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Elmer is an open source multiphysical simulation software developed by CSC. Elmer development was started 1995 in collaboration with Finnish Universities, research institutes and industry.

Elmer includes physical models of fluid dynamics, structural mechanics, electromagnetics, heat transfer and acoustics, for example. These are described by partial differential equations which Elmer solves by the Finite Element Method (FEM).

Elmer has a modern programmable graphical user and preprocessing interface. It provides a large selection of modern numerical methods (see below)

 Elmer 5.4.0

Free to download



CSC, the Finnish IT center for science


System Requirements

DocumentationSourceForge Project Page

Selected Reviews:

Features include:

  • The Elmer package contains solvers for a variety of mathematical models
    • Heat transfer: models for conduction, radiation and phase change
    • Fluid flow: the Navier-Stokes, Stokes and Reynolds equations, k-ε model
    • Species transport: generic convection-diffusion equation
    • Elasticity: general elasticity equations, dimensionally reduced models for plates and shells
    • Acoustics: the Helmholtz equation
    • Electromagnetism: electrostatics, magnetostatics, induction
    • Microfluidics: slip conditions, the Poisson-Boltzmann equation
    • Levelset method: Eulerian free boundary problems
    • Quantum Mechanics: density functional theory (Kohn-Sham)
  • Numerical methods:
    • All basic element shapes in 1D, 2D and 3D with the Lagrange shape functions of degree k ≤ 2
    • Higher degree approximation using p-elements
    • Time integration schemes for the first and second order equations
    • Solution methods for eigenvalue problems
    • Direct linear system solvers (Lapack & Umfpack)
    • Iterative Krylov subspace solvers for linear systems
    • Multigrid solvers (GMG and AMG) for some basic equations
    • ILU preconditioning of linear systems
    • Parallelization of iterative methods
    • The discontinuous Galerkin method
    • Stabilized finite element formulations, including the methods of residual free bubbles and SUPG
    • Adaptivity, particularly in 2D
    • BEM solvers (without multipole acceleration)
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