Finite Element Method - 3D Mesh Generator - Metfem3D
Mesh quality enhancement. Elements transformation.
Delaunay reconfiguration routine.
To improve mesh quality the following transformations are applied1:
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Three elements common to an edge are transformed to two elements, if one of the elements fails to fulfill the quality criterion (see figure below).
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Four elements common to an edge are transformed to a new configuration of four elements common to an edge when one of the elements does not meet the quality criterion. The new pattern is chosen from two topologically different possibilities1 (see figure below).
Additionally, too small boundary elements could be destructed by shifting all its nodes to the point located at the center of the outer patch of the element.
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