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IDProjectCategoryView StatusLast Update
0001324OpenFOAMBugpublic2016-04-20 21:17
Reporterkkk Assigned Tohenry  
PriorityhighSeveritymajorReproducibilityalways
Status closedResolutionno change required 
PlatformLinuxOSUbuntuOS Version10.04
Summary0001324: non-zero velocity can not be set to blockage wall of cyclicACMI
DescriptionI am trying to do tutorial of cyclicACMI with OF2.3.x oscillatingInletACMI2D.
I can not set non-zero velocity on ACMI2_blockage.
fixedValue (0 0 0) is default setting. I want to set fixedValue (10 0 0) on the ACMI2_blockage of U.
But it didn't work well. it became fixedValue (0 0 0) as time progresses.
Steps To ReproduceSet the following on ACMI2_blockage of U file

    ACMI2_blockage
    {
        type fixedValue;
        //value uniform (0 0 0);
        value uniform (10 0 0);
    }
TagsACMI

Activities

kkk

2014-06-11 08:15

reporter  

user763

2015-02-06 14:19

  ~0003710

Last edited: 2015-02-06 14:20

I'm having the exact same problem in a custom interDyMFoam run. The alpha.water BC on the blockage patches resets to

    ACMI2_blockage
    {
        type fixedValue;
        value uniform 0;
    }

even though I'm specifying

    ACMI2_blockage
    {
        type fixedValue;
        value uniform 1;
    }

I think this issue:

http://www.openfoam.org/mantisbt/view.php?id=1335

is also related, as I also get incorrect low values of alpha.water next to the blockage patch when using zeroGradient as BC. That's the reason why I tried using fixedValue as BC on the first place.

kkk

2016-03-22 03:13

reporter   ~0006054

Hi

I found the other way to set non-zero velocity on blockage wall of cyclicACMI.
timeVaryingUniformFixedValue has to be used instead of fixedValue.
Actually,timeVaryingUniformFixedValue seemed to become obsolete in OF2.3.x.
But you can use it of OF1.7.1.
I attached "oscillatingInletACMI2D" being set timeVaryingUniformFixedValue on ACMI2_blockage of U.
I am very happy if this could help someone.
Plese don't forget wmake libso timeVaryingUniformFixedValue before running.

Regards,
kkk

kkk

2016-03-22 03:13

reporter  

henry

2016-04-20 21:16

manager   ~0006147

timeVaryingUniformFixedValue has been superceded by the more general uniformFixedValue BC which support various ways to evaluate the "value" including various functions of time. This functionality has been further enhanced in OpenFOAM-dev.

Issue History

Date Modified Username Field Change
2014-06-11 08:15 kkk New Issue
2014-06-11 08:15 kkk File Added: oscillatingInletACMI2D_Test.tar.gz
2014-12-29 18:43 wyldckat Tag Attached: ACMI
2015-02-06 14:19 user763 Note Added: 0003710
2015-02-06 14:19 user763 Note Edited: 0003710
2015-02-06 14:20 user763 Note Edited: 0003710
2016-03-22 03:13 kkk Note Added: 0006054
2016-03-22 03:13 kkk File Added: oscillatingInletACMI2D_timeVaryingUniformFixedValue.zip
2016-04-20 21:16 henry Note Added: 0006147
2016-04-20 21:16 henry Status new => closed
2016-04-20 21:17 henry Assigned To => henry
2016-04-20 21:17 henry Resolution open => no change required