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IDProjectCategoryView StatusDate SubmittedLast Update
0000554OpenFOAMBugpublic2012-06-12 15:282018-07-10 11:16
Reporteruser449Assigned Tohenry  
PrioritynormalSeveritymajorReproducibilityalways
Status closedResolutionfixed 
Platformtested aswell with othersOSUbuntuOS Version10.04
Summary0000554: interFoam outlet boundary reflects phase if situated in positive coordinate quadrant
DescriptionAll different kinds of outlet boundary conditions result in a reflection of the first phase at the outlet if the outlet is situated at a place with positive coordinates. Does not appear if situated at vertices with negative coordinates.
See http://www.cfd-online.com/Forums/openfoam-solving/97127-different-solutions-comparing-pisofoam-interfoam.html#post363022 for a wider discusiion and case files
Steps To Reproducedownload case folder from http://www.cfd-online.com/Forums/openfoam-solving/97127-different-solutions-comparing-pisofoam-interfoam.html#post363022
Additional InformationReproduced by others on other systems.
TagsinterFoam, outlet

Activities

user449

2012-06-12 15:34

 

impactOnOutflowT0,15.jpg (13,487 bytes)   
impactOnOutflowT0,15.jpg (13,487 bytes)   

user449

2012-06-12 15:35

 

impactOnOutflowT0,15_withXCoordsmallerZero.jpg (14,915 bytes)   
impactOnOutflowT0,15_withXCoordsmallerZero.jpg (14,915 bytes)   

user449

2012-06-12 15:38

  ~0001389

The two pictures show the simulation at the same timestep and only differ in grid location, the one without phase reflection has its grid located with negative x-coordinates!

henry

2012-06-12 16:29

manager   ~0001390

I guess you are using a fixed p_rgh condition at the outlet, you may find that using zeroGradient is more physical. If this is not satisfactory you will need to develop an approapriate transmissive condition for you outlet with careful handling of the p_rgh field.

Issue History

Date Modified Username Field Change
2012-06-12 15:28 user449 New Issue
2012-06-12 15:34 user449 File Added: impactOnOutflowT0,15.jpg
2012-06-12 15:35 user449 File Added: impactOnOutflowT0,15_withXCoordsmallerZero.jpg
2012-06-12 15:38 user449 Note Added: 0001389
2012-06-12 15:39 user449 Tag Attached: interFoam
2012-06-12 15:39 user449 Tag Attached: alpha1 reflection
2012-06-12 15:39 user449 Tag Attached: outlet
2012-06-12 16:29 henry Note Added: 0001390
2012-06-12 16:29 henry Status new => closed
2012-06-12 16:29 henry Assigned To => henry
2012-06-12 16:29 henry Resolution open => fixed
2018-07-10 11:16 administrator Tag Detached: alpha1 reflection