Smarter workflows, finer mesh control, stronger security: here’s everything that landed in ToffeeX this April.
The April 2026 update delivers improvements across the board: from how you visualize results and manage runs, to how your team shares materials and secures accounts. Here’s the full breakdown.
New Field Viewer with Slicing Tools
The Field Data Viewer has been upgraded with new slicing tools, allowing you to view temperature, pressure, velocity, and solidity fields at any position and orientation within the domain.
Run Queuing
If you don’t have enough CPUs available to launch a run immediately, you can now queue up to 10 runs at a time. Queued runs are processed sequentially in first-in, first-out (FIFO) order, so you can set up your entire design study, leave ToffeeX to process it automatically, and come back to a full set of results.
Rename Settings Directly at Duplication
When duplicating a run, you can now rename the associated Mesh, Simulation, and Design settings right at the point of duplication. This keeps your project organised from the start and makes it easier to distinguish between configurations at a glance and reuse the right settings for new runs.
Original STL File Names are Now Preserved
When uploading STL geometry files, ToffeeX will now automatically retain the original file name as the default name for the uploaded geometry.
Share Your Material Database Across Your Organisation
Custom materials saved in the Material Properties Database can now be shared across your entire organisation. This ensures every team member is working from the same material properties, improving consistency and eliminating the effort of redefining materials project by project.
Two-Factor Authentication via Authenticator App
You can now secure your ToffeeX account with two-factor authentication (2FA) using an authenticator app such as Google Authenticator or Microsoft Authenticator. This adds a critical second layer of security beyond your password. Configure it directly in your account settings.
Mesh Refinement Levels for Precise Control
Mesh refinement can now also be specified using Refinement Levels. This mode defines how many times the mesh in a region is bisected relative to the starting cell size. This gives you precise, predictable control over mesh resolution without guesswork.
New Boundary Condition: Free-Slip Wall
A new Free-Slip Wall boundary condition is now available for simulations. This models a frictionless wall surface where the fluid moves tangentially along the wall with no viscous resistance, in contrast to the No-Slip wall condition, where fluid velocity at the wall is zero.
Better Convergence for Natural Convection
The temperature relaxation factor used during validation runs for natural convection problems has been adjusted, delivering improved convergence for buoyancy-driven flows. Users running these simulations on the Latest toolbox version can expect faster and more reliable convergence.
Minimum Feature Size Now Filters by Design Region Only
The Minimum Feature Size constraint is now applied exclusively within the designable region, i.e., areas where the Volume Fraction is not set to Fluid Only or Solid Only. Previously, this constraint was evaluated across the entire domain, including non-designable regions, which could negatively influence the optimizer. This update ensures the constraint focuses only where material distribution is free to vary, improving the quality and accuracy of generated designs. We recommend updating to the latest toolbox version to benefit from this improvement.
Improved Optimization for Heat Advection
The optimization algorithm for thermo-fluid designs where heat advection is predominant has been improved, with particular benefits for 2D Extruded Optimizations, which now deliver an improved solidity distribution near heat sources. Both 2D and 3D cases benefit from this update.
