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 CFD.

From the start, the 3D modeling capabilities were developed for efficient and robust variation of complex geometries.

Variable turbo inlet duct (click for more information)

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. “Smart” means with fewer shape variables and with a more flow-centric control. Examples are turbochargers including volutes, pumps, ship hulls, aircraft wings, arbitrarily shaped ducts, and turbomachinery blades. The following video gives you an idea about how to change variables of geometry models:



Efficient Variable Geometry

CAESES® gives you powerful surface generation tools to create an efficient variable geometry model for an optimization. These surface techniques can incorporate all your flow-related ideas and you can make use of your experience and domain expertise. Constraints can also be considered or even automatically fulfilled in your model, to create only feasible designs. With a smarter surface parameterization, you can bring down your total numbers of free variables – which, as a consequence, saves you days and weeks in terms of computational efforts in simulation-based optimizations.

Specialized techniques for surface generation and for creating variants – with fewer, smarter parameters



Many of our customers use CAESES® as their primary CAD tool, whereas others use it as an upfront CAD tool in a collaborative and integrated way with their 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. In addition, the parametric controls are often not efficient and flow-related, and the models don’t react robustly to automated variations. This is exactly where CAESES® comes into play. You as a CFD engineer can explore all of your ideas with a geometry model that is ready for CFD and that gives you the controls you need.

Drone blade control by using a user-defined function graph

Drone blade control by using a user-defined function graph


Made for Many Industries

Flow analysis gets applied in many different engineering fields. CAESES® provides generalized methods for the design of complex 3D free-form shapes in any industry. There are also 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.

add-ons for blade and ship design

Add-ons for parametric blade and ship design


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:

  • Innovative surfaces techniques for sweeps with custom parameter distributions
  • Common NURBS curves and surfaces
  • Intersection and projection curves/points
  • Smooth and fairness optimized curves
  • NACA curves
  • Developable surface
  • Boolean Operations for solid objects
  • Fillet modeling, e.g. constant radius fillet between two surfaces
  • Trimmed surfaces
  • Surface triangulation control with snapping mechanisms for robust creation of closed volumes
  • Common imports and exports (IGES, Colored STL, STEP, Parasolid, ACIS, DXF, VTK)
  • Specialized and proprietary export formats for meshing and CFD tools
  • Mapping of 2D sections onto 3D stream surfaces (blade design)
  • Section generation for e.g. hydrostatic calculations in ship design
Parametric volute design for pumps and turbochargers

Parametric volute design for pumps and turbochargers




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