Geometry Modeling

Geometry Modeling for Variation

CAESES® foundation is a powerful and flexible parametric 3D modeler. It is your perfect choice if you need reliable and efficient geometry models for conducting automated studies with your simulation tools.

Unlike traditional CAD tools, the main focus of CAESES® is the smart design and robust variation of complex flow-exposed surfaces – no matter if you cope with internal or external flows.

Through the dependency-based modeling approach the geometry will never break or fail to regenerate.


Robust, efficient variable geometry for simulation studies

Robust, efficient variable geometry for simulation studies



Examples are turbochargers including volutes, pumps, ship hulls, aircraft wings, arbitrarily shaped ducts, turbomachinery blades, casting components etc. Pretty much anything that needs to be improved in terms of its flow or even structural performance.

Turbine exit casing: How to find the best design?

Turbine exit casing: How to find the best design when having so many possibilities?


Watch this very short CAESES® video which shows how geometry variables are changed to modify the shape. The design variables of a model are listed in a separate editor, and the values are changed through convenient sliders with lower and upper bounds.



Efficient Variable Geometry

CAESES® gives you powerful surface generation tools to create an efficient variable geometry model for optimization purposes. These surface techniques can incorporate all your flow-related ideas so that you can make use of your experience and domain expertise.

Save Simulation Time

With a smarter surface parameterization, you can bring down your total numbers of free variables – which saves you time in terms of computational efforts in simulation-driven optimizations. Typically, a CAESES® user can save a few days up to several months through benefiting from the right parametric model (read this case study).

Create Feasible Geometry

If needed, build constraints into the model to generate only feasible designs. By using the optimization methods through an easy-to-use scripting process, all your specific geometry constraints can be integrated into your model, such as keeping a fixed volume or a sectional area.

Specialized techniques for smooth surface generation and for creating feasible variants – with smarter parameters



You can use CAESES® as your primary CAD tool. Alternatively, use it as an upfront CAD tool in a collaborative and integrated way with traditional design and production CAD (e.g. CATIA, NX, Pro/E, SolidWorks). These traditional tools, although powerful, are detail-oriented and encompass features which may not be relevant for simulation. Often they also cannot be automated to generate geometry in a 100% robust way.

Use a lightweight and flexible geometry model for automated processes in the pre-CAD stage.

Drone blade control by using a user-defined function graph

Drone blade control by using a user-defined function graph


CAD Capabilities

The curve and surface modeling capabilities are based on a powerful object-oriented approach which is handed over to you in a great and intuitive graphical user interface. Even though most users work in this graphical user interface, each design step can be fully scripted and automated. The following CAD capabilities are provided:

  • Parametric 2D sketches and full-blown 3D modeling
  • Innovative surfaces techniques for sweeps with custom parameter distributions
  • NURBS curves and surfaces
  • Intersection and projection curves/points
  • Specialized and fairness optimized curves for intuitive 2D modeling
  • NACA curves
  • Developable surface
  • Boolean Operations for solid objects (union, intersection etc.)
  • Fillet modeling such as constant and variable radius fillets between two surfaces
  • Surface triangulation control with snapping mechanisms for creation of closed STLs
  • Common imports and exports (IGES, Colored STL, STEP, Parasolid, ACIS, DXF, VTK)
  • Specialized and proprietary export formats for meshing and CFD tools (write your own formats in CAESES®)
  • Mapping of 2D sections onto 3D stream surfaces for blade design
  • Section generation for e.g. hydrostatic calculations in ship design
  • Full scripting/automation of geometry-related tasks, incl. batch mode
Parametric volute design for pumps and turbochargers

Parametric and robust volute design for pumps and turbochargers


Made for Many Industries

Flow and structural analysis gets applied in loads of different engineering fields. CAESES® provides generalized methods for the design of complex 3D free-form shapes in any industry. There are add-ons available that extend the functionality by industry-specific tools such as parametric blade and ship hull design.


Check the industry-specific information for more details in your engineering context.

Ship Hull Design

CAESES® provides a specialized set of design capabilities to create and optimize any kinds of ship vessels. See the marine section for more information.

Add-on for ship design

Add-on for ship design

Blade Design

For maritime propeller design, please see the marine section. Information about the parametric design of turbomachinery and pump blades can be found in this section.

Add-on for turbine and compressor design

Add-on for turbine and compressor design




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