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Missing cells in surface sampling output

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Old   October 18, 2021, 08:19
Question Missing cells in surface sampling output
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Jeffrey Johnston
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Hello!

I defined a surface sample in my controlDict and saved the output in VTK format. When looking at one of the outputs in paraview, I found that one of the surfaces has cells missing. The other surfaces I sampled did not have this problem. The difference (as far as I can tell) with this surface is that it aligns perfectly with the cell faces (I'm using a uniform hexahedral mesh).

Any ideas why this might be? Could this be because of my interpolation scheme?



I'm using OF 2.4.x

Here is my sampling sub-dictionary:

Code:
      sliceDataInstantaneous
      {
          type                 surfaces;
          functionObjectLibs   ("libsampling.so");

          enabled              true;

          outputControl        adjustableTime;
          //outputInterval	 1; //when using timeStep
          writeInterval        100; //when using asjustableTime

          //timeStart            18000;
          //timeEnd              20000;

          surfaceFormat        vtk;

          interpolationScheme   cellPoint;

          fields
          (
              U
              ...
          );

          surfaces
          (
              ...
              slice_hub_centre
              {
                  type         plane;
                  basePoint    (1500 1500 90);
                  normalVector (0 0 1);
                  triangulate  false;
              }
              ...
          );
      }
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