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ff3d - FreeFEM3D is a general PDE solver


ff3d [-v|-h|-H]
ff3d [-nw][-V verbosity_level][filename]


This manual page documents, briefly, the ff3d command.

FreeFEM3D (aka ff3d) is a 3D solver of partial differential equations (PDE). It is a
member of the familly of the freefem programs (see http://www.freefem.org).

ff3d, as well as its cousins, is a PDE solver driven by a user-friendly language. It
solves many kind of problems such as elasticity, fluids (Stokes and Navier-Stokes) and a
lot more. The user has to enter the equation associated with the problem, giving either
the PDE in strong formulation or weak (variational) formulation.

ff3d can use either the Finite Elements method (the mesh of the geometry being provided by
the user) or a Fictitious Domain like approach where the geometry is described using
Constructive Solid Geometry (CSG). This description is done using the POV-Ray language but
others such as VRML could be added.

The processing of the results is left to the user. One can use various graphic tools:
output in the MEdit mesh format or VTK are supported. The implementation of a VTK base
visualization module is underway.

The goal of ff3d is to provide a good teaching tool and a research toolbox (the code is
written in C++ and its design is such that new methods can be easily implemented).


-v, --version
Output version of program and exit. The default mode is `v', a simple version.
The `c' mode will print copyright information and `n' will print the full copyright

-h, --help
Display usage information and exit.

-H, --more-help
Display extended usage information and Licence and exit.

-V verbosity_level, --verbosity verbosity_level
Set level of verbosity. The default number for this option is:

Changes ff3d level of verbosity. Bigger values will make ff3d give more and more


Jean-Baptiste Apoung Kamga
Stephane Del Pino
Olivier Pironneau
Driss Yakoubi


Cecile Dobrzynski
Pascal Have
Christophe Prud'homme


Please send bug reports to:
[email protected] or [email protected]
or better use the Bug Tracking System:


This program is free software; you can redistribute it and/or modify it under the terms of
the GNU General Public License as published by the Free Software Foundation; either
version 2, or (at your option) any later version.
see http://www.gnu.org/licenses/gpl.html for details.

2007-07-05 FF3D(1)

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