Optical Methods for Sediment-Laden Flows

by R. N. Parthasarathy, Univ of Oklahoma, Norman, United States,
M. Muste, Univ of Oklahoma, Norman, United States,

Document Type: Proceeding Paper

Part of: Fundamentals and Advancements in Hydraulic Measurements and Experimentation


A method of distinguishing between the signals from the liquid-seed particles and sediment particles, while using LDV in sediment-laden flows, is described. The validity of the method was tested in measurements made in a flume. It was also found that off-axis forward-scatter detection was more promising than backward-scatter detection for the measurement of particle velocities due to better signal-to-noise ratio. However, since signals from dust were also recorded in forward-scatter detection, an auxiliary system to identify signals from sediment particles was required.

Subject Headings: Sediment | Particle velocity | Sediment transport | Flumes | Traffic signals | Particle size distribution | Lasers | Particles

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