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Seventh International Symposium on Turbulence and Shear Flow Phenomena
July, 28-31, 2011, Ottawa Convention Centre, Ottawa, Canada

DOI: 10.1615/TSFP7

NEAR WAKE STRUCTURE OF FINITE CYLINDERS IN AN OPEN CHANNEL FLOWS

pages 1-6
DOI: 10.1615/TSFP7.1340
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摘要

The paper reports on an experimental study of turbulent flow in the near-wake region of four different finite cylinders. A particle image velocimetry technique was used to conduct detailed velocity measurements around and in the near-wake of the cylinder models. The contours as well as profiles of the mean velocities and turbulence intensities were obtained to document the salient features of the flow field. The proper orthogonal decomposition and two-point correlation functions were then applied to provide an insight into the structure of the flow. Reconstruction of the fluctuating velocity components for various numbers of POD modes were also used to investigate the role of largescale structures.

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