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NISTIR 5948
MGGHAT User's Guide Version 1.1
William F. Mitchell
U. S. Department of Commerce
Technology Administration
National Institute of Standards and Technology
Information Technology Laboratory
Gaithersburg, MD 20899 USA
January 1997
MGGHAT User's Guide Version 1.1
William F. Mitchell
Applied and Computational Mathematics Division
National Institute of Standards and Technology
Gaithersburg, MD 20899 USA
Abstract:
MGGHAT (MultiGrid Galerkin Hierarchical Adaptive Triangles) is a
FORTRAN program for the solution of general second order linear
self-adjoint elliptic partial differential equations with
Dirichlet, natural or mixed boundary conditions on 2D polygonal
domains (possibly with holes).
MGGHAT uses a finite element method with linear, quadratic or
cubic elements (user selectable) over triangles. The adaptive
refinement via newest vertex bisection and the multigrid iteration
are both based on a hierarchical basis formulation. Run time and
a posteriori graphical displays are made with gnuplot.
This document is a user's guide for MGGHAT . It explains how to
obtain, install and use the software.
william.mitchell@nist.gov