convective heat transfer in open foam

Ahmed Khattab · October 24, 2012, 13:47

Hi foamers

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

THANKS IN ADVANCE.

hawkeye321 · October 26, 2012, 10:41

You have to provide more information, first of all laminar or turbulent?

Ahmed Khattab · October 26, 2012, 18:13

Quote:

Originally Posted by mahdiiowa

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.

hawkeye321 · October 26, 2012, 23:46

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.

nimasam · October 27, 2012, 05:26

Quote:

Originally Posted by rebel ahmed

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

Ahmed Khattab · November 22, 2012, 09:01

Quote:

Originally Posted by nimasam

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,

elvis · November 27, 2012, 10:37

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!

October 24, 2012, 13:47	convective heat transfer in open foam	#1
Ahmed Khattab Senior Member ahmed Join Date: Feb 2010 Posts: 182 Blog Entries: 1 Rep Power: 16	Hi foamers What is the best way to simulate a conbective heat trasnsfer in open foam. THANKS IN ADVANCE.

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October 26, 2012, 10:41		#2
hawkeye321 Member ,... Join Date: Apr 2011 Posts: 92 Rep Power: 14	You have to provide more information, first of all laminar or turbulent?

October 26, 2012, 23:46		#4
hawkeye321 Member ,... Join Date: Apr 2011 Posts: 92 Rep Power: 14	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.

November 27, 2012, 10:37		#7
elvis Senior Member Elvis Join Date: Mar 2009 Location: Sindelfingen, Germany Posts: 620 Blog Entries: 6 Rep Power: 24	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!