tube heat ex-changer involving two fluids separated by thermal baffles

Ya_Squall2010 · January 6, 2015, 23:05

Hi everyone,

I am looking for a solver able to handle a tube heat ex-changer involving two fluids separated by thermal baffles (there's no free surface). The schematic is shown in the attached figure. Can anyone please give me some hints on this. Thanks a lot!

tube flow.png

zfaraday · January 12, 2015, 07:37

The appropriate solver is chtMultiRegion(Simple)Foam. Simple for steady state calculations.

Regards,

Alex

Ya_Squall2010 · January 12, 2015, 09:41

thanks a lot. Just wonder if the thermalBaffle BC works well as the region interface. Any experience?

zfaraday · January 12, 2015, 09:52

You have to use compressible::turbulentTemperatureCoupledBaffleMix ed as a BC in order to couple T in both sides. You can also define your baffle's properties (thermal conductivity and thickness) within the BC specification in the 0 folder.

Ya_Squall2010 · January 12, 2015, 10:04

Is there an incompressible counterpart BC available? I am dealing with water. Thanks.

wyldckat · January 31, 2015, 03:46

Quick answer: "chtMultiRegion*Foam" solvers are for compressible flow, but they should work just fine with incompressible fluids.

January 6, 2015, 23:05	tube heat ex-changer involving two fluids separated by thermal baffles	#1
Ya_Squall2010 Member YS Join Date: Jan 2010 Posts: 93 Rep Power: 16	Hi everyone, I am looking for a solver able to handle a tube heat ex-changer involving two fluids separated by thermal baffles (there's no free surface). The schematic is shown in the attached figure. Can anyone please give me some hints on this. Thanks a lot! tube flow.png

January 12, 2015, 07:37		#2
zfaraday Senior Member Alex Join Date: Oct 2013 Posts: 337 Rep Power: 21	The appropriate solver is chtMultiRegion(Simple)Foam. Simple for steady state calculations. Regards, Alex __________________ Web site where I present my Master's Thesis: foamingtime.wordpress.com The case I talk about in this site was solved with chtMultiRegionSimpleFoam solver and involves radiation. Some basic tutorials are also resolved step by step in the web. If you are interested in these matters, you are invited to come in!

January 12, 2015, 09:52		#4
zfaraday Senior Member Alex Join Date: Oct 2013 Posts: 337 Rep Power: 21	You have to use compressible::turbulentTemperatureCoupledBaffleMix ed as a BC in order to couple T in both sides. You can also define your baffle's properties (thermal conductivity and thickness) within the BC specification in the 0 folder. student666 likes this. __________________ Web site where I present my Master's Thesis: foamingtime.wordpress.com The case I talk about in this site was solved with chtMultiRegionSimpleFoam solver and involves radiation. Some basic tutorials are also resolved step by step in the web. If you are interested in these matters, you are invited to come in!

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January 12, 2015, 09:41		#3
Ya_Squall2010 Member YS Join Date: Jan 2010 Posts: 93 Rep Power: 16	thanks a lot. Just wonder if the thermalBaffle BC works well as the region interface. Any experience?

January 12, 2015, 10:04		#5
Ya_Squall2010 Member YS Join Date: Jan 2010 Posts: 93 Rep Power: 16	Is there an incompressible counterpart BC available? I am dealing with water. Thanks.

January 31, 2015, 03:46		#6
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,975 Blog Entries: 45 Rep Power: 128	Quick answer: "chtMultiRegion*Foam" solvers are for compressible flow, but they should work just fine with incompressible fluids.