中国物理B ›› 2017, Vol. 26 ›› Issue (2): 25205-025205.doi: 10.1088/1674-1056/26/2/025205

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇    下一篇

High sampling-rate measurement of turbulence velocity fluctuations in Mach 1.8 Laval jet using interferometric Rayleigh scattering

Li Chen(陈力), Fu-Rong Yang(杨富荣), Tie Su(苏铁), Wei-Yi Bao(鲍伟义), Bo Yan(闫博), Shuang Chen(陈爽), Ren-Bing Li(李仁兵)   

  1. China Aerodynamics Research and Development Center, Mianyang 621000, China
  • 收稿日期:2016-10-04 修回日期:2016-11-08 出版日期:2017-02-05 发布日期:2017-02-05
  • 通讯作者: Li Chen E-mail:chenli_03@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11272337).

High sampling-rate measurement of turbulence velocity fluctuations in Mach 1.8 Laval jet using interferometric Rayleigh scattering

Li Chen(陈力), Fu-Rong Yang(杨富荣), Tie Su(苏铁), Wei-Yi Bao(鲍伟义), Bo Yan(闫博), Shuang Chen(陈爽), Ren-Bing Li(李仁兵)   

  1. China Aerodynamics Research and Development Center, Mianyang 621000, China
  • Received:2016-10-04 Revised:2016-11-08 Online:2017-02-05 Published:2017-02-05
  • Contact: Li Chen E-mail:chenli_03@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11272337).

摘要: Interferometric Rayleigh scattering diagnostic technique for the time-resolved measurement of flow velocity is studied. Theoretically, this systematic velocity-measured accuracy can reach up to 1.23 m/s. Measurement accuracy is then evaluated by comparing with hot wire anemometry results. Moreover, the distributions of velocity and turbulence intensity in a supersonic free jet from a Laval nozzle with a Mach number of 1.8 are also obtained quantitatively. The sampling rate in this measurement is determined to be approximately 10 kHz.

关键词: Fabry-Pé, rot interferometer, Rayleigh scattering, time-resolved velocity measurement, turbulence

Abstract: Interferometric Rayleigh scattering diagnostic technique for the time-resolved measurement of flow velocity is studied. Theoretically, this systematic velocity-measured accuracy can reach up to 1.23 m/s. Measurement accuracy is then evaluated by comparing with hot wire anemometry results. Moreover, the distributions of velocity and turbulence intensity in a supersonic free jet from a Laval nozzle with a Mach number of 1.8 are also obtained quantitatively. The sampling rate in this measurement is determined to be approximately 10 kHz.

Key words: Fabry-Pérot interferometer, Rayleigh scattering, time-resolved velocity measurement, turbulence

中图分类号:  (Rayleigh scattering; stimulated Brillouin and Raman scattering)

  • 52.38.Bv
42.65.Es (Stimulated Brillouin and Rayleigh scattering) 47.60.Kz (Flows and jets through nozzles) 47.85.Gj (Aerodynamics)