Ansys CFX is the industry-leading computational fluid dynamics software for turbomachinery applications. CFX is recognized for its outstanding accuracy, robustness and speed. It is easy to use, yet extremely powerful and accurate for turbomachinery applications including pumps, fans, compressors and gas and hydraulic turbines.

CFX also offers highly scalable, high-performance computing (HPC) to help solve simulations quickly and cost effectively.

New: GEKO Turbulence Model

The GEKO (generalized k-omega) turbulence model is now available in CFX. GEKO is a revolutionary concept in turbulence modeling that gives you the flexibility to tailor the model to your applications. Developed by turbulence expert Dr. Florian Menter, GEKO provides four tunable coefficients — separation, near wall, mixing and jet — which can be adjusted to different flow regimes.

Generate Performance Maps with CFX

The performance map is the result of your analysis. Now CFX allows you to create complete operating maps with a simple integrated process. Using a single performance map format file, CFX generates all necessary results as if they were a single simulation run. It then organizes them into a master folder for unified analysis.

Reliably Capture Cavitation without Empirical Parameters or Tuning

New: GPU-Accelerated Animations for Transient Blade Row Results

No need to wait for transient files to load or animation encoding. Transient blade row (TBR) results can now be post-processed live in Ansys CFD-Post using GPU-accelerated animations. This works for all of the following:

  • Single row blade flutter and inlet disturbance cases
  • Single disturbance harmonic analysis solutions
  • Single-stage TBR cases using Fourier Transformation or Time Transformation pitch change

Pressure variations for Rotor 67 blade flutter showing real-time post-processing and animation using GPU acceleration.


ANSYS CFX software is a high-performance, general-purpose fluid dynamics program that engineers have applied to solve wide-ranging fluid flow problems for over 20 years. At the heart of CFX is its advanced solver technology, the key to achieving reliable and accurate solutions quickly and robustly. The modern, highly parallelized solver is the foundation for an abundant choice of physical models that capture virtually any type of phenomena related to fluid flow. The solver and models are wrapped in a modern, intuitive, and flexible GUI and user environment, with extensive capabilities for customization and automation using session files, scripting and a powerful expression language.

ANSYS CFX is sold as part of the comprehensive software bundles, ANSYS CFD Premium or ANSYS CFD Enterprise. Find out what's in the bundles.

See how our customers are using our software:

High Efficiency via High Technology

High Efficiency via High Technology

As power plants have become more complex, energy efficient and renewable, the challenges to ensure reliable operation have increased. With more than 20,000 steam turbines installed worldwide, Siemens has long relied on ANSYS simulation solutions to predict how their products will perform under today’s diverse, demanding conditions. In this article, Leif Paulukuhn, head of Global Steam Turbine Technology at Siemens, explains the critical role of simulation and other advanced engineering technologies in their design efforts.

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Nebia Uses Simulation to Make a Luxury Shower Head Go Green.

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