Precise Simulation is proud to be able to announce the release of FEATool Multiphysics™ version 1.18.1, featuring improved user-interface and graphics performance, new CFD boundary-condition and pressure-normalization options, greater flexibility for advanced customization, and a new heat-transfer optimization example.

Improved UI and Graphics Performance
Version 1.18.1 introduces several improvements to the user interface and graphics rendering. These updates provide a smoother and more responsive experience when setting up models, visualizing results, and working with larger or more complex simulations.
New Computational Fluid Dynamics (CFD) Features
Mean Pressure Outflow Boundary Conditions for CFD
The CFD physics modes now support mean pressure outflow boundary conditions. This option provides additional control over outlet behavior and is particularly useful for flow models where the average pressure at an outlet must be prescribed while allowing the local pressure distribution to adjust naturally.
Rather than fixing pressure pointwise at an outflow boundary, this option enforces the average pressure over the boundary, which can improve numerical stability and give more physically realistic results for many internal and external flow problems where the pressure field isn’t uniform across the outlet.
Pressure Normalization for CFD Physics Modes
New automatic pressure-normalization functionality has also been added for CFD simulations. Pressure normalization can help remove the arbitrary pressure offset that arises in incompressible-flow problems and improve numerical handling of computed pressure fields.
This helps to effectively stabilize the solution by pinning down the pressure level, avoiding the classic “floating pressure” issue in incompressible flow simulations, and therefore increases stability and convergence of flow solvers.
New Heat-Transfer Optimization Example
Version 1.18.1 also includes a new m-script heat-transfer design and optimization example.

The example demonstrates how to formulate and solve a heat-transfer battery optimization problem using a MATLAB m-script workflow by setting up an optimization loop around a thermal simulation, making it a useful starting template for anyone looking to couple FEATool Multiphysics simulations with design optimization tasks.
Exposed and Overridable M-File Functions
For users working on the MATLAB command line and m-file scripting, a wider range of internal FEATool m-file functions are now exposed and can be directly overridden by users (following the same API). This makes it easier to customize workflows, modify selected solver or preprocessing behavior, and integrate project-specific functionality without changing the core FEATool Multiphysics installation.
The update gives advanced users and developers greater control while preserving compatibility with standard FEATool workflows and is backwards compatible with older releases.
Upgrade to FEATool Multiphysics 1.18.1
FEATool Multiphysics™ 1.18.1 and CFDTool™ 1.11.1 is a focused update that improves everyday usability while expanding the CFD, customization, and optimization capabilities of the platform. The new release also fixes and improves many smaller bugs found in earlier versions. Users are therefore encouraged to upgrade to the latest version and explore the new features and example scripts.
The updated toolboxes are available right now both as stand-alone
desktop apps, and also as MATLAB toolbox
Add-Ons, with fully interactive GUI and cross-platform support for the
Microsoft Windows, Linux, and MacOS operating
systems. The toolboxes can be downloaded directly from
www.featool.com/download (or installed directly with one-click from
the MATLAB Add-Ons Toolbar).
If you use FEATool Multiphysics and find it useful in your work or studies please do share your models, modeling experience, and consider recommending the toolboxes to your colleagues and coworkers.
About Precise Simulation
Precise Simulation Limited, founded in 2012, is a boutique software development studio dedicated to developing easy-to-use and state-of-the-art simulation software tools for product design, virtual prototyping, and research in both industry and academia.
The FEATool Multiphysics™ and CFDTool™ toolboxes are fully integrated simulation software platforms for creating virtual 3D models and simulation applications based on physical phenomena. A unique feature is the ability to account for coupled physics phenomena, and seamlessly integrate with many types of multi-physics solvers such as OpenFOAM, FEniCS, SU2 Code, and more.
FEATool Multiphysics is a complete simulation platform for fluid flow, heat transfer, structural, electromagnetics acoustics, and chemical engineering applications. Built-in interfaces and APIs enable the integration of FEATool with MATLAB, physics solvers, Computer Aided Design (CAD), and Computer Aided Engineering (CAE) tools. Simulation experts rely on FEATool Multiphysics to design and develop physics based models and deliver accurate and speedy results to their teams, manufacturing departments, test laboratories, and users worldwide.