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Role of near-bed turbulence in bedload transport

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Abstract

Bedload transport by a turbulent fluid moving over an erodible sediment bed results from complex interactions between flow field of the overlying fluid and the grains making up the bed. To develop a better view of these interactions, a method that combines high-speed photography with laser-Doppler velocimetry was devised. The methodology permits correlation of bedload transport with local turbulence structure at a frequency resolution of 10 hz. By making a suite of measurements at varying distances from a backward step, data were obtained for a variety of flows with different turbulence characteristics ranging from steady, uniform boundary layers to highly intermittent, nonuniform wake-like flows.

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title Role of near-bed turbulence in bedload transport
Volume 2
Year Published 1995
Language English
Publisher ASCE
Publisher location New York, NY, United States
Larger Work Title Proceedings of Engineering Mechanics
First page 686
Last page 689
Conference Title Proceedings of the 10th Conference on Engineering Mechanics. Part 1 (of 2)
Conference Location Boulder, CO, USA
Conference Date 21 May 1995 through 24 May 1995
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