This information is part of the Modelica Standard Library maintained by the Modelica Association.

Version 3.2.1 is backward compatible to version 3.2, that is models developed with versions 3.0, 3.0.1, 3.1, or 3.2 will work without any changes also with version 3.2.1. This version is a "clean-up" with major emphasis on quality improvement and tool compatibility. The goal is that all Modelica tools will support this package and will interpret it in the same way. Short Overview:

• This version of the Modelica package is fully compatible to Modelica Specification 3.2 revision 2.
  (Especially, some operators used in package Modelica, such as "rooted", have been standardized in 3.2 rev. 2, as well as vendor specific annotations. Furthermore, ambiguous/unclear descriptions in the specification have been corrected/improved. One important improvement in packages Modelica and ModelicaTest is that the initialization has been fully defined in all example models, in order that all tools can produce the same result without relying on tool heuristics).
• About 400 tickets have been fixed for this release, and especially all compliance issues and all relevant defect issues.
• An open source implementation of the table blocks has been provided by ITI GmbH. This work has been paid by Modelica Association. As a result, all parts of package Modelica are now available in a free implementation. Additionally new features have been added to the table blocks by this implementation:
  • The table outputs can be differentiated once.
  • Support of binary MATLAB MAT-file formats v6 and v7
  • New option ConstantSegments for parameter Smoothness
  • New option NoExtrapolation for parameter Extrapolation
  • Support of tables provided in the C-Code (usertab.c, for realtime systems without file system)
• Icons have been re-designed by Wolfram Research to provide a more modern view.
• The Modelica.Media.Air.MoistAir media model has been improved so that it can be used in a temperature range of 190 ... 647 K (previously: 240 ... 400 K).
• New media models for air (ReferenceAir with a large operating range: 30 ... 2000 K, 0 ... 2000 MPa), for moist air (ReferenceMoistAir with a large operating range: 143.15 ... 2000 K, 0 .. 10 MPa; but 1-2 orders of magnitude slower as Modelica.Media.Air.MoistAir), and the refrigerant R134a are included in the Modelica.Media library in order to improve the modeling of air conditioning systems especially in aircraft. These models have been developed by XRG Simulation GmbH as part of the Clean Sky JTI project (Project number: 296369; Theme: JTI-CS-2011-1-SGO-02-026). The partial financial support by the European Union for this development is highly appreciated.
• 60 models and blocks and 90 functions are newly included, for details see below.

This release of package Modelica, and the accompanying ModelicaTest, has been tested with the following tools (the tools are listed alphabetically. At the time of the test, some of the tools might not yet supported the complete Modelica package):

• CyModelica
• Dymola 2014 (Windows 64 bit)
  Regression test results with regards to Modelica 3.2 are available in ticket #1114.
• Dymola 2014 FD01 development with pedantic flag (Windows 64 bit)
  ("pedantic flag" means that strict Modelica compliance is checked. Dymola 2014 fails with pedantic flag, e.g., because the annotation DocumentationClass was not standardized when this version of Dymola was released).
• Maplesim Parser
• MWorks 3.2
• OpenModelica 1.9.0 Beta4+dev (Windows, Linux, Mac)
  Test reports for the daily builds are available here.
• SimulationX 3.6

The following Modelica packages have been tested that they work together with this release of package Modelica (alphabetical list):

• Buildings 1.4 (LBNL)
• FlexibleBodies 2.0.1 (DLR)
• Modelica_Synchronous 0.91 (DLR)
• Optimization 2.2 (DLR)
• PowerTrain 2.2.0 (DLR)

The new open source tables have been tested by T. Beutlich (ITI):

• 193 Modelica test models for compatibility check with previous table implementation (available in ModelicaTest.Tables). Performed tests with SimulationX 3.5.707 (32 bit) and Dymola 2013 FD01 (32 bit). Furthermore a basic check was performed in OpenModelica to make sure it works in general.
• The two C source files (Modelica/Resources/C-Sources/ModelicaStandardTables.c; ModelicaMatIO.c) have been tested to successfully compile for the following platforms
     Windows 32 and 64 bit
     Linux 32 and 64 bit
     dSPACE SCALEXIO
     dSPACE DS1005 (no file system)
     dSPACE DS1006 (no file system)
     dSPACE DS1401 (no file system)
• The following compilers/environments have been used for the platform evaluation
     Microsoft compilers (VC6 and ≥ VS2005 (Win32 and x64))
     MinGW (GCC 4.4.0 and GCC 4.7.2)
     Cygwin (GCC 4.3.0)
     Open WATCOM 1.3
     LCC 2.4.1
     Borland C/C++ (free command line tools) 5.5
     GCC 4.x on Linux
     GCC 3.3.5 (for DS1006)
     Microtec PowerPC Compiler 3.7 (for DS1005)

The exact difference between package Modelica version 3.2 and version 3.2.1 is summarized in a comparison table.

About 400 trac tickets have been fixed for this release. An overview is given here. Clicking on a ticket gives all information about it.

The following new components have been added to existing libraries: