|1 Air Flap||9 Turbulence Screens||17 Honeycomb|
|2 Air Flap||10 Nozzle 1,85m x 1,85m||18 Fan 350 kW|
|3 Bypass Flaps||11 Honeycomb||19 Turning Corner|
|4 Blow-In Tower||12 Turntable||20 Diffusor|
|5 Sound Absorber||13 Test Section||21 Sound Absorber|
|6 Heating||14 Windows||22 Blow-Out Tower|
|7 Turning Corner||
15 Floor Panels
|23 Air Flap|
|8 Turning Vanes||16 Flexible Ceiling|
Technical Characteristics of the Atmospheric Wind Tunnel
Electrical heating in the blow-in tower (N = 1,2 MW) to heat the air up to a maximum of 80 °C at a test section velocity of 4.0 m/s. Heating and cooling of the floor panels in the range between 0 °C and 150 °C in order to simulate neutral, robust and instable layered atmospheric boundary layer flows at ground level for Richardson numbers Ri between -0.4 and +0.4 and for geometric scales between 1 to 100 and 1 to 1000.
Open circuit with a closed test section. Flexible test section ceiling with adjustable height in order to arrange for preset pressure gradients (for example: dp/dx = 0) within the test section. Test section of great length (L = 22.0 m) for the natural generation of fully developed boundary layer flows of big height (up to 1.5 m). Cross sectional area of the test section about 4 m². Velocity in the test section adjustable between 2 m/s and 45 m/s.