FreeFEM Documentation A language for the finite element method

Olivier Pironneau
pironneau@ann.jussieu.fr
Laboratoire d'analyse numérique
Université Pierre et Marie Curie
Tour 55-65
75005 Paris

Christophe Prud'homme
Christophe.Prudhomme@asci.fr
Laboratoire d'analyse numérique
Université Pierre et Marie Curie
Tour 55-65
75005 Paris

Copyright ©1994, 1995, 1996 Numerica

All trademarks referenced herein are trademarks of their respective holders.

• Freefem is free. It may not be sold or distributed as part of a package which is sold. It may not be used in part or in totality within a commercial software without the authors' agreement.
• MacGfem, PCGfem, XGfem are protected by the law on copyrights for softwares. They are distributed by Numerica company.
• Warning: Gfem is a language to help you solve Partial Differential Equations in 2 dimensions; it assumes a basic knowledge and understanding of the Finite Element Method and of the Operating System used. It is also necessary to read carefully this documentation to understand the possibilities and limitations of this product. Numerica is not responsible for any errors or damage due to wrong results.

Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice are preserved on all copies.

 
• Introduction
  • Conventions
  • Software and Documentation
    • AUTHORS
  • The FreeFEM World
• Installation
  • Windows
  • Macintosh
  • X Windows
    • Configure script
      • Mesh adaptation library
      • FreeFEM and Gfem
      • Optimization
    • Without the configure script
• The Gory Details
  • Programs
  • List of reserved words
  • Building a mesh
    • Triangulations
    • Border(), buildmesh(), polygon()
      • buildmesh and domain decomposition
    • Geometric variables, inner and region bdy, normal
    • Regions
  • Functions
    • Functions and scalars
    • Building functions
    • Value of a function at one point
    • Special functions:dx(), dy(), convect()
  • Global operators
  • Integrals
  • Solving an equation
    • Onbdy()
    • Pde()
    • Solve()
    • 2-Systems
    • Boundary conditions at corners
    • Weak formulation
  • Results
    • plot, savemesh, save, load, loadmesh
      • Remark:
      • Remark:
      • Remark:
    • Saveall()
  • Other features
    • Iter
    • Complex numbers
    • Scal()
    • Wait, nowait, changewait
    • One Dimensional Plots
    • Precise
    • Exec(), user(), how to link an external function to Gfem
  • Language internals
• Mesh adaptation
  • One example
    • Example
    • What does it do?
  • The options
    • Anisotropy?
    • Interpolation
    • Advanced parameters
• Examples
  • Triangulations examples
  • Scalar examples
  • Complex number example
  • 2-system example
• References
• Index
• Contents
• About this document ...