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Journal of Flow Visualization and Image Processing
SJR: 0.11 SNIP: 0.312 CiteScore™: 0.1

ISSN 印刷: 1065-3090
ISSN オンライン: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v7.i3.30
14 pages

THE INTERNAL FLOW FIELD ASSOCIATED WITH YAWED THREE-DIMENSIONAL RECTANGULAR CAVITIES

Eric Savory
Fluid Mechanics Research Group, Department of Civil Engineering, University of Surrey, Guildford GU2 5XH, Surrey, United Kingdom
Norman Toy
Engineering & Scientific Innovations, Inc., USA
Shiki Okamoto
Department of Mechanical Engineering, Shibaura Institute of Technology, Shibaura 3-9-14, Minato-Ku, Tokyo 108, Japan
Yoko Yamanishi
Department of Mechanical Engineering, Shibaura Institute of Technology, Shibaura 3-9-14, Minato-Ku, Tokyo 108, Japan

要約

The present work concerns an investigation of the flows associated with three-dimensional rectangular yawed cavities placed within a subsonic boundary layer. Data are presented from a number of different wind tunnel experiments, namely, internal and wake flow measurements using a Laser Doppler anemometer, drag measurements, and unsteady pressure measurements. In addition, flow visualization using the thymol blue technique has been used to identify how the asymmetric nature of the internal cavity flow develops as the yaw angle is changed. The results show that the flow asymmetry and unsteadiness that occurs at yaw angles of about 45° is related to an increase in the cavity drag and an increase in the size and turbulence intensity of the near wake.


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