Bursting phenomenon created by bridge piers group in open channel flow

نویسندگان

چکیده

Abstract Bridge pier is a common feature in hydraulic structure. Its impact to the river usually occurs group form rather than single pier, so this challenging piers-group influence towards hydraulics and turbulence needs be explored. In paper, measurements were conducted using an Acoustic doppler velocimeter (ADV) study velocities three dimensions (longitudinal, transversal, vertical). Based on experimental data, we have observed reversed depth-averaged velocity vector after each of three-pier. The analysis has been contribution bursting event Reynolds shear stress (RSS) generation, order identify critical events structures around piers. upstream near-wake flow bed-wall layer, strong sweep ejection observed; while at downstream, sweeps more dominant. pattern burst changed outer layer flow, where ejections Furthermore, fractional ratio RSS variation hole size H = 0 indicates that significantly generated near wake-flow upstream.

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ژورنال

عنوان ژورنال: Environmental Fluid Mechanics

سال: 2023

ISSN: ['1567-7419', '1573-1510']

DOI: https://doi.org/10.1007/s10652-023-09910-8