섬유

flow-visualization of three-dimensional boundary-layer separation on bodies of revolution at incidence

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 319
surface streamline patterns on three bodies of revolution, namely a spheroid, a low-drag body and a hemisphere-hemispheroid combination body, have been examined at several angles of attack. most of the tests were performed at low reynolds numbers in a hydraulic flume using colored dye to make the surface flow visible. a limited number of experiments was also carried out in a wind tunnel, using wool tufts, to study the influence of reynolds number and turbulent separation. the study has verified some of the important qualitative features of three-dimensional separation criteria proposed earlier by maskell, lighthill, wang and others. the observed locations of laminar separation lines on a spheroid at various incidences have been compared with the numerical boundary-layer solutions of wang, and it is suggested that the quantitative differences may be attributed to the significant viscous-inviscid interaction, especially at large incidences. (author)
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