Hendratta, Liany A. and Mananoma, Tiny and Sumarauw, Jeffry and Ohmoto, Terunori
(2014)
RHEOLOGICAL CHARACTERISTICS OF HYPERCONCENTRATED
SEDIMENT-LADEN PIPE FLOW.
In: The International Conference on Environmentally Friendly Civil Engineering Construction and Materials: Creating and Adapting Sustainable Technologies, 13 – 14 NOVEMBER 2014, MANADO –INDONESIA.
Abstract
The characterisation of the flow of large suspended sediment loads is an area of ongoing
research. This paper concerns an experimental study of the fully developed turbulent pipe flow with
silt particles deposited in lower region of the river basin. The flow data include friction factor vs.
Reynolds number, volumetric sediment concentration, and mean flow velocity. In addition, the
rheological properties of the mudflows were investigated by using both coaxial cylinder rheometer
and parallel plate one. The experimental results stressed that at high sediment concentration
mudflows did not fit to the Bingham model at low shear rates, the friction factor increased with the
sediment concentration which result from the viscosity increase by two to three orders magnitude.
KEYWORDS: mudflows, sediment concentration, rheological properties, viscosity
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