Hi, A simple question. H
A simple question.
How is wall-functions for RANS disabled and enabled?
To me, it looks like in turbulenceProperties that wall-functions can be chosen on the same level as choosing the k-epsilon model. But I can also see in the implementation of the turbulence models that the source files for the wall-functions are included.
Thanks in advance,
All high-Re RANS turbulence mo
All high-Re RANS turbulence models include wall-functions because it is inappropriate to use them without. Only the low-Re models operate without wall-functions as they include model-specific wall treatments.
Sorry, I forgot to mention abo
Sorry, I forgot to mention about my calculation setup's detail.
1. I'm running high-Re RANS.
2. I need to apply the rough wall function only to a ground and other walls
should be calculated with normal slip wall function. So I would like
to change wall functions whether a wall is a ground or not.
Since I'm beginner about both OpenFOAM and C++ language;;,
I would like to copy and modify the wall function sources directly,
but I still need to switch wall functions with using information of
[Q] How can I switch wall functions according to wall's
information(name?) in RANS wall function sources?
Thanks for your advice,
Dear Henry and RANS-experts,
first of all, thank you for the improved near wall treatement (NWT) of kOmegaSST. I really appreciate it. :)
However, to have a reliable NWT, 2 questions may arise:
1) Production term:
Ps.: As english is not my mother tongue, some statements may sound a bit rude. If this is so, don't take it amiss. It was never my intention.
Sorry, wrong thread:)
I think it is very difficult to understand how wall function works in OpenFOAM.
When you select high Renolds number kEpsolon model, it will be automatically be used ?
Or when you select nutWallFunction, it will be automatically used ?
If velocity wall function will be automatically used, then temperature wall function how to use ?
for example, buoyantBoussinesqSimpleFoam, It doesn't have a variable for temperature to use wall function. As far as I know, alphat wall function can only be used for compressible flow. Am I right?
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