FEATool Multiphysics 1.18.1 Released with CFD, UI & Customization Improvements

FEATool Multiphysics 1.18.1 (with CFDTool 1.11.1) has now been released with the following new features:

- UI & graphics performance - smoother, more responsive experience setting up models, viewing results, and working with larger/complex simulations.

- Mean pressure outflow BC for CFD - enforces average pressure over an outflow boundary instead of fixing it pointwise, useful when the local pressure distribution needs to adjust naturally.

- Automatic pressure normalization for CFD - removes the arbitrary pressure offset in incompressible flow problems, helping stabilize solutions and improve solver convergence.



- New heat-transfer optimization example - m-script tutorial showing how to set up an optimization loop around a thermal simulation (battery cooling use case).

- More exposed/overridable m-file functions - easier to customize solver and preprocessing behavior for scripting workflows. Backwards compatible with older releases.

See https://featool.com/news/2026/07/15/FEATool-Multiphysics-v1p18p1-Toolbox-Update for more information.