In: Journal of Hydrology and Hydromechanics, vol. 63, no. 4
Vaclav Matousek - Vojtěch Bareš - Jan Krupicka - Tomas Picek - Štěpán Zrostlík
Detaily:
Rok, strany: 2015, 318 - 326
Kľúčové slová:
Acoustic anemometry; Plane bed; Solid-liquid flow; Tilting flume experiment.
URL originálneho zdroja: http://www.ih.savba.sk/jhh
O článku:
Gravity-driven open-channel flows carrying coarse sediment over an erodible granular deposit are studied.
Results of laboratory experiments with artificial sediments in a rectangular tilting flume are described and analyzed. Besides
integral quantities such as flow rate of mixture, transport concentration of sediment and hydraulic gradient, the experiments
include measurements of the one-dimensional velocity distribution across the flow. A vertical profile of the
longitudinal component of local velocity is measured across the vertical axis of symmetry of a flume cross section using
three independent measuring methods. Due to strong flow stratification, the velocity profile covers regions of very different
local concentrations of sediment from virtually zero concentration to the maximum concentration of bed packing.
The layered character of the flow results in a velocity distribution which tends to be different in the transport layer above
the bed and in the sediment-free region between the top of the transport layer and the water surface. Velocity profiles and
integral flow quantities are analyzed with the aim of evaluating the layered structure of the flow and identifying interfaces
in the flow with a developed transport layer above the upper plane bed.
Ako citovať:
ISO 690:
Matousek, V., Bareš, V., Krupicka, J., Picek, T., Zrostlík, Š. 2015. Experimental investigation of internal structure of open-channel flow with
intense transport of sediment. In Journal of Hydrology and Hydromechanics, vol. 63, no.4, pp. 318-326. 0042-790X (until 2019) .
APA:
Matousek, V., Bareš, V., Krupicka, J., Picek, T., Zrostlík, Š. (2015). Experimental investigation of internal structure of open-channel flow with
intense transport of sediment. Journal of Hydrology and Hydromechanics, 63(4), 318-326. 0042-790X (until 2019) .