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.