Ansys Fluent

Ansys Fluent - Enterprise Fluid Simulation Software

Ansys Fluent is general-purpose CFD software for problems where flow, heat or chemistry determine whether a design performs. Will a heat sink hold a chip below its limit? Will a burner meet its emissions target? Will a tank mix in time? Fluent answers these questions in simulation, before anything is built.

Turbulence, heat transfer, multiphase and reacting flow are handled in a single solver and a single-window workflow. Fluent is licensed through the Ansys CFD plans, and the right plan depends on your physics and model sizes, which is where we begin every engagement.

Ansys Fluent 2026 R1

• Fluent GPU solver: volume of fluid (VOF) with energy and sliding mesh now run on GPU, for faster multiphase simulations such as mixing and rotating machinery.
• Combustion on GPU: chemistry acceleration delivers up to 2-3x faster solves for stiff reaction mechanisms.
• Hybrid precision: lower GPU memory use at the same accuracy, so larger simulations fit on fewer GPUs.

Read more: What's New Across Ansys Fluids in 2026 R1

Ansys CFD Enterprise

Fluent with its native multi-GPU solver, alongside every other Ansys fluids solver.

The plan for teams that need the full range of fluids solvers and specialist tools under one licence.

Ansys CFD Premium

Fluent's full physics range on CPUs, together with Ansys CFX.

Suited to experienced CFD engineers who need validated results across turbulence, heat transfer, multiphase and reacting flow.

Ansys CFD Pro

Fluent for everyday flow and heat transfer problems, at a lower entry cost.

Fluent Applications: Cooling, Process, Combustion and Batteries

• Electronics and e-motor cooling: airflow and conjugate heat transfer through enclosures, heat sinks and motors cooled by air, water or spray.
• Process equipment: stirred tanks, mixers, separators and sprays.
• Combustion and emissions: burners, furnaces and reacting flows, using validated combustion models.
• Aerodynamics and HVAC: vehicles, fans, ducts and building ventilation.
• Batteries: electrochemistry and thermal management, with reduced-order models for system studies.

Multiphase Physics, GEKO Turbulence and Task-Based Meshing

Few industrial problems involve a single fluid phase. Fluent models gas-liquid, liquid-liquid and gas-solid flows, boiling and condensation, free surfaces with volume of fluid (VOF), and heat moving through solids and fluids together. The GEKO turbulence model has tunable coefficients, so it can be calibrated to a given class of flow.

Task-based meshing workflows take both clean and imperfect CAD to a solver-ready mesh, and meshing and solving both run in parallel. For fluid-structure interaction, Fluent works alongside Ansys Mechanical.

Fluent Native Multi-GPU Solver

Fluent's native multi-GPU solver runs cases on graphics cards rather than CPU cores, and on large meshes it can reduce an overnight run to a same-day result. Not every model benefits equally, so we recommend benchmarking representative cases before investing in hardware.

Common CFD Consultation Topics

• Cleanroom airflow: air change rates, airflow direction, pressure differentials and particle concentration against the cleanroom class.
• Data centre and server room cooling: rack inlet temperatures, hot spots and cooling capacity.
• HVAC and building ventilation: air distribution, thermal comfort and fresh-air effectiveness.
• Electronics enclosure cooling: fan, vent and heat sink layout against component temperature limits.
• Pumps, fans and mixing vessels: flow rate, pressure drop and mixing performance.

Have a project outside this list? Send us the specification. Where a study needs specialist knowledge, we draw on our wider Ansys partner network.

Related Products

• Ansys CFD: the licence plans (Pro, Premium, Enterprise) through which Fluent is supplied.
• Ansys CFX: a separate CFD solver specialised for turbomachinery; included in CFD Premium and Enterprise.
• Ansys Icepak: electronics cooling in Ansys Electronics Desktop, built on the Fluent solver.
• Ansys Rocky: discrete element (DEM) particle simulation that couples with Fluent.
• Ansys HPC Packs: additional cores and GPUs for faster solves on any plan.

Ansys Fluent FAQ

Do I need a GPU to run Ansys Fluent?

No. Fluent runs on standard CPUs. The GPU solver is an option for supported models where run time is critical.

Can we evaluate Fluent before buying?

Yes. Ansys offers a free 30-day Fluent trial, and our CFD team can help set up a first model during the evaluation.

Related CADIT Training

• CFD 101 - Ansys CFD Introduction Training
• CFD 201 - Ansys Multiphysics CFD Fluid-Structure Interaction (FSI) Training
• CFD 202 - Ansys Multiphysics CFD Conjugate Heat Transfer Training
• CFD 203 - Ansys Fluent CFD Multiphase Training
• CFD 204 - Ansys Fluent CFD Heat Transfer Training
• CFD 205 - Ansys Fluent CFD Rotating Machinery Training
• CFD 206 - Ansys Fluent CFD Dynamic Mesh Modelling Training
• CFD 207 - Ansys Fluent CFD Turbulence Training
• CFD 208 - Ansys Fluent CFD Species Transport & Combustion Training

Oct ’26 update by the CADIT Ansys CFD Team.