Boundary Layer Wind Tunnel
The Boundary Layer Wind Tunnel (BLWT) is an open-circuit wind tunnel approximately 30m in length. It is used primarily for boundary layer, architectural, and wind-engineering studies, as well as fundamental work. In the past the BLWT has been used to model the aerodynamics of sports equipment, forest clearcutting patterns, marine propellers, submarines, and local Vancouver landmarks BC Place and The Provincial Law Courts.
Tunnel specifications:
- Test Section: 1.6m high by 2.5m wide, 23.6m long
- Speed Range: 3m/s- 20m/s
Parkinson Wind Tunnel
The Parkinson Wind Tunnel is a closed-circuit wind tunnel approximately 13m in length and is used primarily for aeronautical research and fundamental studies of flow-induced oscillations as well as studies of wind tunnel blockage effects.
Tunnel specifications:
- Test Section: 0.7m high by 1.0m wide, 2.6m long
- Speed Range: 5 m/s to 35 m/s
Flow Visualizations
Helium bubble and yarn tuft visualizations are the most common techniques used at our facilities. For helium bubble visualizations, our facilities operate a Model 5 Sage Action Inc. Helium Bubble Generator. Upon request, our facilities are also capable of smoke and surface oil visualizations.
Force Balance
A specially designed two-axis, air-bearing force balance is mounted below each wind tunnel and measures side and drag forces. Data acquisition is performed using a 16 channel IOtech board.
Specifications:
- Maximum measurable side load: 250N in the presence of 2200N vertical load
- Maximum measurable drag load: 250N in the presence of 2200N vertical load
- Accuracy: better then 0.3% full scale, independent of vertical load
A technical paper describing the force balance is located here.
