Refinement Algorithms for Unstructured Quadrilateral or Brick Element Meshes
Schneiders, Robert, and Jurgen Debye
Modeling, Mesh Generation and adaptive Numerical Methods for Partial Differential Equations; Proceedings IMA
We consider the problem of refining unstructured quadrilateral or brick element meshes. We present an algorithm which is a generalization of an algorithm developed by Cheng et. al. for structured quadrilateral element meshes. The problem is solved for the two-dimensional case. For three dimensions we present a solution for some special cases and a general solution which introduces tetrahedral and pyramidal transition elements.
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