Error on chtMultiRegionFoam compared to the chtMultiRegionSimpleFoam

flanel1988 · May 30, 2016, 06:18

Hey Guys!
I have a very easy case: I have one solid region (tube, named "fest") and one fluid region (inside the tube, called "fluessig"). The fluid moves with a defined speed and an given temperature. With the

Code:

compressible::turbulentTemperatureCoupledBaffleMixed;

bondary-condition for the joining patch between the two regions, it seemed to work, that the solid heats up to the maximum of 1293K of the maximum temperature of the fluid after ~20h. This seemes all right for disregarding of the radiation.
But all this does only work when using the chtMultiRegionSimpleFoam solver. I need to use the chtMultiRegionFoam in the future and i am wondering, why there is no change in temerpature in the solid with the cMRF.
I attached a screenshot of paraview. The left half is the case using the cMRF and the right one ist the case using the cMRSF. Everything else is identical. (except for the fxSolution-files of course)
Where is my problem?
I also attached both of the cases. It is working with OF 2.4. Just run the ./solve
Thanks for your help guys!

flanel1988 · May 31, 2016, 08:54

Can at least anyone tell my, where is the difference between the two solvers

? Maybe understandable for a newbie

flanel1988 · June 1, 2016, 09:17

Ok..problem solved... always check the geometrie... it was a 34m long tube instead of an 34mm short duct...

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May 31, 2016, 08:54		#2
flanel1988 New Member flanel Join Date: Apr 2016 Posts: 8 Rep Power: 10	Can at least anyone tell my, where is the difference between the two solvers ? Maybe understandable for a newbie

June 1, 2016, 09:17		#3
flanel1988 New Member flanel Join Date: Apr 2016 Posts: 8 Rep Power: 10	Ok..problem solved... always check the geometrie... it was a 34m long tube instead of an 34mm short duct...