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Tests in wind tunnel

Characteristics:

  • closed circuit, closed working section, single return,
  • contraction ratio: 16.0,
  • main dimensions:lenght 11m, height 7m, width 3m,
  • jet shape: octagonal,
  • energy ratio: 2.4,
  • moving walls for zero pressure gradients.

 

The drive motor:

  • 56kW, DC, continuously controlled,
  • two-stage fan, 1m diamemter.

Sections:

1. Low speed section:

  • 2.5mx2.4mx1.8m,
  • cross section: 4m2,
  • pmaximum wind speed: 6m/s.
  • suitable for yachts tests, chimney tests and so on.

2. High speed section:

  • 1.5m x 0.6m x 0.48m,
  • cross section: 0.25m2,
  • maximum wind speed: 100m/s,
  • low turbulence level: Tu<0.1%.

Suitable for:

  • flat plate flow heat transfer investigations,
  • boundary layer investigations,
  • laminar-turbulent transition investigations,
  • wake-boundary layer interaction investigations,
  • unsteady flow measurements,
  • flow visualization,
  • pressure and velocity measurements on and over the flow-confininf surfaces,
  • forces on tall structures and bridges,
  • aerodynamic noise measurements,
  • drag measurements.

Data acquisition and monitoring facilities:

  • Computer IBM PC 486 compatible,
  • IEEE 488 card, INES, Germany,
  • AD converter BurrBrown, USA,
  • disk data storage,
  • pressure transducers, 6 channels, Kulite, USA,
  • Scanivalve for steady preassure measurements, 48 points, USA,
  • hot-wire velocity measurements facilities, 3 channels, DANTEC, Denmark,
  • transient recorder, 6 channels, Maurer, Switzerland,
  • multimeter with IEEE 488, PREMA, Germany,
  • plotting and printing facilities.
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