CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM

conjugateHeatFOAM: exchange of INFO at INTERFACE??

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   March 24, 2010, 14:37
Default conjugateHeatFOAM: exchange of INFO at INTERFACE??
  #1
Member
 
Leonardo Nettis
Join Date: Mar 2009
Posts: 72
Rep Power: 7
dinonettis is on a distinguished road
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
dinonettis is offline   Reply With Quote

Old   March 25, 2010, 04:00
Default
  #2
Senior Member
 
Henrik Rusche
Join Date: Mar 2009
Location: Braunschweig, Niedersachsen, Germany
Posts: 273
Rep Power: 8
henrik is on a distinguished road
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
henrik is offline   Reply With Quote

Old   March 25, 2010, 08:19
Default
  #3
Member
 
Leonardo Nettis
Join Date: Mar 2009
Posts: 72
Rep Power: 7
dinonettis is on a distinguished road
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
dinonettis is offline   Reply With Quote

Old   March 25, 2010, 09:13
Default
  #4
Senior Member
 
Henrik Rusche
Join Date: Mar 2009
Location: Braunschweig, Niedersachsen, Germany
Posts: 273
Rep Power: 8
henrik is on a distinguished road
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
henrik is offline   Reply With Quote

Old   March 25, 2010, 11:16
Default
  #5
Member
 
Leonardo Nettis
Join Date: Mar 2009
Posts: 72
Rep Power: 7
dinonettis is on a distinguished road
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
dinonettis is offline   Reply With Quote

Old   March 25, 2010, 14:15
Default
  #6
Senior Member
 
Ben K
Join Date: Feb 2010
Location: Ottawa, Canada
Posts: 140
Rep Power: 9
benk is on a distinguished road
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:
Integrated conjugate heat transfer solver in OpenFOAM
benk is offline   Reply With Quote

Old   March 25, 2010, 14:38
Default
  #7
Member
 
Leonardo Nettis
Join Date: Mar 2009
Posts: 72
Rep Power: 7
dinonettis is on a distinguished road
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
dinonettis is offline   Reply With Quote

Old   March 25, 2010, 15:09
Default
  #8
Member
 
Leonardo Nettis
Join Date: Mar 2009
Posts: 72
Rep Power: 7
dinonettis is on a distinguished road
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!!
dinonettis is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wind turbine simulation Saturn CFX 32 October 8, 2013 07:53
conjugateHeatFOAM: exchange of INFO at INTERFACE?? dinonettis OpenFOAM Programming & Development 0 March 19, 2010 13:11
RPM in Wind Turbine Pankaj CFX 9 November 23, 2009 04:05
OpenFOAM with Cygwin kitchener OpenFOAM Installation 6 April 24, 2006 23:09
Replace periodic by inlet-outlet pair lego CFX 3 November 5, 2002 20:09


All times are GMT -4. The time now is 17:11.