FEMLISP Homepage

FEMLISP - a Common Lisp Framework for Finite Element Methods

Short description:

FEMLISP is a Common Lisp framework for solving partial differential equations with the help of the finite element method (FEM).

Functionality:

Interactive environment
Unstructured meshes in arbitrary space dimensions
Arbitrary products of simplices
Local and anisotropic mesh refinement
Coupled problems on different-dimensional domain parts
General variational formulation of PDE systems
Triangulation of 2D domains (interface to Triangle) and 3D domains (interface to Tetgen)
Lagrange finite elements of arbitrary order
Isoparametric and non-parametric cell mappings
Error estimators and adaptive mesh refinement strategies
Interfaces to direct solvers (SuperLU and UMFPACK)
Geometric and algebraic multigrid methods
Special PDEs (convection-diffusion-reaction, elasticity, Navier-Stokes)
Nonlinear problems
Eigenvalue problems
Time-dependent problems
Integrated graphics (interfaces to OpenDX and Gnuplot)
Parallelization support (POSIX threads and MPI)
Integrated documentation, demonstrations, tutorials, and tests
Very liberal license (modified BSD)

Sample applications:

Status:

The current version of FEMLISP is 2-2-0. It has been tested and verified to work with SBCL on Linux. Previous versions have also been tested and verified to work with other CL implementations (CMUCL, Clozure CL, Allegro CL, Lispworks, and Scieneer CL) on other operating systems (Mac OS X, Windows).

For more information, look at the User Manual.

Installation and download:

The project is hosted at the FSF's server Savannah. Follow the installation instructions in the User Manual.

Support

There is a mailing list where you can get help as well as announcements about new Femlisp developments.

Nicolas Neuss, 2018-09-06