[sajad6]

In my linux exist openfoam201 and openfoam 210 but both of them doesn't have conjugateHeatFoam solver. I search it in solvers but I dont find conjugate .
is there any one tell me where is problem? doesnot have openfoam201 conjugateHeatFoam solver? or I didn't find it?

tnx for any help

[zfaraday]

Hello Sajad,

I think that the solver you mention was the ancestor of the current chtMultiRegionFoam solver.

Regards,

Alex

[olivierG]

hello,

No, conjugateHeatFoam is not the ancestor of chtMultiRegionFoam.
- ChtMultiRegionFoam is for multi region, with weak coupling at interface.
- conjugateFoam use strong coupling. You will find it in the extend version of OF only. (1.6-ext, foam extend 3.0 and 3.1).

regards,
olivier

[sajad6]

tnx for your reply
Can I add foam extend1.6 to openfoam201?If yes how can I?

tnx for any answer

[zfaraday]

Thanks for clarifying Olivier, it's good to know the difference between both solvers. Could you, please, tell a little further if there are more differences between them? I could be interested in installing foam extend if the solvers to solve conjugate heat transfer problems are more accurate (and fast) than they are in OpenFOAM 2.3.x.

When you say that the coupling is stronger, do you mean that the convergence is faster?

Thanks for your info Olivier.


Regards, Alex

[ahmmedshakil]

"When you say that the coupling is stronger, do you mean that the convergence is faster?"
I guess it's better to say monolithic and partitioned approach, rather than locked in strong/weak coupling.
In conjugateFoam (monolithic approach), use same primitive variables, cast governing equations in terms of these variables, solve a single coupled matrix equations.
In chtMultiRegionFoam (partitioned approach), separate governing equations, solve matrix systems, couple at the boundary interface, sub-iterate until couple convergence is reached.

Cheers,
#shakil
In

Originally Posted by zfaraday

Thanks for clarifying Olivier, it's good to know the difference between both solvers. Could you, please, tell a little further if there are more differences between them? I could be interested in installing foam extend if the solvers to solve conjugate heat transfer problems are more accurate (and fast) than they are in OpenFOAM 2.3.x.

When you say that the coupling is stronger, do you mean that the convergence is faster?

Thanks for your info Olivier.


Regards, Alex

[zfaraday]

Thanks for your detailed explanation, it is very clarifying!