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:

Modelica.Blocks.Logical.
RSFlipFlop	Basic RS flip flop
Modelica.Blocks.Math.
MinMax	Output the minimum and the maximum element of the input vector
LinearDependency	Output a linear combination of the two inputs
Modelica.Blocks.Nonlinear.
SlewRateLimiter	Limit the slew rate of a signal
Modelica.Electrical.Digital.Memories
DLATRAM	Level sensitive Random Access Memory
DLATROM	Level sensitive Read Only Memory
Modelica.Electrical.Digital.Multiplexers
MUX2x1	A two inputs MULTIPLEXER for multiple value logic (2 data inputs, 1 select input, 1 output)
Modelica.Electrical.Machines.Examples.InductionMachines.
IMC_Initialize	Steady-State Initialization example of InductionMachineSquirrelCage
Modelica.Electrical.Machines.Examples.SynchronousMachines.
SMPM_VoltageSource	PermanentMagnetSynchronousMachine example fed by FOC
Modelica.Electrical.Polyphase.Examples.
TestSensors	Example for polyphase quasiRMS sensors: A sinusoidal source feeds a load consisting of resistor and inductor
Modelica.Electrical.Polyphase.Sensors.
VoltageQuasiRMSSensor	Continuous quasi voltage RMS sensor for polyphase system
CurrentQuasiRMSSensor	Continuous quasi current RMS sensor for polyphase system
Modelica.Electrical.Polyphase.Blocks.
QuasiRMS	Determine quasi RMS value of a polyphase system
Modelica.Electrical.Polyphase.Functions.
quasiRMS	Calculate continuous quasi RMS value of input
activePower	Calculate active power of voltage and current input
symmetricOrientation	Orientations of the resulting fundamental wave field phasors
Modelica.Electrical.Spice3.Examples.
CoupledInductors CascodeCircuit Spice3BenchmarkDifferentialPair Spice3BenchmarkMosfetCharacterization Spice3BenchmarkRtlInverter Spice3BenchmarkFourBitBinaryAdder	Spice3 examples and benchmarks from the SPICE3 Version e3 User's Manual
Modelica.Electrical.Spice3.Basic.
K_CoupledInductors	Inductive coupling via coupling factor K
Modelica.Electrical.Spice3.Semiconductors.
M_NMOS2 M_PMOS2 ModelcardMOS2	N/P channel MOSFET transistor with fixed level 2
J_NJFJFE J_PJFJFE ModelcardJFET	N/P-channel junction field-effect transistor
C_Capacitor ModelcardCAPACITOR	Semiconductor capacitor model
Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.
IMC_DOL_Polyphase IMS_Start_Polyphase SMPM_Inverter_Polyphase SMEE_Generator_Polyphase SMR_Inverter_Polyphase	Polyphase machine examples
Modelica.Fluid.Sensors.
MassFractions MassFractionsTwoPort	Ideal mass fraction sensors
Modelica.Media.
R134a	R134a (Tetrafluoroethane) medium model in the range (0.0039 bar .. 700 bar, 169.85 K .. 455 K)
Modelica.Media.Air.
ReferenceAir	Detailed dry air model with a large operating range (130 ... 2000 K, 0 ... 2000 MPa) based on Helmholtz equations of state
ReferenceMoistAir	Detailed moist air model (143.15 ... 2000 K)
MoistAir	Temperature range of functions of MoistAir medium enlarged from 240 - 400 K to 190 - 647 K.
Modelica.Media.Air.MoistAir.
velocityOfSound isobaricExpansionCoefficient isothermalCompressibility density_derp_h density_derh_p density_derp_T density_derT_p density_derX molarMass T_psX setState_psX s_pTX s_pTX_der isentropicEnthalpy	Functions returning additional properties of the moist air medium model
Modelica.Thermal.HeatTransfer.Components.
ThermalResistor	Lumped thermal element transporting heat without storing it (dT = R*Q_flow)
ConvectiveResistor	Lumped thermal element for heat convection (dT = Rc*Q_flow)
Modelica.MultiBody.Examples.Constraints.
PrismaticConstraint RevoluteConstraint SphericalConstraint UniversalConstraint	Demonstrates the use of the new Joints.Constraints joints by comparing them with the standard joints.
Modelica.MultiBody.Joints.Constraints.
Prismatic Revolute Spherical Universal	Joint elements formulated as kinematic constraints. These elements are designed to break kinematic loops and result usually in numerically more efficient and reliable loop handling as the (standard) automatic handling.
Modelica.Mechanics.Rotational.
MultiSensor	Ideal sensor to measure the torque and power between two flanges and the absolute angular velocity
Modelica.Mechanics.Translational.
MultiSensor	Ideal sensor to measure the absolute velocity, force and power between two flanges
Modelica.Math.
isPowerOf2	Determine if the integer input is a power of 2
Modelica.Math.Vectors.
normalizedWithAssert	Return normalized vector such that length = 1 (trigger an assert for zero vector)
Modelica.Math.BooleanVectors.
countTrue	Returns the number of true entries in a Boolean vector
enumerate	Enumerates the true entries in a Boolean vector (0 for false entries)
index	Returns the indices of the true entries of a Boolean vector
Modelica.Utilities.Files.
loadResource	Return the absolute path name of a URI or local file name
Modelica.SIunits.
PressureDifference MolarDensity MolarEnergy MolarEnthalpy TimeAging ChargeAging PerUnit DerPressureByDensity DerPressureByTemperature	New SI unit types