Author(s): M. F. Tachie; S. S. Paul; C. Katopodis
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Keywords: No Keywords
Abstract: The paper reports on an experimental study of turbulent near wake of shallow open channel. The experiments were conducted for square, circular, and trapezoidalshape cylinders. The Reynolds number based on depth of flow and boundary layer momentum thickness, were, respectively, 19,500 and 1,540. Correspondingly, the Froude number was 0.3 indicating that the flow is in the sub-critical regime. A particle image velocimetry technique was used to conduct velocity measurements around and in the near wake of the cylinder models, from which iso-contours and profiles of the mean velocities and turbulent statistics were obtained and discussed. A strong link between the cross-sections of the leading surfaces of the cylinders on the near wake patterns is observed.
Year: 2009