Temperature Dependent Fluid Properties

eliwide · September 8, 2009, 00:16

I am trying to run a model with buoyantSimpleFoam with temperature dependent material properties but as a newbie I do not know where to start when editing the thermophysicalProperties file. I have the model running without any issues with constant properties but I need to model them as temperature dependent.

It seems that it is possible, since Chapter 7.1 of the user guide says that Cp can be defined by a polynomial using "hPolynomialThermo" and the thermodynamic transport properties with "polynomialTransport".

If someone could provide an example, that would be a huge start.

Thanks for the help

chiven · September 8, 2009, 21:09

Hi, dear eliwide, you can reference to the buoyantBoussinesqSimpleFoam solver, which the rho is dependent on the temperature.
best regards,
Chiven

mmahdinia · September 9, 2009, 06:42

Hi,

I am using incompressible LES solver for flow over step simulation. I have added the turbulent heat equation to the solver but still I don't know how to implement a temperature dependence for the density.

Can anyone tell me how to employ a density with a linear dependence on temperature (without using the OpenFOAM compressible codes)?

anijdon · March 23, 2011, 15:41

hello;
I want to simulate an incompressible nanofluid flow with heat transfer using simpleFoam (i.e. solver includes an energy equation). The conductivity and viscosity of the fluid is temperature dependent . I don't know haw can modify the solver and case directories to these properties become temperature dependent

;you had similar problem, if you was succeeded in resolving would you help me

?

thanks
kind regards

sahmadian · December 15, 2012, 19:21

Hi,
I am new in using OpenFOAM. The problem I am looking at is a freezing process of foods. So it is a solidification problem with temperature dependent properties. Any information in regard to the temperature dependent properties?

September 8, 2009, 00:16	Temperature Dependent Fluid Properties	#1
eliwide New Member Join Date: Jul 2009 Posts: 1 Rep Power: 0	I am trying to run a model with buoyantSimpleFoam with temperature dependent material properties but as a newbie I do not know where to start when editing the thermophysicalProperties file. I have the model running without any issues with constant properties but I need to model them as temperature dependent. It seems that it is possible, since Chapter 7.1 of the user guide says that Cp can be defined by a polynomial using "hPolynomialThermo" and the thermodynamic transport properties with "polynomialTransport". If someone could provide an example, that would be a huge start. Thanks for the help Last edited by eliwide; September 8, 2009 at 01:03.

September 9, 2009, 06:42	tempreture-dependent density for incompresible LES	#3
mmahdinia Member Join Date: Mar 2009 Posts: 46 Rep Power: 17	Hi, I am using incompressible LES solver for flow over step simulation. I have added the turbulent heat equation to the solver but still I don't know how to implement a temperature dependence for the density. Can anyone tell me how to employ a density with a linear dependence on temperature (without using the OpenFOAM compressible codes)?

March 23, 2011, 15:41		#4
anijdon Member Maryam Mousazadeh Join Date: Oct 2010 Posts: 47 Rep Power: 15	hello; I want to simulate an incompressible nanofluid flow with heat transfer using simpleFoam (i.e. solver includes an energy equation). The conductivity and viscosity of the fluid is temperature dependent . I don't know haw can modify the solver and case directories to these properties become temperature dependent ;you had similar problem, if you was succeeded in resolving would you help me? thanks kind regards

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September 8, 2009, 21:09		#2
chiven Senior Member J. Cai Join Date: Apr 2009 Posts: 180 Rep Power: 17	Hi, dear eliwide, you can reference to the buoyantBoussinesqSimpleFoam solver, which the rho is dependent on the temperature. best regards, Chiven

December 15, 2012, 19:21		#5
sahmadian New Member sorush ahmadian Join Date: Jun 2012 Posts: 5 Rep Power: 13	Hi, I am new in using OpenFOAM. The problem I am looking at is a freezing process of foods. So it is a solidification problem with temperature dependent properties. Any information in regard to the temperature dependent properties?