-4 and speaking about the "command file" which contains the CFX-4 commands language......

The scalar conductivity is simply the thermal conductivity of the fluid. It's "scalar" because it is isotropic. This means the conductivity is the same in all directions.

Jeff

Brian September 18, 2004 07:12

Re: Scalar conductivity
 
Hello Jeff :

Thanks for your message!!! But when I change parameter in my common fileĦAI also saw the "thermal conductivity" of HEAT TRANSFER PARAMETERSĦCIf you say that the "scalar conductivity" is the thermal conductivity of the fluidĦAwhat is the thermal conductivity meaningĦAand what are different between them??Anyway thanks for your responseĦAand like below is part of my common file :

>>PHYSICAL PROPERTIES

>>FLUID PARAMETERS

VISCOSITY 1.0000E+00

DENSITY 1.0000E+00

>>HEAT TRANSFER PARAMETERS

THERMAL CONDUCTIVITY 2.000E+01

FLUID SPECIFIC HEAT 1.0000E+00

ENTHALPY REFERENCE TEMPERATURE 2.9800E+02

>>SOLID HEAT TRANSFER PARAMETERS

PATCH GROUP NUMBER 1

SPECIFIC HEAT 4.400E+02

DENSITY 7.8500E+03

SCALAR CONDUCTIVITY 1.0000E+00

SOLID TEMPERATURE 2.98000E+02

Brian

Jeff September 19, 2004 23:06

Re: Scalar conductivity
 
Sorry. Same definition, but for your solid region. I didn't know your problem involved heat transfer solids.

Jeff

Brian September 20, 2004 00:19

Re: Scalar conductivity
 
Hello Jeff:

Thanks a lot!! I think the problem has been solvedĦAthanks for your help!!!

Brian


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