Reynolds number effect on compressible cylindrical cavity flow

Kung Ming CHUNG, Yi Xuan HUANG, Kuan Huang LEE, Keh Chin CHANG

研究成果: Article

摘要

Presence of a cavity changes the mean and fluctuating pressure distributions inside and near the cavity. For cylindrical cavity flow, the diameter-to-depth ratio is the dominant factor. In this study, flow is naturally developed along a flat plate with two different lengths, resulting in different incoming boundary layer thicknesses ahead of the cavity. The effect of Reynolds number based on incoming boundary layer thickness on characteristics of mean and fluctuating pressure distributions is addressed. Pressure sensitive paint was also used to visualize the mean surface pressure patterns. The effect of Reynolds number on the classification of compressible cylindrical cavity flow and self-sustained oscillating frequency is not significant. An increase in Reynolds number results in a reduction in the value of differential pressure or momentum flux near the rear edge.

原文English
期刊Chinese Journal of Aeronautics
DOIs
出版狀態Accepted/In press - 2020 一月 1

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanical Engineering

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