Reference project WT277

University of Applied Sciences Hamm-Lippstadt

For the University of Applied Sciences (Contact: Heinrich Teichrieb, Prof. Dr. Kiuntke) the Windtunnel WT277 was built. The wind tunnel is characterized by a high contraction, the non-expanding corners as well as the long diffuser and the low degree of turbulence.


  • High contraction of 11
  • Non-expanding corners
  • Long diffuser
  • Very good turbulence level
  • Very good price-performance ratio

Product description

Basic structure
The WT277 consists of a steel profile welded construction and galvanized sheet metal. The additional painting gives the wind tunnel an attractive appearance and is also protected against corrosion. Large manholes in all relevant segments make it easy to enter the inside of the wind tunnel.

The WT277 is driven by a vibration-decoupled axial fan. The fan, which is mounted on spring shock absorbers, is connected to the wind tunnel via canvas flanges. This ensures low-noise plant operation. The Nanzelle and the guiding vanes are matched to the fan in order to generate a flow with reduced swirl.

Flow preparation
The long diffusers, whose narrow opening angle counteracts flow separation, open into non-expanding corners. The wind tunnel has an extra large sieve chamber. This contains four sieves at an optimal distance from one another. These non-split stainless steel sieves are accessible via manholes for easy cleaning. A honeycomb straightener with a length-to-diameter ratio of 8: 1 further reduces the swirl of the flow. In a nozzle, the nozzle geometry of which corresponds to a polynomial of the fifth order, the flow is prepared and any turbulence that may be present is suppressed.

The measurement in the wind tunnel can be carried out with an open as well as with a closed test section. An ergonomic conversion of the test section is possible via a flange connection to the nozzle. Both open and closed test sections can be equipped with a wind tunnel scale if required. The open test section has a flow collecting funnel to reduce the flow losses during the measurement. The inside of the closed test section can be seen through glass windows. The recording of flow characteristics using optical measurement methods, e.g. PIV (Particle Image Velocimetry) or LDA (Laser Doppler Anemometry) is possible without any problems.

The wind tunnel is controlled intuitively and safely via a touch display. After specifying the target wind speed, the wind speed, speed or dynamic pressure is regulated.


Closed test section

Design type Closed loop, standing
Measuring cross section 600 x 600 mm
Measuring length 1500 mm
Top speed 60 m/s
Turbulence level 0,4 %

Datasheet WT277 with closed testsection

Closed testsection

Design type Closed loop, standing
Measuring cross section 600 x 600 mm
Measuring length 900
Top speed 50 m/s
Turbulence level 0,8 %

Datasheet WT277 with open testsection

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