What is Fluent?
Ansys Fluent is an industry-leading computational fluid dynamics (CFD) software that simulates fluid flow phenomena using advanced numerics.
Ansys Fluent – Fluid Simulation Software
Engineering the Future with Precision and Power
The world’s most advanced Computational Fluid Dynamics (CFD) software, designed to help engineers solve their most challenging fluid dynamics problems at gold-standard accuracy.
Why Choose Fluent?
Ansys Fluent provides exceptional accuracy, integrates seamlessly with other Ansys physics solvers, and speeds up solve times using a GPU-native solver, enabling engineers, researchers, and business leaders to overcome complex fluid flow challenges.
Speed and performance
Leverage Fluent’s multi-GPU solver and high-performance computing integrations to run massively more complex simulations faster than ever before.
Unrivaled accuracy
Achieve precise results with industry-leading physics models that are rigorously validated against experimental data.
Automation and training
Streamline workflows with automation and boost your skills through comprehensive training support and resources.
Trusted by innovators in nearly every industry
See how Fluent solves industry challenges
“Using wind tunnels on GT cars are extremely expensive, which is why a partner like Ansys is so important to Ferrari. Being able to extract the maximum out of our aerodynamic ability through CFD is vital to keep our performance on track. ”
“With NVIDIA DGX and Ansys Fluent software, we are able to reduce the runtimes of our internal drive flow models from hours to minutes, approximately a 50 times improvement. ”
“Our ability to harness the power of Ansys Fluent native multi-GPU solver has saved us considerable time while using a fraction of the typical hardware resources. ”
Applications & Use Cases
Built for Real-World Complexity
From battery cooling to hypersonic flight, Ansys Fluent empowers engineers to tackle industry-specific challenges with confidence—combining advanced physics, proven accuracy, and scalable performance to solve what matters most.
Fluent capabilities
Engineered for Both Speed and Accuracy
Fluent offers a comprehensive suite of features, from advanced physics models to built-in optimization to multi-physics integrations, and empowers users at every stage of their CFD journey.
Advanced physics
Access the broadest range of advanced physics models available, including turbulent and laminar, reactive, multi-phase flows and more.Built-in optimization & customization
Access built-in optimization tools, such as shape optimization, one-click optimization, customization with PyFluent and user-defined functions (UDFs).Multi-physics integrations
Leverage the broader Ansys portfolio with multiphysics integrations with Ansys Mechanical, Icepak, Motion, and more.
Learn from Ansys
Dive into Fluent resources
Master Ansys Fluent with a curated collection of resources designed to boost your CFD expertise. From in-depth tutorials and whitepapers to hands-on training modules and real-world case studies, our resource center has everything you need to unlock Fluent’s full potential and elevate your simulation skills.
See what's new
Fluent’s latest features and updates
Ansys Fluent has two software releases each year. Discover new features, including pre-processing, solving and post-processing enhancements, designed to transform your simulation speed, accuracy and usability.
Frequently asked questions
Find quick answers and practical guidance in our Fluent FAQs, designed to help you troubleshoot, optimize workflows and get the most out of your simulations.
Ansys Fluent is a general-purpose computational fluid dynamics (CFD) software used to model fluid flow, heat and mass transfer, chemical reactions, and more. Fluent offers a modern, user-friendly interface that streamlines the CFD process from pre- to post-processing within a single window workflow. Fluent is known for its advanced physics modeling capabilities, which include turbulence modeling, single and multiphase flows, combustion, battery modeling, fluid-structure interaction, and much more.
Also known for its efficient HPC scaling, large models can easily be solved in Fluent on multiple processors on either CPU or GPU. Multiple solver options are available, including pressure-based and density-based CPU solvers to cover low-speed to hypersonic flows and a pressure-based native GPU solver.
To install Ansys Fluent, follow the steps below:
- Download the Fluids package from the Download Center in the Ansys Customer Center.
- Open the Ansys Installation Launcher and select Install Ansys Products.
Read and accept the clickwrap to continue. - Click the right arrow button to accept the default values throughout the installation.
- Paste your hostname in the Hostname box on the Enter License Server Specification step and click Next.
- When selecting the products to install, check the Fluid Dynamics box and Ansys Geometry Interface box.
- Continue to click Next until the products are installed, and finally, click Exit to close the installer.
If you need more help downloading the License Manager or other Ansys products, view this video from the Ansys How To Videos YouTube channel.
Installing Ansys License Manager on Windows
You can export data after a Fluent calculation by selecting File - Export - Solution Data. Fluent allows users to export data to Mechanical APDL input, ASCII, ACS, CDAT, CGNS, CFF, EnSight Case Gold, and many other formats. To export data during a transient calculation, you will have to set up the case file so that the solution and particle history data are exported as the calculation progresses. This can be done by creating an automatic export definition using the Calculations Activities Task Page. Click the Create button under Automatic Export and select Solution Data Export, then select the file type, cell zones, surfaces, and quantities you would like to export.
Current customers can download Ansys Fluent from the Download Center in the Ansys Customer Portal. For those who are not current customers but are interested in trying Fluent, Ansys offers a free 30-day trial of Fluent. If you are a student, you can download our free student software and use it along with our free courses, support community, and a wealth of student-focused tutorials.
Ansys offers a variety of options for users of all skill levels to learn how to use Ansys Fluent. If you are interested in enhancing your simulation and general physics knowledge of fluids, Ansys offers Ansys Innovation Courses, which are free courses that will teach you the underlying physics in a problem and how Fluent is used to help solve this problem.
For introductory product-specific step-by-step tutorials, new feature videos, and general tips & tricks, we have the Ansys How-to Videos on YouTube.
Finally, the Ansys Learning Hub provides customers with all the training resources needed to learn Ansys Fluent from the ground up. The Learning Hub has self-paced video courses, CAD models, best practice guides, demo videos, and learning rooms for questions and discussions to learn from the Ansys experts.
Ansys Fluent has two guided workflows to mesh a CAD model, the watertight geometry workflow and the fault-tolerant meshing workflow. Both workflows accelerate meshing by organizing the process into a user-friendly, task-based workflow that offers relevant choices and options but also has the flexibility to be customized. The watertight geometry workflow is for watertight CAD geometries that do not require much clean-up and modifications. The fault-tolerant meshing workflow is for more complicated non-water-tight CAD geometries that may require some clean-up and modifications (defects such as overlaps, intersections, holes, duplicates, etc.).
Learn more in this free course from Ansys Innovation Space.
Ansys Fluent is primarily used for computational fluid dynamics (CFD) simulations to analyze, design, and optimize products and processes involving fluid flow, heat transfer, chemical reactions, and related phenomena. It models complex physical phenomena in real-world geometries to help engineers understand, predict, and improve the performance and efficiency of devices in various industries, such as aerospace, automotive, and energy.
Ansys Fluent
Ready to Simulate Without Limits?
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