IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR Asia Pacific Division Proceedings : 19th IAHR APD Congress, Hanoi 2014 : Session 1: ENVIRONMENTAL HYDRAULICS : FLOW RESISTANCE AND NON-NEWTONIAN CHARACTERISTICS OF HYPER-CONCENTRATED SEDIMENT LADEN FLOW IN AN OP...
FLOW RESISTANCE AND NON-NEWTONIAN CHARACTERISTICS OF HYPER-CONCENTRATED SEDIMENT LADEN FLOW IN AN OPEN CHANNEL
Author : LIANY A. HENDRATTA(1), TERUNORI OHMOTO(2) & SHOGO NISHI(3)
Concerning hyper-concentrated sediment-laden flow in an open channel, only a small number of studies have been conducted to obtain detailed measurement data on flow velocity changes because of the difficulty in measurement, and the influence of non-Newtonian fluid properties on resistance and the internal structure of flow remains poorly understood. We conducted an open channel experiment using a water solution of sodium polyacrylate (PSA), whose properties are close to those of a 30% (by volume) suspension of Yellow River sediment and a 10% (by volume) kaolin suspension, both of which are non-Newtonian fluids. This study has shown that non-Newtonian fluid properties can be expressed with a power-law model and shed light on the relationship between its parameters and sediment concentration by volume. The reproducibility of hyper-concentrated sediment- laden flow by use of a PSA solution as a simulant fluid has been evaluated from the viewpoint of the law of resistance. Finally, rheological mechanisms of hyper-concentrated sediment-laden flow were investigated by particle image velocimetry (PIV).
File Size : 2,144,767 bytes
File Type : Microsoft Word Document
Chapter : IAHR Asia Pacific Division Proceedings
Category : 19th IAHR APD Congress, Hanoi 2014
Article : Session 1: ENVIRONMENTAL HYDRAULICS
Date Published : 10/03/2015
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