Multi-Domain Systems (SimulationX)

Multi-Domain Systems (SimulationX) marks a new era in the history of its evolution since it is the first major release under the umbrella of Keysight Technologies, a spin-off of Hewlett-Packard, into which the ESI Group is now fully integrated as of May 1, 2025. Keysight, whose name is a blend of key and insight, manufactures electronic test and measurement equipment and software making it the ideal partner for system simulation.

Major New Features of Multi-Domain Systems (SimulationX) 2025.1

Libraries

• The Batteries library has been extended with Cell and Stack models for dynamic behavior and aging effects plus improved performance for Detailed Stack models.
• The Heat Transfer library includes new two-phase heat exchangers where both phases can have different velocities.
• The Ship Energy Systems library has been completely overhauled and now includes new fluids and sub-components for modeling liquid gas fuel transport and vaporization processes
• Driving Maneuvers and MBS Mechanics libraries now allow for loading and visualizing OpenCRG files as an alternative to OBJ files for the road surface
• New ESP Controller model for hydraulic brake systems
• Numerous new sample models

User Experience 

• New FEM Import tool (beta) for generating elastic 3D mechanical models in Modelica from reduced FEM models saved in Standard Input Data files (SID)
• SimulationX command line option allows for simulations to be executed in batch mode or interactive mode with extensive configuration options
• Arrangement of multiple views of a single model is now included with the model, and customizations of the ribbon menu can now be saved.

Code Export 

• Additional license for code export permitting the export of license-free FMUs without source code
• Overhauled code export workflow with new options to export/import partial models or single components as FMUs
• Obfuscation of source code now helps to protect intellectual property

Multi-Domain Systems (SimulationX) marks a new era in the history of its evolution since it is the first major release under the umbrella of Keysight Technologies, a spin-off of Hewlett-Packard, into which the ESI Group is now fully integrated as of May 1, 2025. Keysight, whose name is a blend of key and insight, manufactures electronic test and measurement equipment and software making it the ideal partner for system simulation.

Major New Features of Multi-Domain Systems (SimulationX) 2025

Libraries

• The Batteries library has been extended with Cell and Stack models for dynamic behavior and aging effects plus improved performance for Detailed Stack models.
• The Heat Transfer library includes new two-phase heat exchangers where both phases can have different velocities.
• The Ship Energy Systems library has been completely overhauled and now includes new fluids and sub-components for modeling liquid gas fuel transport and vaporization processes
• Driving Maneuvers and MBS Mechanics libraries now allow for loading and visualizing OpenCRG files as an alternative to OBJ files for the road surface
• New ESP Controller model for hydraulic brake systems
• Numerous new sample models

User Experience 

• New FEM Import tool (beta) for generating elastic 3D mechanical models in Modelica from reduced FEM models saved in Standard Input Data files (SID)
• Multi-Domain System (SimulationX) command line option allows for simulations to be executed in batch mode or interactive mode with extensive configuration options
• Arrangement of multiple views of a single model is now included with the model, and customizations of the ribbon menu can now be saved.

Code Export 

• Additional license for code export permitting the export of license-free FMUs without source code
• Overhauled code export workflow with new options to export/import partial models or single components as FMUs
• Obfuscation of source code now helps to protect intellectual property

Multi-Domain Systems (SimulationX) expands its application range by introducing e.g. new heat exchanger models that significantly improve usability, performance and numerical stability. This is the start of a thorough rework that will continue into the next releases. The coverage for electric drive applications improved through adding a brushless DC motor model.

Also, several new and enhanced features in e.g. result chart handling, curve data management as well as auto completion and error checking of expressions improve the overall user experience. User-side licensing management became again more flexible.

Last but not least parallel execution on several processor cores has been introduced for the first time for CVODE and Fixed Step solvers.

Note: Starting from Multi-Domain Systems (SimulationX) 2024 the Green City library is distributed and licensed directly through the library provider EA Systems Dresden GmbH.  

Major New Features of Multi-Domain Systems (SimulationX) 2024 

Libraries

• Redesign of heat exchanger models with focus on usability, performance and numerical stability
• NTU models for heat exchangers to facilitate concept and early-stage design
• Expansion of CoolProp fluid library interface into Hydraulics and Pneumatics
• Brushless DC (BLDC) electric motor model with focus on automotive applications, but also suitable for other industrial domains like machinery, medical equipment or consumer electronics
• Standardized classification of Driving Maneuvers models according to ISO 11010
• Enhanced visualization of 3D geometries and sceneries

User Experience 

• Possibility to add measurement labels to result charts in any number, enhanced crosshair functions for result plot measurements
• Intelligent subsampling and zoom function for large curve data sets
• New numerical result views for scalar, vector and matrix variables, as well as numerical watch views for user-defined expressions
• Flexible handling of unresolved expressions in parameters with graphical notification in the model view
• Note and data annotations on parameters through parameter dialogs
• Thoroughly reworked autocompletion of expressions (IntelliSense)
• Enhanced and streamlined crash reporting

Licensing

• It is now possible to return module or feature licenses o the license server during runtime without restarting SimulationX
• Counted borrowing of tokens is now possible

Multi-Domain Systems (SimulationX) expands its application range by introducing e.g. new heat exchanger models that significantly improve usability, performance and numerical stability. This is the start of a thorough rework that will continue into the next releases. The coverage for electric drive applications improved through adding a brushless DC motor model.

Also, several new and enhanced features in e.g. result chart handling, curve data management as well as auto completion and error checking of expressions improve the overall user experience. User-side licensing management became again more flexible.

Last but not least parallel execution on several processor cores has been introduced for the first time for CVODE and Fixed Step solvers.

Note: Starting from SimulationX 2024 the Green City library is distributed and licensed directly through the library provider EA Systems Dresden GmbH.  

Major New Features of Multi-Domain Systems (SimulationX) 2024 

Libraries

• Redesign of heat exchanger models with focus on usability, performance and numerical stability
• NTU models for heat exchangers to facilitate concept and early-stage design
• Expansion of CoolProp fluid library interface into Hydraulics and Pneumatics
• Brushless DC (BLDC) electric motor model with focus on automotive applications, but also suitable for other industrial domains like machinery, medical equipment or consumer electronics
• Standardized classification of Driving Maneuvers models according to ISO 11010
• Enhanced visualization of 3D geometries and sceneries

User Experience 

• Possibility to add measurement labels to result charts in any number, enhanced crosshair functions for result plot measurements
• Intelligent subsampling and zoom function for large curve data sets
• New numerical result views for scalar, vector and matrix variables, as well as numerical watch views for user-defined expressions
• Flexible handling of unresolved expressions in parameters with graphical notification in the model view
• Note and data annotations on parameters through parameter dialogs
• Thoroughly reworked autocompletion of expressions (IntelliSense)
• Enhanced and streamlined crash reporting

Licensing

• It is now possible to return module or feature licenses o the license server during runtime without restarting SimulationX
• Counted borrowing of tokens is now possible

Multi-Domain Systems (SimulationX) 4.5 places a key focus on usability and user experience. New libraries and functions enable, e.g., the automation of workflows and the embedding of publicly available fluid definitions.

The full move towards token licensing provides fully flexible access to the complete range of functions and libraries so that users can quickly adapt to changing simulation needs.

Last but not least, a new startup experience and configuration management give beginners a heads-on ramp-up in using SimulationX and enable expert users to manage their work environment more efficiently.

Key new features of Multi-Domain Systems (SimulationX) 4.5

Libraries

• Workflow Automation Library: Automate workflows for simulation and reporting
• CoolProp Fluids: Use of publicly available fluid data
• FMI for Structural Mechanics (VPS): Augment 3D models for crash with 1D system or subsystem models
• New/enhanced model elements: Improve solution accuracy and analysis quality

User Experience 

• New Start Sequence: Manage licenses and modules more easily
• Beginners’ Tour: Quickly learn to make your first steps
• Configuration Management: Preserve your environment settings for various scenarios
• New help view inside Multi-Domain System (SimulationX): Access help content side by side with your work
• Extension of the Sample Model collection: Better understanding of driving maneuvers, fuel cells, and the new libraries

Licensing

• Tokenization: Decide on and change flexibly the modules and functions you need
• Library Mergers: Get more value out of your license
• Custom licenses according to Modelica 3.5 specification: Use Multi-Domain System (SimulationX) as a platform for distributing your own libraries

Multi-Domain Systems (SimulationX) 4.5 places a key focus on usability and user experience. New libraries and functions enable, e.g., the automation of workflows and the embedding of publicly available fluid definitions.

The full move towards token licensing provides fully flexible access to the complete range of functions and libraries so that users can quickly adapt to changing simulation needs.

Last but not least, a new startup experience and configuration management give beginners a heads-on ramp-up in using SimulationX and enable expert users to manage their work environment more efficiently.

Key new features of Multi-Domain Systems (SimulationX) 4.5 

Libraries

• Workflow Automation Library: Automate workflows for simulation and reporting
• CoolProp Fluids: Use of publicly available fluid data
• FMI for Structural Mechanics (VPS): Augment 3D models for crash with 1D system or subsystem models
• New/enhanced model elements: Improve solution accuracy and analysis quality

User Experience 

• New Start Sequence: Manage licenses and modules more easily
• Beginners’ Tour: Quickly learn to make your first steps
• Configuration Management: Preserve your environment settings for various scenarios
• New help view inside Multi-Domain System (SimulationX): Access help content side by side with your work
• Extension of the Sample Model collection: Better understanding of driving maneuvers, fuel cells, and the new libraries

Licensing

• Tokenization: Decide on and change flexibly the modules and functions you need
• Library Mergers: Get more value out of your license
• Custom licenses according to Modelica 3.5 specification: Use SimulationX as a platform for distributing your own libraries