89b9e2d24c
This set now produces a contiguous face zone even when cell centres fall exactly on the plane of the searchable surface. The set now calculates the intersections between the cell-centre-to-cell-centre vectors for every face, and uses those to to categorise the adjacent cells either side of the set as either above or below the surface. Then, faces which border both an above and a below cell are included. This guarantees a contiguous result. Previously faces for which an intersection was found were included directly, which resulted in a non-contiguous result when the intersections became ambiguous; i.e., when the surface passed very close to the cell centres.
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About OpenFOAM
OpenFOAM is a free, open source computational fluid dynamics (CFD) software package released by the OpenFOAM Foundation. It has a large user base across most areas of engineering and science, from both commercial and academic organisations. OpenFOAM has an extensive range of features to solve anything from complex fluid flows involving chemical reactions, turbulence and heat transfer, to solid dynamics and electromagnetics.
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