Applied Aerodynamics

L2 Site Wind Tunnel

Balance de paroi: mesure de 6 composantes aérodynamiques
Model of the L2 Site Wind-Tunnel

Aerodynamic characteristics

Installed power: 135 kW

Velocity: 0 to 19 m/s

Standard test section: L = 9 m, l = 6 m, H = 2.5 m

Motor-driven 6-meter turntable

Setup Types

This wind tunnel is especially well suited to testing complete industrial or urban sites. A grid can be introduced to simulate the atmospheric boundary layer over the site, by deforming the vertical velocity gradient.

The models are oriented in the wind rose by a turntable, 6 m in diameter.

A wall balance measures the six aerodynamic components simultaneously.

The probes are positioned by a computer-controlled three-axis "XYZ" displacement system, with position measurement.

"XYZ" probe displacement system Aerodynamic characteristics

Test Types

Measurements of Forces and Moments, Pressures, Velocities, Temperatures

Flow Visualizations

Instrumentation

The L2 wind-tunnel is used with :

a VXI frame that includes

an integrated extensometry system
an acquisition card with analogic channel, and thermocouple
a relay card
a 8-channel DSP card
a fonction generation card

a PSI 8400 pressure acquisition chain (256-channel)

a 4-channel CO₂ analyser

a 6-channel hot wire conditionning chain

a 5W yag laser for tomoscopy visualisation

PIV measurement capability