Smarter CAD for Turbomachinery Components

Blades, volutes, endwall contouring, ducts etc. – CAESES® gives you a powerful environment to create your simulation-ready and robust CAD models for your turbomachinery applications. CAESES® offers the highest level of customization to take into account all your turbomachinery know-how and experience.

The powerful scripting possibilities of CAESES® allow you to seamlessly integrate these amazing variable models into your existing design process.

No more manual pre-processing for new design candidates – just set it up once and run your studies and optimizations. CAESES® models can be linked to your meshing and CFD software as well as to ready-to-use optimization strategies. If you already use optimization tools in your company, then run CAESES® in batch mode and use it as your smarter geometry engine in a CFD-driven design process.


Variable and robust models for axial turbine blades


Blade Design

For the parametric blade design, CAESES® offers a dedicated add-on which makes it your comprehensive turbomachinery blade design tool. But why choosing CAESES® for turbomachinery blade design? Compared to other blade tools in the market, CAESES® gives you the full control to efficiently fine-tune all details of your initial blade shape by using your own parameters. You are not limited to black box functionality, everything is open and can be customized according to your expertise and wishes.

Flexible and automated shape studies

Flexible and automated shape studies

CAESES® blade models are ready for the fast manual and automated creation of new design candidates. Create single-blade and splitter blade models, and always have full access and customization possibilities such as

  • Any 2D profile parameterization
  • Any meridional contours (imported, parametric)
  • Any leading edge and trailing edge shapes
  • Any camber definitions (based on mapping beta/theta functions)
  • Any thickness distributions
  • Any shape for radii fillets (constant, variable)
Axial fan design with CAESES

Axial fan design with CAESES

If you feel you are limited with other tools in terms of blade shape details or regarding the fully automated & robust blade generation, then you should really give CAESES® a try. CAESES® works for any kind of rotating machinery, no matter if you are designing turbochargers, fans, pumps, axial compressors or turbines.

Integrated blade design for various impeller and blade types

CAESES® also allows you to generate complex models that satisfy the requirements of the CFD and the stress analysis departments. With a robust and variable turbine wheel model, automated studies can consider the aerodynamic performance but also stress characteristics at the same time. Check out the case study about turbine blade optimization including scallops.

Variation of the turbine blade and scallops

Variation of the turbine blade and scallops


There are a couple of online demo models available for blade design. The stator model allows you to change the blade shape and the endwall contouring. The axial fan model is rather simple but also gives you some first idea of the possibilities.


Turbocharger and Pump Volutes

CAESES® is the perfect design tool for volutes of turbochargers and pumps. 100% robustness and the possibility to build-in company-specific design parameters are the main benefits for you as a CAESES® user. Create your own model – or let us help you to create a custom template model that can be used in your CFD department without any CAESES® expertise!

Learn more about volute design …

Volute design in CAESES

Robust volute design for pumps and turbochargers


Endwall Contouring

The idea of endwall contouring is to be able to modify the hub and shroud geometry, e.g. in the leading edge region of the blade, to minimize undesired secondary flow losses. With CAESES® you create your own parametric models for these free-form surfaces. We can also provide existing efficient models that can be readily used for optimization. Check out the blog post “Variable Geometry for Endwall Contouring of Turbines and Compressors” for more information and a short demo video.

endwall contouring

Parametric endwall contouring for compressors and turbines


Example Applications

  • Fans and blowers (axial, radial, mixed flow)
  • Pumps (centrifugal, axial, mixed-flow, multi-stage)
  • Blading for axial compressors and turbines
  • Blading for radial and centrifugal machines
  • Volutes and scrolls
  • Endwall contouring
  • Propellers for ships and aircraft
  • Wind turbines
  • Turbine exit casings
  • Compressor discharge valves

spencer turbineI enjoy using CAESES® as it allows me to parametrically generate geometries without ever going through a CAD design cycle. In this sense it really streamlined my process from concept to CFD verification.

— Ruhou Gao, Turbomachinery Engineer, Spencer Turbine Company


Why CAESES® for Turbomachinery Applications?

twin_scroll_voluteThere are several benefits when you compare CAESES® to conventional CAD-CFD workflows. From our customer feedback the following ones are the most important:

  • Robustness and flexibility of parametric models
  • High level of customization i.e. no black box models and full integration into existing workflows
  • Direct and automated consideration of geometrical/manufacturing constraints in model setups
  • Intelligent reduction of the total number of parameters
  • Powerful fine-tuning possibilities of shape details (e.g. to better control local flow phenomena such as cavitation or swirls)
  • One-time preprocessing for all design variants
  • Everything is geared towards automation, for the purpose of efficient shape optimizations
  • Incredibly fast support from the CAESES® support team


Customer Interview

There is an interview “Creating Lighter and More Efficient Radial Turbines” with Nicolas Lachenmaier, who is the leading aerodynamics & thermal turbine engineer at MTU. Read how the use of CAESES® models massively brought down the overall engineering time from several months to only a few weeks!

interview nicolas lachenmaier mtu radial turbines


More Information

Leading companies such as SIEMENS, Toyota, MTU, KSB, Spencer Turbine and IHI are using CAESES® for the design of turbomachinery components. Here is a SIEMENS case study for the design and optimization of turbine blades. A turbocharger optimization is demonstrated in the research project GAMMA, see “Turbine Blade Optimization including Scallops for a Turbocharger“, and in the case study optimization of volute and vaned diffusor. If you are interested in stator optimization, then check out this blog post about the TU Berlin Turbolab stator. There is also a short article about ANSYS Turbogrid export.

Sounds interesting? Then just drop us a line and we’ll get back to you 🙂




Stator optimization

Parametric model of a stator for efficient and robust aerodynamic shape optimization


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