Tube heat enchange

Questions and remarks about code_saturne usage
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Luciano Garelli
Posts: 280
Joined: Fri Dec 04, 2015 1:42 pm

Re: Tube heat enchange

Post by Luciano Garelli »

Hello,

As Yvan mentioned, you can change the time step factor (cdtvar) for the temperature to have similar characteristics times to reach a steady solution in case it exists.

In the following figure, you can see the difference in the temperature field for the same simulation time, while the velocity is the same.
fig2.png
fig1.png
Regards,
Luciano
jacob
Posts: 16
Joined: Fri Sep 02, 2022 5:29 pm

Re: Tube heat enchange

Post by jacob »

Hello, could you share the example with the mesh and everything?
Luciano Garelli
Posts: 280
Joined: Fri Dec 04, 2015 1:42 pm

Re: Tube heat enchange

Post by Luciano Garelli »

Hello,

To have rough wall option, you have to set a turbulence model and also a wall function, for default no wall function is used, soy the rough wall option is in gray.
jacob wrote: Fri Sep 23, 2022 5:11 pm
But I have no option rough wall even if I tick turbulence.
Attached is the case (The mesh correspond to the first post and should be improved).
run_solver.log
(605.48 KiB) Downloaded 53 times
setup.xml
(13.06 KiB) Downloaded 54 times
TuboM2.med
(1.79 MiB) Downloaded 53 times
Regards,
Luciano
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