IFISS Software Package

Incompressible Flow & Iterative Solver Software Version 2.2
Released 26 May 2006

This is an open-source MATLAB software package associated with the book
Finite Elements and Fast Iterative Solvers with applications in incompressible fluid dynamics
by Howard C. Elman, David J. Silvester, and Andrew J. Wathen, published by Oxford University Press.
See the publisher's web pages (UK Edition) / (US Edition) for additional information about the book.

The IFISS software can be used to generate typical linear systems arising from finite element discretizations of four important PDE applications: diffusion, convection-diffusion, Stokes flow and Navier-Stokes flow problems. It has built-in multigrid and Krylov subspace solvers and includes a variety of appropriate preconditioning strategies for each problem. We have used early versions of the software to support technical workshops we have given in the last decade on fast solvers for incompressible flow problems.

Key features include
• implementation of a variety of mixed finite element approximation methods
• automatic calculation of stabilization parameters where appropriate
• a posteriori error estimation
• a range of preconditioned Krylov subspace solvers (including MINRES and BICGSTAB(ell))
• a built-in geometric multigrid solver/preconditioner
• an interface to the algebraic multigrid solver of FEMLAB (see http://www.comsol.com/ )
• useful visualization tools.

IFISS has been tested under Matlab Versions 5.3 to 7.1 and can be run under Windows, Unix and Mac architectures. Documentation is available at ifiss_guide.pdf.

License

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation ; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

Your use or distribution of IFISS or any derivative code implies that you agree to this License.

Copyright (c) 2005 by D. J. Silvester, H. C. Elman, A. Ramage.

Click here to accept the above license and download the code.

Authors

  
David Silvester                Howard Elman                     Alison Ramage
School of Mathematics          Department of Computer Science   Department of Mathematics
University of Manchester       University of Maryland           University of Strathclyde
Sackville Street               College Park, MD 20742           28 Richmond Street
Manchester M60 1QD             USA                              Glasgow G1 1XH
United Kingdom                 elman@cs.umd.edu                 United Kingdom
na.silvester@na-net.ornl.gov                                    a.ramage@strath.ac.uk

Acknowledgments

This software was developed with support from the US National Science Foundation, the US Department of Energy, and the UK Engineering and Physical Sciences Research Council.

Mirror Site

The software can also be obtained from http://www.cs.umd.edu/~elman/ifiss.html.