HP90: A general and flexible Fortran 90 hp-FE code |
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Authors: | L Demkowicz K Gerdes C Schwab A Bajer T Walsh |
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Affiliation: | (1) Seminar für Angewandte Mathematik, ETH Zürich, CH-8092 Zürich, Switzerland (e-mail: gerdes@sam.math.ethz.ch) , CH;(2) TICAM, The University of Texas at Austin, Austin, TX 78712, USA , US |
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Abstract: | A general 2D-hp-adaptive Finite Element (FE) implementation in Fortran 90 is described. The implementation is based on an abstract data structure,
which allows to incorporate the full hp-adaptivity of triangular and quadrilateral finite elements. The h-refinement strategies are based on h2-refinement of quadrilaterals and h4-refinement of triangles. For p-refinement we allow the approximation order to vary within any element. The mesh refinement algorithms are restricted to
1-irregular meshes. Anisotropic and geometric refinement of quadrilateral meshes is made possible by additionally allowing
double constrained nodes in rectangles. The capabilities of this hp-adaptive FE package are demonstrated on various test problems.
Received: 18 December 1997 / Accepted: 17 April 1998 |
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