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-   -   Temperature Dependent Fluid Properties (https://www.cfd-online.com/Forums/openfoam-solving/68122-temperature-dependent-fluid-properties.html)

 eliwide September 8, 2009 00:16

Temperature Dependent Fluid Properties

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

tempreture-dependent density for incompresible LES

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 16:41

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 :confused:;you had similar problem, if you was succeeded in resolving would you help me:o?

thanks
kind regards