We4Ce, the Rotor Blade Designer

Annual Yield Improvement

By taking over the company FlowChange early 2020, We4Ce got entrance to the ABIBA project.
The ABIBA project is a 3 years Dutch funding project carried out together with partners 2-B Energy as turbine manufacturer and University of Delft as research institute.
The goal of the project is the development and demonstration of blade add-on technology such as vortex generators to increase the performance of wind turbines.
Know-how is created on the behaviour of the flow around a wind turbine blade and the design, manufacturing and bonding of Vortex Generators (VG) on the rotor blade to improve the airflow.
So called flow tuft visualization is used on site to localize the flow separation areas on the blade before and after the installation of Vortex Generators.
The flow tuft visualization results are correlated with in-house developed engineering models.

Furthermore, We4Ce derived a new family of airfoils focusing on the large onshore and the offshore market.
A family of airfoils is derived with analytical tools and wind tunnel tests on 32 different geometries for tip and root part of the blade!
The use of 3 different Vortex Generator designs and several trailing edge Serration designs are included in the wind tunnel measurements.

Based on wind tunnel test, the following services can be offered:

  • Aerodynamic design, including our new airfoil family from 14.5% relative thickness (tip) up to 55% relative thickness (root)
  • Customized airfoil design, including validation in the wind tunnel
  • Energy yield improvement scheme with the hardware supply of the Vortex Generators
  • Noise reduction scheme with the hardware supply of the trailing edge Serrations

This knowledge can be used to optimise existing rotor blades, but can also be integrated in the design of new rotor blades.

Feel free to contact us for more information.


Wind tunnel testing 25% t/c airfoil with the We4Ce add-on technology: 5-10dB(A) noise reduction.



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