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Yang Furong, Chen Li, Yan Bo, Su Tie, Bao Weiyi, Chen Shuang. Measurement of turbulence velocity fluctuations in transonic wind tunnel using Interferometric Rayleigh Scattering diagnostic technique[J]. Journal of Experiments in Fluid Mechanics, 2018, 32(3): 82-86. DOI: 10.11729/syltlx20170103
Citation: Yang Furong, Chen Li, Yan Bo, Su Tie, Bao Weiyi, Chen Shuang. Measurement of turbulence velocity fluctuations in transonic wind tunnel using Interferometric Rayleigh Scattering diagnostic technique[J]. Journal of Experiments in Fluid Mechanics, 2018, 32(3): 82-86. DOI: 10.11729/syltlx20170103
shu

Measurement of turbulence velocity fluctuations in transonic wind tunnel using Interferometric Rayleigh Scattering diagnostic technique

  • 1.

    Science and Technology on Scramjet Laboratory, Hypervelocity Aerodynamics Institute of China Aerodynamics Research and Development Center, Sichuan Mianyang 621000, China

  • 2.

    China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China

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  • Received Date: August 13, 2017
  • Revised Date: October 29, 2017
    Graphical Abstract
    • Abstract
  • The interferometric Rayleigh scattering diagnostic technique for the time-resolved velocity measurement of the transonic wind tunnel is studied. The velocity-measurement apparatus, consisted of a CW laser, a high resolution Fabry-Pérot interferometer and a high-speed EMCCD camera, is designed. Rayleigh scattering light is produced as the flow irradiated by the laser. Then the light is collected and analyzed accurately by the Fabry-Pérot interferometer and the camera. Theoretically, this systematic velocity-measurement accuracy can reach 1.23m/s. Measurement accuracy is then evaluated by comparing with hot wire anemometry results. Moreover, the distributions of velocity and turbulence intensity in a supersonic flow at Mach number 3.0 are obtained quantitatively. The sampling rate in this measurement reached about 4 kHz.
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    • References (19)
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