Ansys Fluent Product Updates

Fluent GPU Solver Expansion

In 2026 R1, the Fluent GPU Solver now supports volume of fluid (VOF) with energy—enabling high-fidelity, transient multi-phase heat transfer simulations at GPU speed across numerous applications, including electronics cooling and thermal management, chemical processing and mixing, oil coolant interactions and many more. Additionally, a battery ROM toolkit, and battery thermal abuse models are now available on the Fluent GPU Solver for exponential battery thermal management simulation speed-ups. Furthermore, the thickened flame model (TFM) is now compatible with chemistry agglomeration (CA) for 2X faster turbulent flame modeling with improved accuracy. And finally, direct post-processing is now available on the Fluent GPU Solver for faster post-processing of GPU-based simulation results.

Usability and Productivity Improvements

The Fluent Web Interface — a new modernized UI/UX available on a web browser — now supports shape optimization (automatically improves a geometry to achieve better fluid performance), the virtual blade model (captures the aerodynamic effect of rotating blades without explicitly meshing every single blade) and porous media (for filtration simulations). The Fluent Web Interface is available at no-cost on any Ansys CFD license type and provides a more sophisticated UI to perform pre-processing, solving, post-processing in a single platform with the ability for users to work on simulations at the same time from anywhere in the world.

Fluent CPU Physics Advancements

Physics accuracy improvements have been made to the Fluent Aero Workspace – a dedicated GUI for Aerospace and Defense engineers that automates external aero simulation workflows. Mesh adaption enhancements in the Fluent Aero Workspace provide improved accuracy for high-speed external aero studies. The virtual blade model (VBM) can now be used with the 'inviscid' viscous model, improving numerical stability and simulation speed. Finally, for battery modeling simulations, battery parameter eXchange (BPX) files—an open standard for reporting material properties used in physics-based Li-ion battery models—is now available from the material database for the Newman's battery model (gold-standard model to simulate lithium-ion battery behavior at the cell level).

Continued GPU Solver Physics Support

The Fluent GPU Solver continues to mature with enhancements to existing models, including volume of fluid (VOF) method compatibility (β) with sliding mesh, non-Newtonian flow, variable density framework, and steady and transient numerics for more accurate multi-phase flow studies. The flamelet generated manifold (FGM) model is now compatible with conjugate heat transfer (CHT) for enhanced combustion studies.Electric potential and joule heating as well as 3D fan conditions are newly available to run on the Fluent GPU Solver for faster solve times for electrochemistry and fan applications. Surface to surface (S2S) radiation simulations are now 2-2.5X faster vs the prior release for heat transfer applications.

Ansys 2025 R2: Release Highlights

Ansys Engineering CoPilot, an AI-based virtual assistant, is now available directly in Fluent Desktop to help streamline simulation set up, browse associated trainings and tutorials, and much more. The Fluent GPU Solver is also now accessible on a web browser via the Fluent Web Interface, enabling real-time monitoring of simulation results at fast speeds. Finally, embedded Ansys optiSLang post-processing is now available in Fluent for parametric studies, tying simulation to design optimization in a single environment.

CPU Physics Enhancements

There are new enhancements to industry-specific models within the Fluent CPU Solver at 2025 R2. For aerospace applications, enhancements have been made to low and high-speed numerics to improve stability and accuracy within the Fluent Aero Workspace. In addition, the ionized data converter used to compute plasma properties can now be sent to HFSS to analyze radio frequencies of interest. The density-based solver (DBNS), two temperature model, and the virtual blade model (VBM) are now exposed in the Fluent Web Interface to perform limited aerospace simulations on a web browser and monitor results in real-time. Finally, for electrochemistry applications, enhancements have been made to the thermal abuse model framework to facilitate more general and flexible implementations and allow for any number of abuse reactions, resulting in more accurate predictions for battery simulations.

UX/UI

Ansys launched the Fluent Web Interface, allowing remote access and real-time changes during calculations. In 2025 R1, the watertight meshing workflow is added for a streamlined UI. Users can receive web server URLs via email and share them with limited permissions. Graphics enhancements improve the post-processing experience.

GPU

New physics supported in the Ansys Fluent GPU Solver in 2025 R1 include:

• The FGM (Flamelet-Generated Manifold) model, which provides accurate and efficient combustion modeling for gas turbines and other combustion applications
• Aeroacoustics, with a hybrid GPU/CPU solution using the FW-H (Ffowcs Williams–Hawkings) model
• Surface to surface radiation modeling, providing an efficient radiation solution for transparent media
• Particle modeling with discrete phase models (DPM), including mass transfer to the gas phase for evaporating particles
• Compressible liquids to model applications such as water hammer
• Volume of fluid (VOF) method for free surface flow modeling (β)

These capabilities allow new use cases to benefit from the massive performance speed-ups enabled by the Fluent GPU Solver, including gas turbine combustion, aeroacoustics, electronics cooling, mixing studies and many more.

Meshing

We've made significant improvements in task performance speed in 2025 R1 for the watertight meshing workflow. For tasks such as importing geometry, updating tables, patterning regions, and more, speed-up factor improvements of 3-350X are observed. Additionally, for cases with a large number of zones, speed-up factor improvements of 3-350X are seen.