Wall Temperature Boundary Condition
 

In Converge, when you set the wall model (heat transfer model) for each boundary, you can choose 'global'.
And you can specify it later in turbulence setup to which model will be a global model for all boundaries (Han and Reitz, Angelberger, etc.)

But I don't really see any description about temperature wall model from Jayatilleke(even in the manual, Im using v3.1), but you can choose it in turbulence setup, while you cannot choose in boundary setup.

So my question is, if I set all boundaries' heat model as 'global', and choose Jayatilleke in turbulence setup, which model Converge will solve for the temperature wall function?

Hello and thanks for your question. If you set the heat model as "global" for all the boundaries and choose "Jayatilleke" in the turbulence setup, then CONVERGE will use "Jayatilleke" as wall heat transfer model for all the boundaries.

Thanks

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Tejas Patel, Ph.D.
Research Engineer
Convergent Science, Inc.
Madison, WI, USA
tejas.patel@convergecfd.com
www.convergecfd.com

Hi Justake1,
The manual does include the information about Jayatilleke model in 3.1 and later version of manual:
"The Jayatilleke model is applicable to general flows and accounts for the effects of wall roughness. For fluids with low Prandtl numbers (e.g ., air), the Jayatilleke model predicts lower heat transfer for rough walls than for smooth walls."

And for providing Jayatilleke model locally for specific boundary, it might be a bug in GUI interface. You can export the input files and manually edit the boundary.in, the solver should accept it and work fine.

Hope that answered your questions.