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IDProjectCategoryView StatusDate SubmittedLast Update
0000409OpenFOAMBugpublic2012-02-02 11:412013-05-29 10:23
Reporterlinnemann Assigned Touser2 
PrioritynormalSeveritymajorReproducibilityalways
Status resolvedResolutionno change required 
PlatformLinuxOSCentOSOS Version5.4
Summary0000409: MRF solvers give wrong results when MRF zones is larger than the rotating walls
DescriptionUsing MRFSimpleFoam on a simple cases gives very different results depending on the size of the cellZone used.

If the cellZone just spans the walls that traverse through the cells then results are good.

Making the cellZone slightly bigger results in distorted velocity field.
Steps To ReproduceMake the cellZone in the attached case from radius 0.05m to 0.07m and rerun.
TagsNo tags attached.

Activities

linnemann

2012-02-02 11:41

reporter  

TestCase_MRF_Error.tar.gz (623,861 bytes)

linnemann

2012-02-02 11:42

reporter  

AMI_MRF.png (121,149 bytes)   
AMI_MRF.png (121,149 bytes)   

user540

2012-11-07 14:17

  ~0001767

The convergence doesn´t seem to be reached.
2000 iterations (the number you set in your cases) are not enough.
Try with 25000.
Regards

user2

2013-05-29 10:23

  ~0002250

AMI patches should be added to the nonRotatingPatches in the MRFZones dictionary

Issue History

Date Modified Username Field Change
2012-02-02 11:41 linnemann New Issue
2012-02-02 11:41 linnemann File Added: TestCase_MRF_Error.tar.gz
2012-02-02 11:42 linnemann File Added: AMI_MRF.png
2012-11-07 14:17 user540 Note Added: 0001767
2013-05-29 10:23 user2 Note Added: 0002250
2013-05-29 10:23 user2 Status new => resolved
2013-05-29 10:23 user2 Fixed in Version => 2.1.x
2013-05-29 10:23 user2 Resolution open => no change required
2013-05-29 10:23 user2 Assigned To => user2