航空宇宙技術研究所0.2m超音速風洞静粛化に向けた取り組み STATUS OF IMPROVING NAL 0.2M SUPERSONIC WIND TUNNEL FOR QUIET FLOW
Some features of the 0.2m supersonic wind tunnel at National Aerospace Laboratory relating to the quiet flow establishment are described. Pressure fluctuations were measured along the tunnel circuit. The pressure fluctuation ratio at the settling chamber exit satisfies a goal of the value less than 0.2 % for the quiet wind tunnel. However, the measured velocity fluctuation ratio does not satisfy another goal of the value less than 1 %. Measured Pitot pressure fluctuation ratio at the test section does not satisfy a goal of the value less than 0.1 % for the quiet flow although the value is near the goal.
- JWE : 日本風工学研究会誌
JWE : 日本風工学研究会誌 78, 69-72, 1999-01-31
Japan Association for Wind Engineering