A transition detection study using a cryogenic hot film system in the Langley 0.3-meter transonic cryogenic tunnel
A transition detection study using a cryogenic hot film system in the Langley 0.3-meter transonic cryogenic tunnel
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在兰利 0.3 米跨音速低温隧道中使用低温热膜系统进行转变探测研究
DOI：
10.2514/6.1987-49
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
M. Fancher
中科院分区：
文献类型：
--
作者：
C. B. Johnson;D. Carraway;P. Stainback;M. Fancher
在兰利0.3米跨音速低温风洞（0.3 m TCT）中，使用专为低温风洞设计的专用热膜系统进行了过渡探测研究。在近低温条件下获得的定量过渡位置数据，360°R （200K）代表了在低温风洞中获得的第一个明确的过渡雷诺数。该模型在绝热和非绝热壁面条件下进行了测试，壁温与总温比低至0.47。测试结果表明，改进的热膜安装技术和改进的数据采集系统将允许在线确定低温风洞中边界层过渡的位置，例如美国国家跨音速设施。
A transition detection study was conducted in the Langley 0.3-Meter Transonic Cryogenic Tunnel (0.3-m TCT) using a specialized hot film system designed specifically for use in cryogenic wind tunnels. The quantitative transition location data obtained at near cryogenic conditions, 360 deg R (200K) represents the first definitive transition Reynolds numbers obtained in a cryogenic wind tunnel. The model was tested at both adiabatic and nonadiabatic wall conditions with a wall-to-total temperature ratio as low as 0.47. The test results indicated an improved technique for hot-film installation and a modified data acquisition system would allow the on-line determination of the location of boundary layer transition in cryogenic wind tunnels, such as the U.S. National Transonic Facility.