NDLI: Physical and Mathematical Modeling of Solid-Liquid Flow at High Bed Shear in Steep Flume

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Matoušek, Václav Zrostlík, Štěpán Krupička, Jan Picek, Tomáš Bareš, Vojtěch
Copyright Year	2015
Abstract	The paper discusses new results of our experimental- and mathematical modeling of sediment-laden open-channel flows in the upper plane bed regime associated with intense transport of sediment. Our recent studies showed that bed-load transport and bed friction are interrelated and classical formulae for bed friction (Nikuradse formula) and bed-load transport (Meyer-Peter and Muller formula) need to be modified to account for the intense transport of sediment. The new results of our laboratory experiments in a tilting flume are presented and analyzed for different sediment fractions. The analysis is focused on the effect of solids density and size on the solid-liquid flow characteristics as the solids flow rate, flow depth, and bed slope for certain flow rate of water in a channel of given geometry. The experimental results are compared with outputs of our mathematical model simulating the observed phenomena. The simple 1-D model combines hydrodynamic- and sediment-transport equations and enables to use different transport- and friction formulae to predict the solids transport, flow depth and bed slope under the condition of (pseudo-) uniform flow of solid-water mixture in the open channel.
Sponsorship	Fluids Engineering Division
File Format	PDF
ISBN	9780791857212
DOI	10.1115/AJKFluids2015-31238
Volume Number	Volume 1: Symposia
Conference Proceedings	ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
Language	English
Publisher Date	2015-07-26
Publisher Place	Seoul, South Korea
Access Restriction	Subscribed
Subject Keyword	Water Geometry Friction Flumes Solids Open channels (hydraulics) Shear (mechanics) Sediments Flow (dynamics) Modeling Density Stress
Content Type	Text
Resource Type	Article

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