[ImmersedBoundary] potentialIbFoam: 'Error: Floating Point Exception'

ordinary · December 13, 2016, 07:31

Hello,

My case is 2D, flow over cylinder with immersed boundary method. However when I type 'potentialIbFoam', I get this:

Code:

    From function void immersedBoundaryFvPatch::makeIbSamplingWeights()
    in file immersedBoundaryFvPatch/immersedBoundaryFvPatchSamplingWeights.C at line 151
    Insufficient live neighbourhood for IB cell 267621.
Please adjust radiusFactor, angleFactor or immersedBoundaryMaxCellCellRows in immersedBoundaryFvPatch.

    From function void immersedBoundaryFvPatch::makeIbSamplingWeights()
    in file immersedBoundaryFvPatch/immersedBoundaryFvPatchSamplingWeights.C at line 151
    Insufficient live neighbourhood for IB cell 267655.
Please adjust radiusFactor, angleFactor or immersedBoundaryMaxCellCellRows in immersedBoundaryFvPatch.

    From function void immersedBoundaryFvPatch::makeIbSamplingWeights()
    in file immersedBoundaryFvPatch/immersedBoundaryFvPatchSamplingWeights.C at line 151
    Insufficient live neighbourhood for IB cell 267718.
Please adjust radiusFactor, angleFactor or immersedBoundaryMaxCellCellRows in immersedBoundaryFvPatch.

    From function void immersedBoundaryFvPatch::makeIbSamplingWeights()
    in file immersedBoundaryFvPatch/immersedBoundaryFvPatchSamplingWeights.C at line 151
    Insufficient live neighbourhood for IB cell 267719.
Please adjust radiusFactor, angleFactor or immersedBoundaryMaxCellCellRows in immersedBoundaryFvPatch.

    From function void immersedBoundaryFvPatch::makeIbSamplingWeights()
    in file immersedBoundaryFvPatch/immersedBoundaryFvPatchSamplingWeights.C at line 151
    Insufficient live neighbourhood for IB cell 267720.
Please adjust radiusFactor, angleFactor or immersedBoundaryMaxCellCellRows in immersedBoundaryFvPatch.

    From function void immersedBoundaryFvPatch::makeIbSamplingWeights()
    in file immersedBoundaryFvPatch/immersedBoundaryFvPatchSamplingWeights.C at line 151
    Insufficient live neighbourhood for IB cell 267722.
Please adjust radiusFactor, angleFactor or immersedBoundaryMaxCellCellRows in immersedBoundaryFvPatch.

It goes on and on. At the end of the output, it says :

'Floating point exception'

As I said, my cylinder is created by blockMesh and it is in .STL file type. My main (base) mesh is created by snappyHexMesh.

I paid attention that Delta S (cell size on the surface) equals the cell size of the main mesh.

What is my fault ?

arnavajmani · June 21, 2017, 14:07

Hello everyone

,

i am facing the same error which says:

Please adjust radiusFactor, angleFactor or immersedBoundaryMaxCellCellRows in immersedBoundaryFvPatch.

what is the reason for the error

, how could we overcome it? Please help

June 21, 2017, 14:07		#2
arnavajmani New Member Arnav Join Date: Oct 2015 Posts: 1 Rep Power: 0	Hello everyone, i am facing the same error which says: Please adjust radiusFactor, angleFactor or immersedBoundaryMaxCellCellRows in immersedBoundaryFvPatch. what is the reason for the error, how could we overcome it? Please help

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