PreonLab 7.1.0: Particle-Based CFD Simulation Software

PreonLab 7.1.0 is the latest release of FIFTY2 Technology’s particle-based CFD simulation software, released on April 30, 2026 . This version introduces a new Virtual Wind Tunnel for airflow generation, significant advancements in thermal solver performance, and extensive workflow improvements based on customer feedback .

Key New Features

Virtual Wind Tunnel (Integrated FVM Solver)

A new capability that uses an integrated Finite Volume Method (FVM) solver to generate steady and transient airflows directly within PreonLab . Designed to accelerate early-stage vehicle soiling studies by significantly shortening the feedback loop between airflow generation and design iteration, while reducing reliance on external tools .

Higher-Order Thermal Solver Upgrades

The thermal solver introduced in the previous version has been further improved, delivering better performance and accuracy across validation cases . In a bus bar validation model, simulation performance improved by 50%, with 7 out of 9 heat transfer measurements now falling within 5% of experimental data . These improvements make conjugate heat transfer (CHT) simulations more feasible within a single environment .

Vehicle Dynamics Enhancements

  • Enhanced Full Car Suspension Model (FCSM): Improved stability and robustness for vehicle-fluid interactions, with cornering behavior based on Ackermann kinematics for more realistic steering

  • Distance-Mapped Trajectories: Replaces time-based heading control, making vehicle paths velocity-independent and more predictable

  • External Loads for Rigids: External forces and torques can now be applied to dynamic rigid bodies, enabling frictional torque and rotational motor effects

Workflow & Usability Improvements

  • Stopping Criteria Sensor: Automatically terminates simulations once user-defined conditions are met (threshold-based or convergence-based), reducing manual monitoring

  • Calculated Properties: Expanded Calculation Objects capabilities, allowing users to define dependency-driven setups without keyframes or scripts

  • Scene Access & Concurrency Control: Prevents unintended overwrites when multiple users access shared scenes

  • Sensor Data Export: Added EnSight Gold format support alongside existing CSV export

  • Function Editor: Now includes auto-suggestions to reduce errors when building expressions

PreonPy API Changes

  • Added support for Python 3.14; removed support for Python 3.9

  • New functions: global_orientation(), global_position() for Rigid, SensorPlane, FloatFieldObject, and VectorFieldObject objects

  • Added Scene.import_alembic_mesh and Scene.alembic_mesh_names

Preonlab7.1.0
Preonlab7.1.0 download