Transonic Cascade Wind Tunnel

RI-044
Wind Tunnel
Infrastructure
DLR
Description

Transonic Cascade Wind Tunnel

Main technical characteristics

Reynolds number 3.000.000
Mach number or maximum velocity 0,2 – 1,4 (inlet Mach number 0,2 – 1,4; transonic test section Mach number = 0,9 – 1,4)
Maximum mass flow ?
Maximum temperature/ pressure 0,1 – 1,4 bar / 23 – 47 °C (300 – 325 K)
Duct diameter/ test section dimensions (diameter or height/ width) heigt = 150 – 300 mm (= test section height; blade height: 168 mm; inflow angle: 80 – 160 deg.)
Measurement instruments pressure measurement (steady and unstedy);
flow visualization by oil streak pattern;
shock visualization by Schlieren pictures;
transition visualization by liquid crystal (LC);
laser 2 foci technique;
PIV and high speed PIV
Maximum rotating speed

Contact Information
Dr.-Ing. Eberhard Nicke German Aerosp...
Cologne (Germany)
EREA

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