TCAE

This release brings major upgrades across the TCAE ecosystem, including updated core technologies,
improved multiphase capabilities, better numerical robustness, workflow simplifications,
and a wide range of fixes and usability enhancements. The result is a more capable,
more stable, and more efficient simulation environment for demanding engineering projects.

Core Technology Upgrades

TCAE now includes an upgrade to ParaView 6.1.0, bringing improved visualization compatibility,
better performance, and access to newer post-processing capabilities. The platform has also been updated
to the newest OpenFOAM-dev base, together with a broader integration upgrade that improves compatibility,
maintainability, and readiness for future development.

• ParaView upgraded to 6.1.0
• OpenFOAM-dev updated to the latest development base
• Broader OpenFOAM integration upgrade with multiple compatibility and stability improvements

Solver and Physics Enhancements

This release significantly strengthens support for advanced physics, especially in the area of
multiphase flow simulations. Several improvements were introduced to make VoF workflows more robust,
more practical, and easier to deploy in production. Additional rheology and transport model updates
also improve flexibility for incompressible flow applications.

• Improved multiphase VoF simulations for better stability and usability
• greenSolver extended to support multiphase VoF and multiphase cavitation
• Rheology viscosity models added for incompressible simulations
• Sutherland model input streamlined for simpler setup
• Pressure-jump interface boundary condition added
• Dissipation bounding using fvConstraints for improved numerical stability

Interfaces, Mesh Motion, and Rotating Machinery

Several important improvements were made in the area of mesh interfaces and moving mesh workflows.
These changes increase robustness in complex transient simulations and are especially relevant
for turbomachinery, rotating equipment, and simulations involving mesh interaction.

• AMI replaced by NCC in selected workflows
• Support for partially overlapping interfaces
• MRF to dynamic mesh bug fixes
• Dynamic mesh velocity boundary condition fixes

Boundary Conditions and Case Setup

Case preparation has been further simplified by improving configuration structure, input consistency,
and boundary condition handling. These changes reduce setup complexity and make projects easier to maintain.

• Unified physicalProperties dictionary for cleaner material setup
• Reference values section added for improved consistency in post-processing and reporting
• Table boundary condition input reworked
• Mapped initial boundary condition fixes
• ‘Not used’ patch type available for all STL files

Parallel Performance and HPC Improvements

TCAE continues to improve support for larger simulations and parallel workflows. This release removes
some previous limitations and adds options that help with scalability, data handling, and cleaner execution
in HPC environments.

• Particles no longer need to keep interfaces on a single processor
• Collated file handling option added
• Warnings suppressed for CalculiX parallel runs to reduce output noise

Post-Processing and Visualization

Visualization and result interpretation have also been improved. The release introduces better support
for ParaView state handling and refines selected visualization workflows to make result inspection easier
and more reliable.

• PVSM state saving support added
• Region visualization reworked
• calcSurfaceQuantities improved
• Transient residual plotting fix

Workflow and Architecture Improvements

Several internal and workflow-level improvements help make TCAE cleaner, more modular, and more aligned
with newer OpenFOAM concepts. These changes are important for both long-term maintainability and advanced user workflows.

• Switch from fvOptions to fvModels for porosity and passive scalars
• TCFDwriteObjects function object added for writing polyFaces
• Functions moved into a dedicated dictionary structure for cleaner organization
• URel and Uart reading/writing improved

New Tutorials and Example Cases

To help users adopt new capabilities faster, this release also adds and updates several tutorial cases.
These examples cover a range of practical engineering applications and serve as useful starting points
for real projects.

• Human upper airways
• Centrifugal pump with non-overlapping interfaces
• Rushton impeller VoF simulation
• World Cup ball aerodynamics
• Cyclone separator
• Axial fan acoustic benchmark update
• Labyrinth water drop

Stability Improvements and Bug Fixes

In addition to new features, this release includes a large number of bug fixes and quality improvements.
Many of these are connected to the transition toward newer OpenFOAM foundations, while others address
specific issues reported in practical workflows.

• Component removal crash fixed
• Client-server communication bug fixed
• Status handling bug fixed
• External geometry path fix on Windows
• Condition visibility bug fixed
• Axial fan acoustic benchmark STL fix
• UDF script changes in TOPT
• Multiple additional fixes related to the OpenFOAM 13 transition

Summary

Overall, this TCAE release delivers meaningful progress in several key areas: multiphase simulation, numerical robustness, parallel scalability, workflow clarity, and post-processing usability. It also expands the available tutorial set and improves many details that matter in daily engineering work.