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BC: externalWallHeatFluxTemperature

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Old   March 11, 2015, 23:44
Default BC: externalWallHeatFluxTemperature
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Gautam Saikia
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Hi everyone,

I am trying to use externalWallHeatFluxTemperature bc in one of my boundary. While running the solver for buoyantBoussinesqSimpleFoam I am getting this message:-

"FOAM FATAL ERROR:
Kappa defined to employ fluidThermo method, but thermo package not available
From function temperatureCoupledBase::kappa(const scalarField&) const
in file derivedFvPatchFields/temperatureCoupledBase/temperatureCoupledBase.C at line 116."

Can anyone please suggest me how to overcome this error??

Thanking you in advance
Gautam
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Old   March 13, 2015, 06:52
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Hi,
can you please post your T file?
Which version of OF are you using?

And what models do you use for thermophysical properties?

Last edited by TobM; March 13, 2015 at 08:15.
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Old   March 16, 2015, 00:06
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Gautam Saikia
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Hello TobM

Thanks for your reply. I am attaching the "T" and "thermophysicalProperties" file here for better understanding. Please let me know if any further information required.

I am using OpenFoam version 2.3.0

Regards
Gautam
Attached Files
File Type: pdf T.pdf (20.3 KB, 30 views)
File Type: pdf thermophysicalProperties.pdf (20.6 KB, 19 views)
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Old   March 17, 2015, 03:55
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Hi,

your T file seems to be correct.
I can't say for sure what the problem is in your case, but my guess is, it has something to do with the thermophysical model.
Maybe try to change it and see if the the error still occurs. One other guess is that you can try to specify the kappa field in the boundary conditions.

Sry that I'm unable to help you.
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Old   March 18, 2015, 01:22
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Gautam Saikia
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Thanks for your suggestions Tob. I also got to know that the BC is for compressible solver only. So its not working with the incompressible solver I am trying to use. Either I need to use a different solver (but will not be helpful because I am using incompressible fluid) or I need to work with the BC to implement it for incompressible flows.
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Old   March 30, 2015, 06:53
Default externalHeatFluxTemperature
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Naresh Yathuru
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Hi gautom,

I have a similar problem of incompressible flow. could you able to implement the B:C for incompressible solvers?

This is the thread.

externalWallHeatFluxTemperature in incompressible solver

could you help me to implement the Boundary condition for Incompressible flows.

Regards,
Naresh
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Old   April 1, 2015, 02:51
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Gautam Saikia
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Hi Naresh

I gave the answer in your thread. Have a look.
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