The main particularity of the ULg wind tunnel is its multi-disciplinarity feature: different types of applications, spanning from aeronautic systems (aircrafts, UAV’s, wind turbines) to wind engineering applications (civil engineering structures, urban flows) can be analysed in the same test facility.

General Arrangement

The ULg wind tunnel features two different test sections and two interchangeable nozzles. Each test section can operate in open or close configuration and is equipped with a rotating test table.

It is located in a dedicated building on the University campus. Half of the tunnel is built in concrete outside the building. The electrical fan is also located outside, in an acoustic absorbing structure. The two test sections are made of steel and located inside the laboratory building with all the measurement equipments.

General view of the wind tunnel facility

General view of the wind tunnel facility



Aeronautic Test Section (TS1)

This test section is used to investigate high-speed (up to 65m/s) and low turbulence (<0.2%) aerodynamic flows. Its dimensions are 2m (width) x 1.5m (height) and the maximum frontal area of models is 0.3m2 to limit the blockage effects. The front and top walls of TS1 are made of perspex panels to allow good visibility and use of flow visualization procedures.

veine d'essai aéro - vue du dessus

Aeronautic test section

Wind Engineering Test Section (TS2)

The Wind Engineering Test Section (TS2) is a large section located down-stream TS1. The dimensions of TS2 are 2.5m (width) x 1.8m (height) x 13.5m (length).


Wind engineering test section

Two types of aerodynamics studies can be carried out in TS2:

  • Low turbulence (<1%) aerodynamic investigations on larger models than Ts1. The maximum frontal area of the model is ~0.5m2. Typical applications are Vertical Axis Wind Turbines, solar panels, street lights.
  • Atmospheric Boundary Layer (ABL) flows investigations for the wind effects on civil engineering structures. For that purpose, TS1 is replaced by a dedicated section covered with wooden blocks that creates the expected scaled atmospheric flow. Typical applications are high/low rise buildings, with a typical geometric scaling between 1/100 and 1/300.





Side views of the Wind Engineering test section

Switch of the test sections

This video shows the switching of TS1 and the wind engineering test section.


The complete technical description of the facility and the available measurement equipments can be downloaded here:


Feel free to contact us if you need more information about it.