Exploratory Calibration of Adjustable-Protrusion Surface-Obstacle (APSO) Skin Friction Vector Gage
Exploratory Calibration of Adjustable-Protrusion Surface-Obstacle (APSO) Skin Friction Vector Gage
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可调节突出表面障碍物 (APSO) 皮肤摩擦矢量量具的探索性校准
DOI：
10.2514/6.2003-740
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
R. Young
中科院分区：
文献类型：
--
作者：
R. J. Hakkinen;J. Neubauer;Philip J. Hamory;T. Bui;G. Noffz;R. Young
介绍了一种可调凸度表面障碍物（APSO）表面摩擦力矢量计的设计。本文还讨论了在华盛顿大学低速风洞中进行的层流和湍流边界层的探索性校准结果，以及在NASA格伦研究中心8 × 6英尺超音速风洞的天花板上进行的马赫数为2的湍流边界层的探索性校准结果。可调高度计的设计产生的表面剪应力矢量的大小和方向，并测量局部静压分布。NASA试验的结果表明，就采用的相似变量而言，亚音速和低超音速条件下有几个数量级的良好相关性。对这一领域今后工作的建议包括：确定造成大学和美国航天局数据集之间不一致的物理参数，对APSO的几何形状进行压缩性修正，并研究静压分布和倾斜边界层对APSO结果的影响。
The design of an adjustable-protrusion surface-obstacle (APSO) skin friction vector gage is presented. Results from exploratory calibrations conducted in laminar and turbulent boundary layers at the Washington University Low-Speed Wind Tunnel and for turbulent boundary layers at speeds up to Mach 2 on the ceiling of the NASA Glenn Research Center 8- X 6-ft Supersonic Wind Tunnel are also discussed. The adjustable-height gage was designed to yield both the magnitude and direction of the surface shear stress vector and to measure the local static pressure distribution. Results from the NASA test show good correlation for subsonic and low supersonic conditions covering several orders of magnitude in terms of the adopted similarity variables. Recommendations for future work in this area consist of identifying the physical parameters responsible for the disagreement between the university and NASA data sets, developing a compressibility correction specific to the APSO geometry, and examining the effect that static pressure distribution and skewed boundary layers have on the results from the APSO.