multiRegion with change phase

Cartuns11 · October 28, 2015, 11:35

Hi everybody,

I'm working on a thermal exchanger (water/air). It consists in two cylinders, one of then is inside the other. The air goes through the water cylinder via a tube. Initially, the air is 600K and the water is 300K but at the end, water gets 420K......water should evaporate but it doesn't.

I'm using chtMultiRegionSimpleFoam because my model has 2 domains (air tube, water cylinder) but it doesn't take into account the change phase.

I wonder how I can carry out a simulation with both concepts (multiRegion and change phase). Is there a solver, which can do it? or the only way, is the modify the code?

Thanks
Cartuns

Cyp · October 28, 2015, 12:37

may be by not using a multi region solver but a VOF approach? At least this is what you'll learn if you do a literature review.

tjliang · January 10, 2016, 14:27

Quote:

Originally Posted by Cartuns11

Hi everybody,

I'm working on a thermal exchanger (water/air). It consists in two cylinders, one of then is inside the other. The air goes through the water cylinder via a tube. Initially, the air is 600K and the water is 300K but at the end, water gets 420K......water should evaporate but it doesn't.

I'm using chtMultiRegionSimpleFoam because my model has 2 domains (air tube, water cylinder) but it doesn't take into account the change phase.

I wonder how I can carry out a simulation with both concepts (multiRegion and change phase). Is there a solver, which can do it? or the only way, is the modify the code?

Thanks
Cartuns

Hello,

I am also looking for a good solver dealing with multi-region problems and phase change effect. Have you found out one solver or any good idea?

Thanks ,

Peng

rapierrz · January 10, 2016, 16:37

Hi,

I wrote a solver with temperature base phase change and then combine it

with conjugateHeatFoam solver that wroten by Hrvje Jasak,I validate phase

change section of this solver But I don't know it's conjugate section work

correctly or not!

Mojtaba.a · June 24, 2018, 08:47

Quote:

Originally Posted by rapierrz

Hi,

I wrote a solver with temperature base phase change and then combine it

with conjugateHeatFoam solver that wroten by Hrvje Jasak,I validate phase

change section of this solver But I don't know it's conjugate section work

correctly or not!

Any updates on this issue?

October 28, 2015, 11:35	multiRegion with change phase	#1
Cartuns11 New Member Join Date: May 2015 Location: Barcelona Posts: 24 Rep Power: 11	Hi everybody, I'm working on a thermal exchanger (water/air). It consists in two cylinders, one of then is inside the other. The air goes through the water cylinder via a tube. Initially, the air is 600K and the water is 300K but at the end, water gets 420K......water should evaporate but it doesn't. I'm using chtMultiRegionSimpleFoam because my model has 2 domains (air tube, water cylinder) but it doesn't take into account the change phase. I wonder how I can carry out a simulation with both concepts (multiRegion and change phase). Is there a solver, which can do it? or the only way, is the modify the code? Thanks Cartuns

October 28, 2015, 12:37		#2
Cyp Senior Member Cyprien Join Date: Feb 2010 Location: Stanford University Posts: 299 Rep Power: 18	may be by not using a multi region solver but a VOF approach? At least this is what you'll learn if you do a literature review. Last edited by Cyp; October 29, 2015 at 06:34.

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January 10, 2016, 16:37		#4
rapierrz Senior Member Hesam Join Date: Feb 2015 Posts: 139 Rep Power: 11	Hi, I wrote a solver with temperature base phase change and then combine it with conjugateHeatFoam solver that wroten by Hrvje Jasak,I validate phase change section of this solver But I don't know it's conjugate section work correctly or not!