中国物理B ›› 2013, Vol. 22 ›› Issue (2): 24704-024704.doi: 10.1088/1674-1056/22/2/024704

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Simultaneous density and velocity measurements in a supersonic turbulent boundary layer

何霖, 易仕和, 田立丰, 陈植, 朱杨柱   

  1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • 收稿日期:2012-06-27 修回日期:2012-08-23 出版日期:2013-01-01 发布日期:2013-01-01
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2009CB724100) and the National Natural Science Foundation of China (Grant No. 11172326).

Simultaneous density and velocity measurements in a supersonic turbulent boundary layer

He Lin (何霖), Yi Shi-He (易仕和), Tian Li-Feng (田立丰), Chen Zhi (陈植), Zhu Yang-Zhu (朱杨柱)   

  1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2012-06-27 Revised:2012-08-23 Online:2013-01-01 Published:2013-01-01
  • Contact: Yi Shi-He E-mail:ysh_1819@yahoo.com.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2009CB724100) and the National Natural Science Foundation of China (Grant No. 11172326).

摘要: A novel technique for simultaneous measurements of instantaneous whole-field density and velocity fields of supersonic flows has been developed. The density measurement is performed based on the nano-tracer planar laser scattering (NPLS) technique, while the velocity measurement is carried out using particle image velocimetry (PIV). The present experimental technique has been applied to a flat-plate turbulent boundary layer at Mach 3, and the measurement accuracy of the density and velocity are discussed. Based on this new technique, the Reynolds stress distributions were also obtained, demonstrating that this is an effective means for measuring Reynolds stresses under compressible conditions.

关键词: simultaneous measurements, density, velocity, Reynolds stress

Abstract: A novel technique for simultaneous measurements of instantaneous whole-field density and velocity fields of supersonic flows has been developed. The density measurement is performed based on the nano-tracer planar laser scattering (NPLS) technique, while the velocity measurement is carried out using particle image velocimetry (PIV). The present experimental technique has been applied to a flat-plate turbulent boundary layer at Mach 3, and the measurement accuracy of the density and velocity are discussed. Based on this new technique, the Reynolds stress distributions were also obtained, demonstrating that this is an effective means for measuring Reynolds stresses under compressible conditions.

Key words: simultaneous measurements, density, velocity, Reynolds stress

中图分类号:  (Supersonic and hypersonic flows)

  • 47.40.Ki
47.27.nb (Boundary layer turbulence ?) 47.80.Jk (Flow visualization and imaging)