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The current release of OFELI is not provided within a native mesh
generator. For this, we prefer to add to the package a public domain mesh generator that we have interfaced with
OFELI classes. The included mesh generator is called BAMG.
It was developed by an INRIA team.
To generate a 2-D finite element mesh you have to use the class Domain to create a domain and then
call the function BAMG that generates a mesh file in the XML format. The following example
contained in the OFELI package illustrates a typical usage of the mesh generator. It uses the program
g2m created while you install the utilities
An example
We now give an example of XML to generate a domain and then a mesh
<?xml version="1.0" encoding="ISO-8859-1" ?> <OFELI_File> <info> <title>Definition of a domain with a hole</title> <date>January 1, 2010</date> <author>R. Touzani</author> </info> <Domain dim="2"> <vertex> 0. 0. 2 0.1</vertex> <vertex> 1. 0. 2 0.1</vertex> <vertex> 1. 1. 2 0.1</vertex> <vertex> 0. 1. 2 0.1</vertex> <vertex> 0.4 0.4 1 0.01</vertex> <vertex> 0.6 0.4 1 0.01</vertex> <vertex> 0.6 0.6 1 0.01</vertex> <vertex> 0.4 0.6 1 0.01</vertex> <vertex> 0.1 0.2 1 0.01</vertex> <vertex> 0.2 0.2 1 0.01</vertex> <line> 1 2 2 0 </line> <line> 2 3 2 0 </line> <line> 3 4 2 0 </line> <line> 4 1 2 0 </line> <line> 5 6 1 0 </line> <line> 6 7 1 0 </line> <line> 7 8 1 0 </line> <line> 8 5 1 0 </line> <circle> 9 9 10 1 1</circle> <SubDomain> 1 1 10</SubDomain> </Domain> </OFELI_File> |
The above text file enables generating a rectangular domain containing a circular hole.
Once this file is created and called test.dom, we can generate the file test.m
by typing
g2m -d test.dom
g2m --help
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