This release has the following new templates and modules:

General Gear Template: The new General Gear template utilizes a more general meshing algorithm to simulate more types of gear machines. It will simulate both internal and external gears with spurs or helical teeth. The template can also simulate multiple gears engaging with each other such as in a planetary gear set. The new template also incorporates many useful features including boundary layer meshes on gear surfaces, automatically detecting/setting of helical angle, number of teeth, and rotation speed etc. The General Gear Template can be used to model gear boxes, gear pumps as well as similar types of fluid machines such as screw machines.

Turbo-Post: Turbo-Post provides special post processing for turbomachines, for example centrifugal pumps. The first version supports meridional and cascade plots of the results obtained from a turbo machine simulation.

Optimization: An optimization engine is fully integrated into the solver, along with corresponding user interfaces. This module utilizes the Bayesian Inference method for optimization and Latin Hypercube Sampling for Design of Experiments (DOE). It is seamlessly embedded within the existing solver GUI, significantly simplifying the process for engineers to integrate optimization into their regular simulation tasks. Users have the option to utilize the Simerics Volume Remesh capability or a third-party parametric geometry modeler through a dedicated interface for performing geometry optimization.

Acoustic: There are three noise models implemented in the new module including broadband noise source models for both surface and volume sources; the Ffowcs-Williams Hawkings (FWH) Integral Source-Receiver Model; and the Lighthill stress model.

PID controller: Proportional–Integral–Derivative controller (PID controller) is a control loop mechanism employing feedback that is widely used in industrial control systems and a variety of other applications requiring continuously modulated control. This PID Controller module can mimic the behavior of a real controller with given parameters, and can also be used to optimize the parameters for a real controller.

The new enhancements in the existing templates are described as follows:

• Vehicle Template: A rotating wheel volume is added to the Vehicle Template mesher. This is useful for transient moving vehicle simulations (e.g. water fording with inclined entry and exit).
• Piston Cooling Template: Original Piston Cooling Template has its own data exchange module. The new version uses the general Data Exchange module for coupling in conjugate heat transfer. The new version also allows a user to run a flow only simulation without considering heat transfer.
• Scroll Template: Improvement in mesh generation.
• 3D Ball Valve Template: Background velocity/self-rotation velocity has been added to the template.
• Data Exchange Module: Multiple coupling methods have been added, including Automatic Exchange Coefficient and Local Exchange Coefficient with user specified Y+. Mixed time scale coupled runs using Automatic Exchange Coefficient method do not need any inputs from prior runs, making the method more automatic and robust. Energy conservation between coupled simulations is strongly enforced in the new formulation. A "rotor" boundary condition is added which utilizes rotational thermal symmetry to improve the efficiency of mixed time scale coupling for rotating machines - for both transient and steady state runs.
• Marine Template: Simulation can run with regular or irregular waves.
• Rolling Piston Template: Now user can specify the starting crack angle of the piston.

New Batch Run: Many new commands and functions are now supported by the new batch run script. In the script, the user can load one or more projects; run one or more projects one time or multiple times from an initial condition or from previous results with specified time steps/iterations. Users can also access system commands inside a batch file. The batch run also locks the licenses, as well as cluster computer nodes, during the switch between different project runs in the same batch run so the next simulation can start immediately without waiting in the queue again. This feature helps to avoid disruption of coupled simulations.

Expression: Support for variables in input filenames. Added full utf-8 support and updated xml read/write.

Python: Starting from version 6, users are able to invoke Python functions through Simerics expressions. The Simerics software installation will include the Python Standard Library and NumPy Library, eliminating the need for a separate Python installation. Users can also add additional Python libraries as needed. Importantly, the included Python package will not interfere with any other Python packages installed on the same computer. In addition to standard Python functionality, all data accessible in Simerics expressions, including single value parameters and 3D fields, can be utilized and processed within Python functions.

New QT library: Upgraded from QT 4 to QT version 5.13.

Error message: Improved error messages give more specific details of the error.

Boundary Layer Mesh: General purpose prismatic cell layer extrusion from any boundary mesh. The mesher is very robust at generating valid prism layered mesh of varying thickness with mesh clustering which can be used for various applications.

Importing Nastran Mesh: Now allows Nastran multi line card data with short lines. Added reading ANSA names into Nastran surfaces import.

Annulus Template Mesh: With user specified CAD surfaces.

Results Interpolation: Interpolating results from different simulations, even when using different meshes or geometries. Additionally, provide users with options to fine-tune the interpolation process, such as selecting the specific volume for interpolation. This functionality serves various purposes, including improving initial conditions by utilizing results from coarse mesh simulations, combining simulation data from individual components for initial conditions, or facilitating post-processing of complex systems.

Hybrid VOF: Solving explicit VOF together with implicit flow and heat transfer to take advantage of the benefit from both approaches.

Barotropic Liquid Model: A new cavitation model, barotropic model is added to the new release. In this model, a barotropic state law is introduced that links explicitly the mixture fluid density to the local static pressure.

Realizable k-e Model: Differs from standard k-ε model, this model uses an alternative formulation for turbulent viscosity (enforces realizability condition for Reynolds stress components), Dissipation rate (ε) equation based on dynamic equation of mean-square vorticity fluctuation. Likely to give better performance compared to standard k-ε model for rotating flows, jets, mixing layer, boundary layer flows under strong adverse pressure gradient, separated and recirculating flows.

New Time Step Definition: More time step definition methods are introduced for transient runs. For rotation system or reciprocating system, user can directly define time steps for each revolution or period. User can also define number of time steps as a function of other variables, such as time.

Dp-Q resistance: Use experimental Dp-Q curve directly in the simulation without deriving the coefficients from the curve.

New Wall Function: A “modified wall function” was added for Turbulence wall function.

Porous Wall: Fluid can enter the domain through a porous wall.

Releasing particle/streamline: Release particle/streamline from user specified point(s), lines and regions, such as cylindrical, cubic, and spherical regions.

Saving iso-surface/streamline for Post-processing in 3^rd party software:

Saving animation data to EnSight Case files:

Distribution data output: Distribution text file outputs are enabled for all primary variables for multiphase, heat and flow solvers at interfaces.

Color Map: FLIR related color maps including: Ironbar, Rainbow, and Glowbow. These are useful to direct compare simulation results with an inferred image.

Display of vortex quantity: Q Criterion