[sabrinacarson]

Hello Foamers,

I have been having problem with running a simulation of flow boiling. The courant number has been shooting up very high (-250). I think there is some problem with the mesh because it is showning high max skewness. But, I want advice to know whether this mesh statistics suggest a good or bad mesh?

I have used refineMeshDict feature to refine at the same place twice. Can that be a problem?

Checking topology...
    Boundary definition OK.
    Cell to face addressing OK.
    Point usage OK.
    Upper triangular ordering OK.
    Face vertices OK.
    Number of regions: 1 (OK).

Checking patch topology for multiply connected surfaces...
                   Patch    Faces   Points                  Surface topology
            cylinderWall   183600   184275  ok (non-closed singly connected)
               outerWall     3400     3535  ok (non-closed singly connected)
                  bottom     9165     9667  ok (non-closed singly connected)
                     top     9165     9667  ok (non-closed singly connected)
                   side1     3700     3934  ok (non-closed singly connected)
                   side2     3700     3934  ok (non-closed singly connected)

Checking geometry...
    Overall domain bounding box (-0.0124875 0.00433 -5.764448e-26) (0.0124875 0.024975 0.5)
    Mesh has 3 geometric (non-empty/wedge) directions (1 1 1)
    Mesh has 3 solution (non-empty) directions (1 1 1)
    Boundary openness (-2.316414e-15 -1.386644e-14 -4.473254e-18) OK.
    Max cell openness = 2.989384e-16 OK.
    Max aspect ratio = 51.0618 OK.
    Minimum face area = 2.068277e-09. Maximum face area = 3.846066e-06.  Face area magnitudes OK.
    Min volume = 2.585525e-12. Max volume = 1.009628e-09.  Total volume = 0.0001174849.  Cell volumes OK.
    Mesh non-orthogonality Max: 85.92242 average: 20.13237
   *Number of severely non-orthogonal (> 70 degrees) faces: 270400.
    Non-orthogonality check OK.
  <<Writing 270400 non-orthogonal faces to set nonOrthoFaces
    Face pyramids OK.
    Max skewness = 1.384887 OK.
    Coupled point location match (average 2.870544e-07) OK.

Mesh OK.

End