OpenModelica

OpenModelica is an open-source Modelica-based modeling and simulation environment intended for industrial and academic usage. Its short-term and long-term goals are:

• The short-term goal is to develop an efficient interactive computational environment for the Modelica language, as well as a rather complete implementation of the language. It turns out that with support of appropriate tools and libraries, Modelica is very well suited as a computational language for development and execution of both low level and high level numerical algorithms, e.g. for control system design, solving nonlinear equation systems, or to develop optimization algorithms that are applied to complex applications.

• The longer-term goal is to have a complete reference implementation of the Modelica language, including simulation of equation based models and additional facilities in the programming environment, as well as convenient facilities for research and experimentation in language design or other research activities. However, our goal is not to reach the level of performance and quality provided by current commercial Modelica environments that can handle large models requiring advanced analysis and optimization by the Modelica compiler.

Documentation

The OpenModelica users guide as pdf or epub or as html. The OpenModelica API documentation. More documentation can be found here.

Export an FMU from OpenModelica

To export an FMU from a Modelica model one can use a exportFMU.mos script:

// start exportFMU.mos script
loadModel(Modelica); getErrorString();
// loadModel(AnotherLibraryIfNeeded); getErrorString();
// loadFile("SomeMOFileContainingYourModel.mo"); getErrorString();
translateModelFMU(ModelName, "2.0", "cs"); getErrorString();
// end exportFMU.mos

One can run the exportFMU.mos script via the omc[.exe] executable. On Windows:

%OPENMODELICAHOME%\bin\omc exportFMU.mos

On Linux (if OpenModelica is installed via apt-get):

omc exportFMU.mos

On MacOS X:

omc exportFMU.mos

Documentation of the function translateModelFMU.

Link to OpenModelica latest binaries

The latest release binaries for Windows can be found here. The latest nightly-builds binaries for Windows can be found here.

We also support Linux and Mac OS installations.