Aerodynamic investigation with focusing schlieren in a cryogenic wind tunnel

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机构：
[1] Gartenberg, Ehud
[2] Weinstein, Leonard M.
[3] Lee, Edwin E.
来源：
Gartenberg, Ehud | 1600年 / 32期
关键词：
Aerodynamics - Cryogenic equipment - Flow visualization - Wind tunnels;
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摘要：
A flow visualization study was performed using a focusing schlieren system in the 0.3 m Transonic Cryogenic Tunnel at NASA Langley Research Center. The system proved to be a useful flow visualization tool for flows as low as M = 0.4. This study marked the first verification of the focusing schlieren technique in a major subsonic/transonic wind tunnel and the first time that high-quality, detailed pictures of high-Reynolds-number flows were obtained in a cryogenic wind tunnel.
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