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Coherent Eddy Structure in Meandering Compound Open-Channel Flows

Author(s): Michio Sanjou; Iehisa Nezu; Hoang Quang

Linked Author(s): Michio Sanjou

Keywords: Compound open-channel flow; Coherent structure; PIV

Abstract: It is very important to reveal the coherent structure in meandering compound open-channel flows for predicting the transport properties of suspended sediments in rivers in flood. However, flow-visualization techniques such as PIV and PTV, have not sufficiently been applied to such flows in previous studies, and thus, there is almost no detailed information on coherent turbulence in meandering compound open-channel flows. Therefore, in this study, we conducted some PIV measurements with a high-speed CMOS camera. The time-averaged velocity properties and coherent turbulence structure were investigated and considered on the basis of the present measured data.


Year: 2007

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