CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Error on chtMultiRegionFoam compared to the chtMultiRegionSimpleFoam

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 30, 2016, 05:18
Default Error on chtMultiRegionFoam compared to the chtMultiRegionSimpleFoam
  #1
New Member
 
flanel
Join Date: Apr 2016
Posts: 8
Rep Power: 10
flanel1988 is on a distinguished road
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!
Attached Images
File Type: jpg Problem.jpg (67.0 KB, 22 views)
Attached Files
File Type: gz try2Roehre_chtMultiRegionFoam.tar.gz (69.7 KB, 5 views)
File Type: gz try2Roehre_chtMultiRegionSimpleFoam.tar.gz (69.6 KB, 8 views)
flanel1988 is offline   Reply With Quote

Old   May 31, 2016, 07:54
Default
  #2
New Member
 
flanel
Join Date: Apr 2016
Posts: 8
Rep Power: 10
flanel1988 is on a distinguished road
Can at least anyone tell my, where is the difference between the two solvers ? Maybe understandable for a newbie
flanel1988 is offline   Reply With Quote

Old   June 1, 2016, 08:17
Default
  #3
New Member
 
flanel
Join Date: Apr 2016
Posts: 8
Rep Power: 10
flanel1988 is on a distinguished road
Ok..problem solved... always check the geometrie... it was a 34m long tube instead of an 34mm short duct...
flanel1988 is offline   Reply With Quote

Reply

Tags
chtmultiregionfoam, chtmultiregionsimpefoam, heat flux, temperature

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Error in thermophysical properties (chtMultiRegionFoam) mukut OpenFOAM Pre-Processing 28 November 23, 2021 06:34
Error in chtMultiRegionFoam michael157 OpenFOAM Running, Solving & CFD 17 May 22, 2017 03:32
[snappyHexMesh] snappyHexMesh and cyclic boundaries Ruli OpenFOAM Meshing & Mesh Conversion 2 December 9, 2013 06:51
Embed explicitSetValue in chtMultiRegionFoam samiam1000 OpenFOAM 2 April 18, 2012 05:14
Multiregion Heat Transfer + natural convection (water) with chtMultiRegionFoam fattychickenrun OpenFOAM 5 October 31, 2011 16:53


All times are GMT -4. The time now is 07:17.