文档介绍：Advanced Measurement Techniques for High Reynolds
Number Testing in Cryogenic Wind Tunnels
U. Fey1, R. Konrath2, T. Kirmse 3, T. Ahlefeldt4, J. Kompenhans5
German Aerospace Center (DLR), 37073 Göttingen, Bunsenstrasse 10
Y. Egami6
now: Nagoya University, Nagoya, Aichi-prefecture, 464-8603 JAPAN, Furo-cho, Chikusa-ku
The present paper addresses the development, qualification trials and application of
some non-intrusive measurement techniques suitable for operation in industry-scale,
pressurised cryogenic wind tunnels. The application of cryogenic Temperature-Sensitive
Paint (cryoTSP) as a tool for transition detection is described as well as the implementation
of the Image Pattern Correlation Technique (IPCT) and the Backward Oriented Schlieren
method (BOS) in the European Transonic Windtunnel (ETW). Progress on the development
of cryogenic Pressure-Sensitive Paint (cryoPSP) is shown, and considerations for the
establishment of a Particle Image Velocimetry system suited for low temperatures (cryoPIV)
are presented. Furthermore, the state of adaptation of the microphone array technique
(MAT) to industry-scale, cryogenic wind tunnels is described.
I. Introduction
UTURE generations of aircraft will be developed by applying ‘High Reynolds Number Design’, using advanced
putational aerodynamics and industry-scale cryogenic wind tunn