On interpolation error on degenerating prismatic elements
Ali Khademi, Sergey Korotov, Jon Eivind Vatne (2018)
Applications of Mathematics
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We propose an analogue of the maximum angle condition (commonly used in finite element analysis for triangular and tetrahedral meshes) for the case of prismatic elements. Under this condition, prisms in the meshes may degenerate in certain ways, violating the so-called inscribed ball condition presented by P. G. Ciarlet (1978), but the interpolation error remains of the order in the -norm for sufficiently smooth functions.