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Vortex Simulations of the Flow-Field of a Flat Plate with a Non-Zero Angle of Attack

Published online by Cambridge University Press:  05 May 2011

C.-C. Hsu  and
C.-I Huang
C.-C. Hsu*
Affiliation:
Department of Aircraft Engineering, Air Force Institute of Technology, Kaohsiung, Taiwan 82047, R.O.C.
C.-I Huang*
Affiliation:
Department of Mechanical Engineering, National Cheng Kung University, Tainan, Taiwan 70101, R.O.C.
*
*Assistant Professor
**Professor
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Abstract

A Lagrangian style vortex simulation technique is used to study the flow fields past a stationary flat plate at various angles of attack in the range 1° to 90°. Time mean values of oscillating lift and drag coefficients, and the Strouhal number versus angle of attack are computed and compared with experimental results. Time-mean and root-mean-square values of stream-wise and transverse velocities in the wake region are also calculated. Self-similar defect velocity distribution is obtained far downstream. Owing to the interaction of free shear layers, highly root-mean-square values of velocities appear at the downstream vertex of the triangular low velocity region, which exits behind an inclined flat plate.

Keywords

Vortex simulationFlat plateWakeStrouhal number.
Type
Technical Note
Information
Journal of Mechanics , Volume 24 , Issue 3 , September 2008 , pp. N35 - N38
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2008

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