[wyldckat]

Greetings to all!

@Nestor: My apologies for not getting back to you sooner on your post, but these past few years have been hectic on my side...

Either way, I've did feel the need myself to update this utility to OpenFOAM 5, so I've now published the updated code for OpenFOAM 5 and 6, provided here: https://github.com/wyldckat/wallHeatFluxIncompressible

Best regards,
Bruno

[kakkapriyesh]

Originally Posted by eelcovv

Hi,

I modified the standard wallHeatflux utility which comes default with OF into a version for incompressible flows already a while ago. Also removed a bug out of the code. Well, have a look at the code, it works for me.

One remark though: the utility does not seem to work when you use groovyBC for your temperature boundary conditions. It does not crash, but the resulting wall heat flux will not be correct. In case you want to use this utility in combination with groovyBC, you have to edit your results file T and change all groovyBC bc's into fixedValues (while leaving the non-uniform list of temperature at the wall as generated by groovyBC). Then the generated heatflux will be correct.

Eelco

Hi thanks alot,it works for postProcess now, I want to incorporate it to calculate average wall heat flux over a period of time(hence Nusselt number),by taking fieldaverage at each timestep. how to proceed for it? is there any other way i can calculate it? I am a newbie at OpenFoam4.x and am using LES and buoyantBoussinesqPimpleFoam.

[wyldckat]

Quick answer: See this thread: Time-average of a patch (wallHeatFlux)

[little_fish]

hello,



i m a new user of openfoam, and i have some problem to compill the wallheatfluxincompressible function.

i work currently on openfoam2212.




on the git, i only see instruction for openfoam 2, 5 and 6.



Some one know if i can use this function on a openfoam.com version, not .org..



regards

[thiagopl]

Hi,

This is an old thread when OF had the solver buoyantBoussinesqSimpleFoam. The function wallHeatFlux didn't work on it. In OF 10 we have only the buoyantFoam solver and the function wallheatfluxincompressible is not necessary anymore, just use wallHeatFlux.
The heat transfer solvers in OF changed a lot since 2015. It is better to keep up to date.

Regards.

[little_fish]

thank you for your answer.

So you really think i can use wall heat flux in a compressible case ?

because i tried once and i had some error about using the wrong solver..
i will send the message i had in this case, may be i have configurate wrong my simulation..

regards

[thiagopl]

Yes, you can find good tutorials here: https://upcommons.upc.edu/bitstream/...REPORT_260.pdf

You may have to adapt something to run in OpenFoam 10, but they help a lot.

[little_fish]

Ok, i found a solution



thank you



regards