Skip to content
Snippets Groups Projects
Commit 49a83242 authored by Christophe Geuzaine's avatar Christophe Geuzaine
Browse files

solver

parent 875f015b
Branches
Tags
No related merge requests found
Hide whitespace changes
Inline Side-by-side
Showing
with 58 additions and 29 deletions
doc/gmsh.html
+ 58
− 29
View file @ 49a83242
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
"http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
......@@ -5,8 +7,8 @@
<TITLE>Gmsh: a three-dimensional finite element mesh generator with
built-in pre- and post-processing facilities</TITLE>
<meta name="keywords" content="free mesh generator, free finite element software,
mesh generation, mesh refinement, free, delaunay triangulation,
<meta name="keywords" content="free mesh generator, free finite element
software, mesh generation, mesh refinement, free, delaunay triangulation,
automatic, maillages automatiques, mailleur, modelisation, opengl,
maillages 3D, 3D meshes, 3-D meshes, maillages 3-D, voronoi,
adaptation de maillages, mesh adaptation, modeling">
......@@ -39,23 +41,38 @@ lines, surfaces and volumes. These adapted meshes can be mixed with
simple structured (transfinite, elliptic, etc.) meshes in order to
augment the flexibility.
<h3>Geometrical Entity Definition</h3>
Parameterized geometries are created by successively defining points,
oriented curves (segments, circles, ellipsis, splines, etc.), oriented
surfaces (plane surfaces, ruled surfaces, etc.) and volumes. Compound
groups of geometrical entities can be defined, based on these
elementary parameterized geometric entities. Data can be defined
either interactively thanks to the menu system, or directly in the ASCII
input files.
<h3>Mesh Generation</h3>
Gmsh is structured around four modules: <a
href="#geometry">geometry</a>, <a href="#mesh">mesh</a>, <a
href="#solver">solver</a> and <a
href="#post-processing">post-processing</a>. The specification of any
input to these modules is done either interactively, or in text data
files (interactive specifications generate language bits in the input
file, and vice versa). The accessibility of most features in the ASCII
text file makes it possible to automate all treatments (loops, tests
and external access methods permit advanced scripting capabilities). A
brief description of the four modules is given hereafter.
<a name="geometry">
<h3>Geometry: geometrical entity definition</h3>
Geometries are created in a bottom-up flow by successively defining
points, oriented curves (segments, circles, ellipses, splines, etc.),
oriented surfaces (plane surfaces, ruled surfaces, etc.) and
volumes. Compound groups of geometrical entities can be defined, based
on these elementary parametrized geometric entities. Data can be
defined either interactively thanks to the menu system, or directly in
the ASCII input files. The scripting possibilities (with loops,
tests, arrays of variables, etc.) allow fully parametrized definitions
of all geometrical entities.
<a name="mesh">
<h3>Mesh: finite element mesh generation</h3>
A finite element mesh is a tessellation of a given subset of
R<sup>3</sup> by elementary geometrical elements of various shapes (in
this case lines, triangles, quadrangles, tetrahedra, prisms and
hexahedra), arranged in such a way that two of them intersect, if they
do, along a common face, edge or node, and never otherwise. All the
hexahedra), arranged in such a way that if two of them intersect, they
do so along a face, an edge or a node, and never otherwise. All the
finite element meshes produced by Gmsh as unstructured, even if they
were generated in a structured way. This implies that the elementary
geometrical elements are defined only by an ordered list of their
......@@ -99,18 +116,30 @@ characteristic length field evaluated at the center of its
circumscribed circle/sphere.
</ol>
<a name="solver">
<h3>Solver: external solver interface</h3>
External solvers can be interfaced with Gmsh through a socket
mechanism, which permits to easily launch computations either locally
or on remote computers, and to collect and exploit the simulation
results within Gmsh. The only solver currently interfaced is <A
HREF="/getdp/">GetDP</A>.
<h3>Scalar and Vector Field Visualization</h3>
<a name="post-processing">
<h3>Post-processing: scalar and vector field visualization</h3>
Multiple post-processing scalar or vector maps can be loaded and
manipulated (globally or individually) along with the geometry and the
mesh. Scalar fields are represented by iso-value curves or color maps
and vector fields by three-dimensional arrows or displacement
maps. Post-processor functions include offsets, elevation, interactive
color map modification, range clamping, interactive and scriptable
animation, vector postscript output, etc. All post-processing options
can be accessed either interactively or through the the input ascii
files.
mesh. Scalar fields are represented by iso-value curves/surfaces or
color maps and vector fields by three-dimensional arrows or
displacement maps. Post-processing functions include arbitrary section
computation, offset, elevation, boundary extraction, color map and
range modification, animation, <a href="/gl2ps/">vector graphic
output</a>, etc. All post-processing options can be accessed either
interactively or through the input ASCII text files. Scripting permits
to automate all the post-processing operations (e.g. for the creation
of complex animations).
<h2>Documentation</h2>
......@@ -192,7 +221,7 @@ Polytechnic Institute</a>) and <A
HREF="mailto:Christophe.Geuzaine@ulg.ac.be">Christophe Geuzaine</A>
(currently with the <a href="http://www.ulg.ac.be">University of
Liège</a>). Please use <A
HREF="mailto:gmsh@geuz.org">gmsh@geuz.org</A> instead of our personnal
HREF="mailto:gmsh@geuz.org">gmsh@geuz.org</A> instead of our personal
e-mails to send questions or bug reports!
......@@ -232,17 +261,17 @@ Some pictures made with Gmsh:
<h2>Links</h2>
Check out <A HREF="/getdp/">GetDP</A>, a scientific
computation software for the numerical solution of
integro-differential equations, using finite element and integral type
methods.
Check out <A HREF="/getdp/">GetDP</A>, a scientific computation
software for the numerical solution of integro-differential equations,
using finite element and integral type methods.
<p>
Back to <a href="/">geuz.org</a>.
<p>
$Date: 2001-10-12 19:56:52 $
$Date: 2001-10-13 07:20:35 $
</BODY>
</HTML>
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Please register or to comment