Facilities

If you would like to use any of the EnFlo or other laboratory facilities, please contact Alan Robins.

Wind tunnels

Below are the specifications for the wind tunnels at the EnFlo laboratory.

Tunnel A
  • Open circuit, blow down
  • Working section: 0.9 x 0.6 x 5 m (width x height x length)
  • Maximum wind speed: 30 m/s
  • Free Stream Turbulence Intensity: < 0.1%
Tunnel B
  • Open circuit, blow down
  • Working section: 1.5 x 0.5 x 2 m (width x height x length)
  • Maximum wind speed: 15 m/s
  • Free Stream Turbulence Intensity: < 0.25%
Tunnel C
  • Open circuit, blow down
  • Working section: 0.3 x 0.3 x 3 m (width x height x length)
Tunnel D
  • Open circuit, blow down
  • Working section: 0.6 x 0.3 x 2 m (width x height x length)
  • Maximum wind speed: 20 m/s
Tunnel E
  • Closed circuit
  • Working section: 1.1 x 1.4 x 9 m (width x height x length)
  • Maximum wind speed: 40 m/s

Meteorological Wind Tunnel

The EnFlo meteorological wind tunnel features comprehensive inlet flow and surface heating and cooling systems for generation of neutral, stable and unstable boundary layers and neutral and stable free flows.

Other key features include two three dimensional, computer controlled traversing gears, tracer supply systems, calibration facilities, a turntable and extensive condition monitoring. The tunnel and all associated capabilities operate under full computer control, enabling prolonged unmanned operation.

Specifications
  • Thermally stratified
  • Twin fans, suck through
Dimensions
  • Working section: 20L x 3.5W x 1.5H m
  • Overall length: 27.2 m
Air speed range
  • 0.3 to 3.0 m/s
Inlet heater
  • Number of layers: 15 at 0.1 m spacing
  • Maximum heating rate: 400 kW
  • Maximum temperature gradient: 80 °C/m
  • Maximum bulk temperature rise: 80 °C
Roof/floor panel performance
  • Maximum heating rate: 2 kW/sq. m
  • Maximum surface temperature: 120 °C
  • Maximum cooling rate: 1 kW/sq. m
  • Minimum surface temperature: 5 °C
Side panel performance
  • Number of heating zones: 3 at 0.5 m
  • Maximum heating rate: 0.2 kW/sq m

Towing Tank

The towing tank is designed for the study of flow phenomenon in which local buoyancy effects are important, such as plume dispersion, downburst modelling etc. Where required, cross-flow is simulated by towing experiments through the tank and a large carriage is installed for carrying equipment in such circumstances.

Specifications

  • Length 12 m
  • Width 1.25 m
  • Depth 1 m (maximum)
  • Carriage 1.5 x 1.5 m
  • Towing speed 0.03 to 0.3 m/s.
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University of Surrey
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Surrey
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