[musahossein]

Dear all:
I am running sloshingTank2D in interDymFoam. My question is about the pRefPoint in fvSolutions directory. Does the point have to be located in one of the phases. For example if I am using water / air phase, then does pRefPoint have to be in the water? There are times when OpenFoam will say that the pRefPoint cannot be found, even though I know it is within the tank. How can I deal with this?

Thanks

[musahossein]

Dear all:

I have a small tank in OpenFOA/interDyMFoam/SolshingTank2d. The Tank dimensions are length =1.9m, depth is 1.27m, thickness is 0.1m. Water depth is 0.27m. I am applying a sinusoidal wave varying between -+0.94m. The solutions runs ok for the first few iterations and then I get the following message:

[1] 
[1] --> FOAM FATAL IO ERROR: 
[1] Unable to set reference cell for field p
    Reference point pRefPoint (0 0 0) found on 0 domains (should be one)
[1] 
[1] 
[1] file: IOstream.PIMPLE from line 0 to line 0.
[1] 
[1]     From function void Foam::setRefCell
(
    const volScalarField&,
    const volScalarField&,
    const dictionary&,
    label& scalar&,
    bool
)
[1]     in file cfdTools/general/findRefCell/findRefCell.C at line 105.
[1] 
FOAM parallel run exiting
[1]

My coordinate system is set so that it is set on the water/air interface and is located midway along the length of the tank. I am using a mesh of 120 cells in the horizontal and 300 in the vertical direction. I have set pRefPoint at 0,0,0. So dont know why I get this error. I have tried it at other locations well, and that does not seem to help.

Any advice will be greatly appreciated.

[musahossein]

I have a question about prePoint in sloshingTank2d/system/fvsolutions. I am running a 2d tank problem L=1,8m, water depth is 0.6m; tank thickness is 0.5m. Mesh is 100x300. After the first few iterations, I get the following error:

1] file: IOstream.PIMPLE from line [2] 
 [2] 
 [2] --> FOAM FATAL IO ERROR: 
 [2] Unable to set reference cell for field p
     Reference point pRefPoint (0 0 0) found on 0 domains (should be one)
 [2] 
 [2] 
 [2] file: IOstream.PIMPLE from line 0 to line 0.[3] 
 [3] 
 [3] --> FOAM FATAL IO ERROR: 
 [3] Unable to set reference cell for field p
     Reference point pRefPoint (0 0 0) found on 0 domains (should be one)
 [3] 
 [3] 
 [3] file: IOstream.PIMPLE from line 0 to line 0.
 [3] 
 [3]     From function [5] 
 [5] 
 [5] --> FOAM FATAL IO ERROR: 
 [5] Unable to set reference cell for field p
     Reference point pRefPoint (0 0 0) found on 0 domains (should be one)
 [5] 
 [5] 
 [5] file: IOstream.PIMPLE from line 0 to line 0.
 [5] 
 [5]     From function void Foam::setRefCell
 (
     const volScalarField&,
     const volScalarField&,
     const dictionary&,
     label& scalar&,
     bool

but point 0,0,0 is in the analysis space (i.e in the tank). So why am I getting this error. Is there a workaround this, so I dont see this error i.e.any fool proof way to put the point such that OpenFOAM finds it each time?
Thanks in advance.

[wyldckat]

Hi Musaddeque,

I need a test case in order to test this. But if I'm not mistaken, this bug has already been fixed in OpenFOAM 2.3.
If you cannot provide a test case, please test with the latest OpenFOAM 2.3.1.

Best regards,
Bruno

PS: For future reference, this thread is somewhat related to these two:

• http://www.cfd-online.com/Forums/ope...ct-number.html
• http://www.cfd-online.com/Forums/ope...roldict-2.html

[musahossein]

WyldKat:

Thanks for your response. I have found that when the numerical solution being performed by OpenFOAM starts to grow out of bounds, the prefpoint error is one of the errors I get. So I think, the preferror is an indirect effect due to other errors that are occuring at runtime. I checked this by plotting an out put as openfoam is running, say the force from a 2d tank. The plot shows that when the force suddenly increases, OpenFoam shuts down and issues this error and shuts down the parallel process. I will try to replicate this process for your review in the near future.

Thankyou again for taking the time to respond.

Musa