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conjugateHeatFOAM: exchange of INFO at INTERFACE?? |
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March 24, 2010, 14:37 |
conjugateHeatFOAM: exchange of INFO at INTERFACE??
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#1 |
Member
Leonardo Nettis
Join Date: Mar 2009
Posts: 72
Rep Power: 17 |
Hi all,
I'm having a look at the code of the cht solver conjugateHeatFOAM. I was expecting to find something similar to what has been done for chtMultiRegionFOAM, I mean in terms of BCs like: solidWallMixedTemperature or solidWallMixedHeatFlux. My aim is to understand which kind of info is send/received by the fluid or the solid, but from what I've seen, there is only this regionCouple BC. Any clarification is well accepted!! thanks in advance |
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March 25, 2010, 04:00 |
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#2 |
Senior Member
Henrik Rusche
Join Date: Mar 2009
Location: Wernigerode, Sachsen-Anhalt, Germany
Posts: 281
Rep Power: 18 |
Dear Leonardo,
the boundary conditions CANNOT be the same as in chtMultiRegionFoam due to the nature of coupling (implicit) and regionCouplingFvPatchField is the place to look: $FOAM_SRC/finiteVolume/lnInclude/regionCoupleFvPatchField.C Best Regards, Henrik |
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March 25, 2010, 08:19 |
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#3 |
Member
Leonardo Nettis
Join Date: Mar 2009
Posts: 72
Rep Power: 17 |
Dear Henrik,
what do you mean exactly by "implicit coupling"?? I'm not sure "implicit" has the common meaning used in CFD since we are in a coupling procedure now. ps: I found several files with the name you suggested, although in other folders, is there a reason for that?? thanks for you availability Dino |
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March 25, 2010, 09:13 |
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#4 |
Senior Member
Henrik Rusche
Join Date: Mar 2009
Location: Wernigerode, Sachsen-Anhalt, Germany
Posts: 281
Rep Power: 18 |
Dear Leonardo,
sorry, only one file here: galerius*253-> find $FOAM_SRC -name "regionCoupleFvPatchField.C" /home/foam/OpenFOAM/OpenFOAM-1.5-dev/src/finiteVolume/lnInclude/regionCoupleFvPatchField.C /home/foam/OpenFOAM/OpenFOAM-1.5-dev/src/finiteVolume/fields/fvPatchFields/constraint/regionCouple/regionCoupleFvPatchField.C Here, implicit means that we construct a combined matrix for both regions (fluid and solid) rather than building two matrices and coupling (explicitly) through the boundary conditions. Henrik |
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March 25, 2010, 11:16 |
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#5 |
Member
Leonardo Nettis
Join Date: Mar 2009
Posts: 72
Rep Power: 17 |
ok,
I started looking at the code few days ago, so I didn't know that all the files are duplicated in the lnInclude folder. However thanks for your help. Dino |
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March 25, 2010, 14:15 |
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#6 |
Senior Member
Ben K
Join Date: Feb 2010
Location: Ottawa, Canada
Posts: 140
Rep Power: 19 |
So why use conjugateHeatFoam over chtMultiRegionFoam? I'm guessing the implicit method that conjugateHeatFoam uses is supposed to be faster?
PS: I've been having problems with conjugateHeatFoam: http://www.cfd-online.com/Forums/ope...tml#post251473 |
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March 25, 2010, 14:38 |
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#7 |
Member
Leonardo Nettis
Join Date: Mar 2009
Posts: 72
Rep Power: 17 |
In my case I would use chtMultiRegionFoam because in other softwares I worked with, this kind of approach seems to be more reliable, as I can see from your results as well.
However I need to simulate an incompressible flow therefore conjugateHeatFOAM is the only chance I have in OF (apart from developing my own chtMultiRegion for incompressible !!!) Dino |
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March 25, 2010, 15:09 |
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#8 |
Member
Leonardo Nettis
Join Date: Mar 2009
Posts: 72
Rep Power: 17 |
ps: somebody knows why chtMultiRegionFOAM has been developed only for compressible flows?? before trying to modify it I would like to know if there is a serious problem in such work!!
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