This is a listing of builtin Modelica functions, miscellaneous Modelica libraries stored in a git repository. There is also documentation for OpenModelica-specific scripting.
Note that not all libraries are supported or have been tested. Feel free to add bug reports either to OpenModelica (for compiler bugs) or to the GitHub projects for enhancements or bugs in the libraries. Older libraries may contain broken links and images (only libraries with modelica:// links produce good documentation). The Modelica Standard Library is the best supported package in OpenModelica.
| Name | Description | Version |
|---|
 ADGenKinetics | Implementation of generalized kinetics for modeling biochemical reaction networks | |
 ADMSL | | |
 AES | | |
| ATplus | | |
 AdvancedNoise | A library with additional noise modules compatible to the Modelica standard library | 1.1.0 |
 AixLib | | 2.1.0 |
 AlgebraTestSuite | Nonlinear algebraic equation system benchmarks | |
 Annex60 | Library with models for building energy and control systems | 1.0.0 |
 ApproxSpline | Approximation spline library | 1.0.1 |
 Arduino | Library to simulate sketches on a virtual Arduino Uno and to connect models to real-world circuits using the Firmata protocol | 0.3.0 |
| AssertionLevel | | |
 BLDC | Brushless DC drives | 1.9.0 |
 BidiDCDC | Bidirectional DC/DC converter | 1.0.0 |
 BioChem | | 1.1.2 |
 BondGraph | | |
 BondLib | Modelica library for Bond Graph modeling | 2.3 |
 BoundaryInitBlocks | | 1.0.0 |
 BrineProp | Media models for p-h-T-rho-eta properties of aqueous solutions of multiple salts and gases | 0.5.6 |
 BuildSysPro | EDF's Modelica library for modelling buildings and energy systems | 3.5.0 |
 BuildingControlLib | Library for building control | 0.1.0 |
 BuildingSystems | Library for building energy and plant simulation | 2.0.0-beta |
 Buildings | Library with models for building energy and control systems | 11.0.0 |
 BusinessSimulation | Dynamic modeling for business, economics, and ecology | 2.2.0 |
 Chemical | Physical Chemistry | 1.4.1 |
 ClaRa | Simulation of Clausius-Rankine Cycles | 1.8.2 |
 ClaRa_Obsolete | ClaRa obsolete models package | 1.8.2 |
| Clock | | |
 Complex | Complex number with overloaded operators | 4.0.0 |
 ComplexLib | Library for steady-state analysis of AC circuits within phasor domain, version 1.0 | |
 ConPNlib | | |
| Connections | | |
| Correlation | defines correlation between two uncertainty variables | |
 Credibility | Credibility Library - Version 0.2.0 | 0.2.0 |
 DESLib | | 1 |
 DataFiles | Functions for reading and writing data files (empty version) | 0.0.0 |
 DeltaRobot | Library for modelling of Delta Robots | 1.0.2 |
 DeployStructLib | | |
 Design | Design (empty version) | 0.0.0 |
 DisHeatLib | | 1.2 |
| Distribution | | |
 DriveControl | Library to demonstrate control of electrical drives | 4.0.0 |
 DrivingCycles | Driving cycles of vehicles | 0.1.0 |
 DroneLibrary | Modelica libray to model drones(UAVs) | 1.0.0 |
 DymolaCommands | DymolaCommands (empty version) | 0.0.0 |
| DynamicSelect | select static or dynamic expressions in the annotations | |
 Dynawo | Dynawo models library | 1.6.0 |
 EHPTexamples | Package containing basic EV models | |
 EHPTlib | Electric and Hybrid Power train library Rev Jan 2023 | 3.0.0 |
 EMOTH | Electric Mobility OTH | 1.9.0 |
 ElectricalEnergyStorage | Library for electric energy storages | 3.2.2 |
 ElectroMechanicalDrives | Library for the simulation of electro mechanical drives and vehicles | 3.0.0 |
 ExtendedPetriNets | Library to model timed, stochastic Petri nets and state transition diagrams, extended version. | |
 ExternData | Library for data I/O of CSV, INI, JSON, MATLAB MAT, SSV, TIR, Excel XLS/XLSX or XML files | 3.0.5 |
 ExternalLibrary | | |
 ExternalMedia | | 4.0.0 |
 ExternalMemoryLib | | |
| ExternalObject | | |
 ExtremumSeeking | | 0.9.0 |
 FCSys | Modelica fuel cell library | 0.2.6 |
 FCSysTest | Library to test components of FCSys | |
 FMITest | Library of models to test connected FMUs in a Modelica tool | |
 FailureModes | A collection of examples of failure modes for Modelica models | 2.0.0 |
 FastBuildings | Low order building simulation models | 0.0 |
 FaultTriggering | Library for Fault Triggering | 0.6.6 |
 FeedDriveLibrary | | |
 Flight | | |
 FluxTubesExtension | Extension of the Magnetic.FluxTubes package | 1.2.0 |
 FractionalOrder | | |
 FreeFluids | FreeFluids.mo by Carlos Trujillo
This file is part of the Free Fluids application
Copyright (C) 2008-2024 Carlos Trujillo Gonzalez
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 3
as published by the Free Software Foundation
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | 3.2.1 |
| FuelCellLib | | |
| FuzzyControl | | |
 GNU_ScientificLibrary | | 1.0.10 |
 Greenhouses | The Greenhouses Modelica Library | 1 |
 HanserModelica | Educational open source library on <html><a href="https://www.hanser-fachbuch.de/buch/Modelica+Objektorientierte+Modellbildung+von+Drehfeldmaschinen/9783446455511">Modelica, electrical engineering and polyphase electrical machines</a></html> | 2.0.0 |
 HelmholtzMedia | Data and models of real pure fluids (liquid, two-phase and gas) | |
 IBPSA | Library with models for building energy and control systems | 3.0.0 |
 IDEAS | Integrated District Energy Assessment Simulation | 3.0.0 |
 Icons | Icons | |
 IdealizedContact | idealized contact models for simple surfaces | 0.1.0 |
 IndustrialControlSystems | Modelica Industrial Control Systems Library | 2.0.0 |
 KeyWordIO | Read and write data files with key words | 0.12.0 |
 LargeTestSuite | Library for testing of very large models | 2.2.0 |
 LibRAS | | |
 LinearMPC | Modelica predictive control library (by the Institute of Automatic Control, RWTH Aachen University) | 1 |
 MEV | Models of the Multiple Emergency Ventilator | 1.1.1 |
 MVEMLib | | 1.0.1 |
 MagLev | MagneticLevitation | 2.3.0 |
 ManualTracking | Modelica manual tracking library | |
 MessagePack | MessagePack is an efficient binary serialization format for multiple languages. | 0.1.1 |
 ModPowerSystems | | |
 ModelManagement | ModelManagement (empty version) | 0.0.0 |
 Modelica | Modelica Standard Library - Version 4.0.0 | 4.0.0 |
 ModelicaADS | Library for socket communication in Modelica using the ADS protocol (infosys.beckhoff.com) | |
| ModelicaAdditions | Collection of Modelica libraries of DLR | 1.5 |
 ModelicaByExample | | 0.5.0 |
 ModelicaCompliance | A semantics compliance suite for the Modelica language | 3.2 |
 ModelicaDEVS | Discrete Event Systems Library | 1 |
 ModelicaReference | Modelica Reference | 4.0.0 |
 ModelicaServices | ModelicaServices (OpenModelica implementation) - Models and functions used in the Modelica Standard Library requiring a tool specific implementation | 4.0.0 |
 ModelicaTableAdditions | Extension of the CombiTable blocks of the Modelica Standard Library to additionally support reading CSV, EPW (EnergyPlus Weather) and JSON files | 3.1.0 |
 ModelicaTest | Library to test components of package Modelica - Version 4.0.0 | 4.0.0 |
 ModelicaTestOverdetermined | | 4.0.0 |
 Modelica_DeviceDrivers | Modelica_DeviceDrivers - A collection of drivers interfacing hardware like input devices, communication devices, shared memory, analog-digital converters and else | 2.1.1 |
 Modelica_LinearSystems2 | Modelica_LinearSystems2 (version 3.0.0) - Analysis, Synthesis and Modeling of Continuous and Discrete Linear Systems | 3.0.0 |
 Modelica_Noise | Modelica_Noise version 1.0-Beta.1 (Library for random numbers and noise signals; now included in the Modelica Standard Library 3.2.2) | 1.0 Beta.1 |
 Modelica_Requirements | Modelica_Requirements (Version 0.6) - Defining requirements formally and checking them when simulating | 0.6 |
 Modelica_StateGraph2 | Modelica_StateGraph2 (Version 2.1.0) - Modeling of continuous-time state machines | 2.1.0 |
 Modelica_Synchronous | Modelica_Synchronous (version 0.93.0) - Basic synchronous input/output control blocks
that are triggered by clocks | 0.93.0 |
 MultiPhaseMixture | | 1.0.0 |
 NcDataReader2 | Library to read interpolated data from netCDF files and DAP servers | 2.5.0 |
 NeuralNetwork | | 2.1.0 |
 Noise | An open Library for the Generation of Stochastic Signals in Modelica | 0.2 |
 Nuclear | nuclear reactor simulations | |
| OMC_ARGS | | |
| OMC_CLOCK | | |
| OMC_NO_ARGS | | |
| OMC_NO_CLOCK | | |
 ObjectStab | ObjectStab - A Modelica Library for Power System Stability Studies | 2.0.0 |
 ObsoleteModelica3 | Library that contains components from Modelica Standard Library 2.2.2 that have been removed from version 3.0 | 3.2.3 |
 ObsoleteModelica4 | Library that contains components from Modelica Standard Library 3.2.3 that have been removed from version 4.0.0 | 4.0.0 |
 OpenBLDC | Simulation base package | |
 OpenFDM | | |
 OpenHPL | Open-source hydropower library | 2.0.1 |
 OpenHydraulics | A free Modelica library that can be used to model hydraulic components and circuits. | 2.0.0 |
 OpenIMDML | Open Instance Multi-Domain Machine
Library using Modelica | 1 |
 OpenIPSL | Open-Instance Power System Library | 3.0.1 |
| OpenModelica | OpenModelica internal definitions and scripting functions | OpenModelica 1.24.2 |
 OpenModelica_Microgrids | | |
 Optimisers | Model-based optimisation library | 0.1 |
 PDE | | |
 PJLoeslib | | |
 PJlib | | |
 PNlib | | 3.0.0 |
 PVSystems | A Modelica library for photovoltaic system and power converter design | 0.6.2 |
| PVlib | Photovoltaics library | 0.4 |
 PhotoVoltaics | | 2.0.0 |
 PhotoVoltaics_TGM | | 2.0.0 |
 Physiolibrary | System biology, integrative physiology and pathophysiology modelling library | 3.0.0 |
 Physiomodel | Mammalian physiology model | 1.0.0 |
 PlanarMechanics | Library to model 2-dimensional, planar mechanical systems | 1.6.0 |
 PowerGrids | | 1.0.3 |
 PowerSysPro | | 2.3.1 |
 PowerSystems | Library for electrical power systems | 2.0.0 |
 PraxisSimulationstechnik | Library of example and solution models from Peter Junglas' book "Praxis der Simulationstechnik" | |
 PropulsionSystem | | |
 QCalc | Modelica units based on quantity calculus | |
 QCalcTests | Tests for QCalc | |
| QSSFluidFlow | Library for modeling of quasi-steady-state fluid flow with constant fluid density. | |
 RealTimeCoordinationLibrary | Components for defining clocks, time constraints, and invariants. | 1.0.2 |
 RotorAeroLib | | |
 SDF | Scientific Data Format (empty version) | 0.0.0 |
 SMArtIInt | | 0.2.2 |
 SMPS | Building blocks for modeling of switched - mode power converters. | |
 SOFCPoliMi | | |
 ScalableTestGrids | | 1.1.0 |
 ScalableTestSuite | A library of scalable Modelica test models | 2.2.0 |
 Servomechanisms | Servomechanism | |
 SiemensPower | SiemensPower | 2.2 |
 SolarTherm | | 0.2 |
 Soltermica | Solar thermal systems Modelica library | |
 Spot | Power-systems SPOT | 0.706.1 |
 SpotExamples | Spot examples | 0.706.1 |
| StateSelect | | |
 StewartPlatform | Library for modelling of Stewart Platforms | 1.0.2 |
 StreamConnectors | A simple library to learn the basics of stream connectors | |
| Subtask | | |
 SystemDynamics | System Dynamics Library | 2.1.2 |
 TAeZoSysPro | | |
 TAeZoSysPro_testsuite | | |
 TILMedia | TILMedia-Library with thermophysical properties of Fluids and Solids | 1.8.2 ClaRa |
 TRANSFORM | TRANSFORM - TRANsient Simulation Framework Of Reconfigurable Models | 1.0 |
 ThermalSeparation | Thermal Separation Library | 0.2 |
 ThermoCycle | A library for the simulation of thermal systems | |
 ThermoPower | Open library for thermal power plant simulation | 3.1 |
 ThermoSysPro | | 4.0 |
 ThermofluidStream | Library for the modeling of thermofluid streams | 1.2.0 |
 TransiEnt | Library for transient simulation of integrated energy networks with a high share of renewable energies | 2.0.2 |
| Uncertainty | | |
 UserInteraction | UserInteraction (empty version) | 0.0.0 |
 VVDRlib | | |
 VehicleInterfaces | VehicleInterfaces Library (Version 2.0.1) - Interface definitions and architectures for vehicle system modeling | 2.0.1 |
 WasteWater | Modelica WasteWater Library | 2.1.0 |
 WaterHub | Water-Energy Nexus library | |
 Wavelet | Modelica Wavelet Library | |
 WindPowerPlants | Library of wind power plants | 2.0.0 |
 XogenyTest | Stand-alone library to facilitate assertion-based testing of Modelica code | 1.1 |
| abs | Absolute value | |
| acos | Inverse cosine (-1 <= u <= 1) | |
| activeState | Return true if instance of a state machine is active, otherwise false | |
| actualStream | | |
| array | Constructs an array | |
| asin | Inverse sine (-1 <= u <= 1) | |
| assert | Check an assertion condition | |
| atan | Inverse tangent | |
| atan2 | Four quadrant inverse tangent | |
| backSample | First activation of clock is shifted in time before activation of u | Modelica 3.3 |
| cardinality | Number of connectors in connection | Deprecated |
| cat | Concatenate arrays along given dimension | |
| ceil | Round a real number towards plus infinity | |
| change | Indicate discrete variable changing | |
| classDirectory | Non-standard operator | Dymola / MSL 2.2.1 |
| cos | Cosine | |
| cosh | Hyperbolic cosine | |
| cross | Cross product of two 3-vectors | |
| delay | Delay expression | |
| der | Derivative of the input expression | |
 dhcSim | Extension library of Modelica Buildings Library for district heating and cooling components | 1 |
| diagonal | Returns a diagonal matrix | |
| div | Integer part of a division of two Real numbers | |
| edge | Indicate rising edge | |
| exp | Exponential, base e | |
| fill | Returns an array with all elements equal | |
| firstTick | Returns the interval between the previous and present tick of the clock of its argument | |
| floor | Round a real number towards minus infinity | |
| getInstanceName | | Modelica 3.3 |
| hold | Conversion from clocked discrete-time to continuous time | Modelica 3.3 |
| homotopy | Homotopy operator actual*lambda + simplified*(1-lambda) | Modelica 3.2 |
 iPSL | iTesla Power System Library | 1.1.0 |
| identity | Identity matrix of given size | |
| inStream | | |
| initial | True if in initialization phase | |
| initialState | Define inital state of a state machine | |
| integer | Returns the largest integer not greater than x. The argument shall have type Real. The result has type Integer. [Note, outside of a when-clause state events are triggered when the return value changes discontinuously.]. | |
| interval | Returns the interval between the previous and present tick of the clock of its argument | |
| linspace | Real vector with equally spaced elements | |
| log | Natural (base e) logarithm (u shall be > 0) | |
| log10 | Base 10 logarithm (u shall be > 0) | |
| matrix | Returns the first two dimensions of an array as matrix | |
| max | | |
| min | | |
| mod | Integer modulus of a division of two Real numbers | |
| ndims | Number of array dimensions | |
| noClock | Clock of y=Clock(u) is always inferred | Modelica 3.3 |
| noEvent | Turn off event triggering | |
| ones | Returns a one array | |
| outerProduct | Outer product of two vectors | |
| pre | Refer to left limit | |
| previous | Access previous value of a clocked variable | Modelica 3.3 |
| print | Prints to stdout, useful for debugging. | OpenModelica extension |
| product | Product of all array elements | |
| promote | | |
| pure | | Modelica 3.4 |
| reinit | Reinitialize state variable | |
| rem | Integer remainder of the division of two Real numbers | |
| rooted | | |
| sample | Returns the interval between the previous and present tick of the clock of its argument | |
| scalar | Returns a one-element array as scalar | |
| semiLinear | | |
| shiftSample | First activation of clock is shifted in time | Modelica 3.3 |
| sign | Sign of real or integer number | |
| sin | Sine | |
| sinh | Hyperbolic sine | |
| size | Returns dimensions of an array | |
| skew | The skew matrix associated with the vector | |
| smooth | Indicate smoothness of expression | |
| spatialDistribution | Approximation of variable-speed transport of properties | Modelica 3.3 |
| sqrt | Square root | |
| subSample | Conversion from faster clock to slower clock | Modelica 3.3 |
| sum | Sum of all array elements | |
| superSample | Conversion from slower clock to faster clock | Modelica 3.3 |
| symmetric | Returns a symmetric matrix | |
| tan | Tangent (u shall not be -pi/2, pi/2, 3*pi/2, ...) | |
| tanh | Hyperbolic tangent | |
| terminal | True after successful analysis | |
| ticksInState | Returns the number of clock ticks since a transition was made to the currently active state | |
| timeInState | Returns the time duration as Real in [s] since a transition was made to the currently active state | |
| transition | Define state machine transition | |
| transpose | Transpose a matrix | |
| vector | Returns an array as vector | |
| zeros | Returns a zero array | |