Exploratory study of shock reflection near an expansion corner

Frank K. Lu, Kung Ming Chung

研究成果: Paper同行評審

1 引文 斯高帕斯(Scopus)

摘要

Experiments were performed at Mach 8 in which a shock was reflected off a low Reynolds number, turbulent boundary layer past an expansion corner. The shock was generated by 2- and 4-deg sharp wedges and the corner was either 2.5 or 4.25 deg. The inviscid shock reflection was one boundary layer thickness ahead or behind the corner or at the corner itself. All interactions were unseparated. The dynamic surface pressure distributions were together with the case of shock reflection on a flat plate. With shock reflection ahead of the corner, the mean surface pressure downstream was attenuated due to the proximity of the corner. With shock reflection downstream of the corner, the surface pressure distribution showed a reduced upstream influence. The highly swept expansion fan produced a surface pressure which rose gently downstream with no minima, in supersonic flows with the same shock-corner separation distance. In of the interactions, an anomalous pressure peak was found downstream. The surface pressure through the interaction exhibited unsteadiness. A peak in the 2-3 times that of the incoming rms value, was found ahead of the shock reflection location. Secondary were also found downstream.

原文English
DOIs
出版狀態Published - 1993 一月 1
事件AIAA 23rd Fluid Dynamics, Plasmadynamics, and Lasers Conference, 1993 - Orlando, United States
持續時間: 1993 七月 61993 七月 9

Other

OtherAIAA 23rd Fluid Dynamics, Plasmadynamics, and Lasers Conference, 1993
國家United States
城市Orlando
期間93-07-0693-07-09

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Engineering (miscellaneous)

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