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Journal of Hydrodynamics

, Volume 18, Issue 1, pp 450–453 | Cite as

Experimental measurements of turbulent boundary layer flow over a square-edged rib

  • Feng Ke
  • Ying-zheng Liu
  • Chun-yu Jin
  • Wei-zhe Wang
Session B7

Abstract

Statistical turbulence properties of turbulent flow over a two-dimensional rib which was flush mounted on a wind tunnel wall was extensively surveyed. Velocity fluctuations in the turbulent separated and reattaching flow and wall-pressure fluctuations on the rib and its downstream surface were obtained by using a split-fiber hotwire anemometry and a 32-channel microphone array, respectively. Distribution of the wall static pressure was acquired by using a Scanivalve system. Statistical quantities of the turbulent separated and reattaching flow were determined in terms of wall static pressure distribution, profiles of the streamwise velocity and its fluctuations, wall pressure fluctuation coefficient, and wall-pressure spectra. Characteristics of the shedding large-scale vortical structures buried in the turbulent flow were disclosed.

Key words

turbulent flow surface-mounted rib wall pressure fluctuations large-scale vortical structure 

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Copyright information

© China Ship Scientific Research Center 2006

Authors and Affiliations

  • Feng Ke
    • 1
  • Ying-zheng Liu
    • 1
  • Chun-yu Jin
    • 1
  • Wei-zhe Wang
    • 1
  1. 1.School of Mechanical and Power EngineeringShanghai Jiaotong UniversityShanghaiChina

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