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convective heat transfer in open foam

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Old   October 24, 2012, 13:47
Default convective heat transfer in open foam
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Hi foamers

What is the best way to simulate a conbective heat trasnsfer in open foam.

THANKS IN ADVANCE.
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Old   October 26, 2012, 10:41
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mahdiiowa is an unknown quantity at this point
You have to provide more information, first of all laminar or turbulent?
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Old   October 26, 2012, 18:13
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Quote:
Originally Posted by mahdiiowa View Post
You have to provide more information, first of all laminar or turbulent?
Hi,

i want to simulate heat transfer between fluid flows through tube and the tube. flow is fully developed laminar flow (GRAETZ case).

thanks in advance.
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Old   October 26, 2012, 23:46
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mahdiiowa is an unknown quantity at this point
For laminar flow you can modify icoFoam by adding the temperature source term to the momentum equation. Just make sure you have to add it where the UEqu. matrix is being constructed and NOT behind the pressure gradient term! Because in that case it will go through the PISO loop, which you certainly do not want it.
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Old   October 27, 2012, 05:26
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Quote:
Originally Posted by rebel ahmed View Post
Hi,

i want to simulate heat transfer between fluid flows through tube and the tube. flow is fully developed laminar flow (GRAETZ case).

thanks in advance.
it seems for me, it is a conjugate heat transfer, so i suggest you to use
chtMultiRegionSimpleFoam for steady solver
or
chtMultiRegionFoam for transient solver
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Old   November 22, 2012, 10:01
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Quote:
Originally Posted by nimasam View Post
it seems for me, it is a conjugate heat transfer, so i suggest you to use
chtMultiRegionSimpleFoam for steady solver
or
chtMultiRegionFoam for transient solver
but i think these solvers deal with conduction and buoyant (natural convection) heat transfer not convective (forced) heat transfer.

thanks,
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Old   November 27, 2012, 11:37
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Hi,

just want to mention that Oliver Gloth showed the coming version 1.4 of Engrid at the south german "Stammtisch=> english "group of regulars/come together/meeting"

One major feature is, that it supports meshing for CHT simulations for Openfoam.
So if you manage Engrids special usabilty, you will have a tool that supports you creating meshes for OpenFOAM CHT-simulations out of the box!
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