PDNMESH(1) PdnMesh Manual PDNMESH(1) NAME pdnmesh - A 2D finite element mesh generator and solver SYNOPSIS pdnmesh [options] [-i input file] DESCRIPTION pdnmesh is a 2D finite element problem solver. It generates the Delaunay triangulation of an input point set and afterwards, it will solve the prob- lem. Apart from the points, the set of edges and the boundaries should be specified in the input file. This is a beta release. Most of the options can now be changed using the GUI. So do not expect the command line options to work properly. Please re- port bugs to pdnmesh-bugs@lists.sourceforge.net. OUTPUT The program can generate Encapsulated Postscript files of the mesh, con- tours of potential and gradient and ASCII files of the mesh. In text only mode, by default it will generate the mesh and contour files. If a display is available, the program can also display its results on the screen. It can display the equipotential contours as well as the gradient. OPTIONS pdnmesh accepts the following options: -h, -? Print help. -V Print the currently installed version of pdnmesh on the standard output. -s Uses the sparse matrix solver instead of the full matrix solver (for Poisson Equation only). -a VALUE Sets the minimum area of a triangle to be split to VALUE The area is taken with respect to local coordinates, NOT the input coordi- nates. The local coordinate system is enclosed in a 2 by 2 square centered at origin. -A VALUE Sets the maximum area of a triangle to be split to VALUE The area is taken with respect to local coordinates, NOT the input coordi- nates. The local coordinate system is enclosed in a 2 by 2 square centered at origin. -c VALUE Sets the number of contour lines drawn to VALUE an integer. -i FILE Reads the input file given by FILE which should be in the correct format given by pdnmesh_input(5). -d (contour|grad|fill) By default displays either the contour plot, gradient plot or colour fill. -e (poisson|helmholtz|helmin|helmk|helmbeta) Selects the solver to use. poisson : Poisson Equation. helmholtz : Homogeneous Helmholtz Equation. helmin : Inhomogeneous Helmholtz Equation (using edge elements). helmk : Find cutoff frequency given propagation constant. helmbeta : Find propagation constant given cutoff frequency. -v Print verbose output. -nx Do not open graphical display. This is used when the program is run in text mode. SEE ALSO pdnmesh_input(5) COPYRIGHT Copyright (C) 2001-2005 Sarod Yatawatta Permission to use, copy, modify, and distribute this software and its docu- mentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both copyright no- tice and this permission notice appear in supporting documentation. Version 0.2.2 2005 April PDNMESH(1)
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