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Old   September 14, 2004, 04:15
Default Scalar conductivity
  #1
Brian
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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
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Old   September 17, 2004, 11:12
Default Re: Scalar conductivity
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Jeff
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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
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Old   September 18, 2004, 07:12
Default Re: Scalar conductivity
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Brian
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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
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Old   September 19, 2004, 23:06
Default Re: Scalar conductivity
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Jeff
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Sorry. Same definition, but for your solid region. I didn't know your problem involved heat transfer solids.

Jeff
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Old   September 20, 2004, 00:19
Default Re: Scalar conductivity
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Brian
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Hello Jeff:

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

Brian
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