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README.adoc

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Elmer FEM

This is the official source code repository for the Elmer FEM software suite.

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Elmer is a finite element software for numerical solution of partial differential equations. Elmer is capable of handling any number of equations and is therefore ideally suited for the simulation of multiphysical problems. It includes models, for example, of structural mechanics, fluid dynamics, heat transfer and electromagnetics. Users can also write their own equations that can be dynamically linked with the main program.

Elmer consists of several parts. The most important ones are ElmerSolver the finite element solver, ElmerGUI the graphical user interface, and ElmerGrid the mesh creation and manipulation tool. Also a visualization tool, ElmerPost, is included in the package but it is no longer developed.

Download binaries

You may download binaries and virtual machines from here.

Docker

Documentation

You may find the PDFs for the documentation here.

Compiling

macOS

  • Download this repository either az a zip file via GitHub or using git clone https://github.com/ElmerCSC/elmerfem.git

  • Go to the downloaded directory mkdir build and cd build

  • Install Homebrew

  • Install GCC brew install gcc

  • Install CMake brew install cmake

  • Without MPI:

    • cmake .. -D WITH_OpenMP:BOOLEAN=TRUE

  • With MPI:

    • Install OpenMPI brew install open-mpi

    • cmake .. -D WITH_OpenMP:BOOLEAN=TRUE -D WITH_MPI:BOOLEAN=TRUE

  • With ElmerGUI:

    • install qt4 with brew install cartr/qt4/qt@4

    • install qwt with brew install cartr/qt4/qwt-qt4

    • cmake .. -D WITH_OpenMP:BOOLEAN=TRUE -D WITH_MPI:BOOLEAN=TRUE -D WITH_ELMERGUI:BOOLEAN=TRUE

  • With ElmerPost:

    • brew cask install xquartz

    • …​.

  • make

  • make install

Ubuntu

  • Download the source code and create build directory as above

  • Install the dependencies sudo apt install git cmake build-essential gfortran libopenmpi-dev libblas-dev liblapack-dev

  • Without MPI:

    • cmake .. -DWITH_OpenMP:BOOLEAN=TRUE

  • With MPI:

    • cmake .. -DWITH_OpenMP:BOOLEAN=TRUE -DWITH_MPI:BOOLEAN=TRUE

  • With ElmerGUI:

    • sudo apt install libqt4-dev libqwt-dev

    • cmake .. -DWITH_OpenMP:BOOLEAN=TRUE -DWITH_MPI:BOOLEAN=TRUE -DWITH_ELMERGUI:BOOLEAN=TRUE

  • make

  • sudo make install

  • The executables are in /usr/local/bin folder, you may add this to your PATH if you will

Licensing

License: GPL v2 License: LGPL v2.1

Elmer software is licensed under GPL except for the ElmerSolver library which is licensed under LGPL license. Elmer is mainly developed at CSC - IT Center for Science, Finland. However, there have been numerous contributions from other organizations and developers as well, and the project is open for new contributions. More information about Elmer’s licensing here.

Package managers

Packaging status

Chocolatey

Chocolatey

Social

Here on this Discord channel you may ask for help or dicuss different Elmer related matters:

Discord Chat

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