Unit stream power for sediment transport in natural rivers
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Unit stream power for sediment transport in natural rivers final report, Project no. B-075-ILL ... July 1, 1972-June 30, 1974 by Chih Ted Yang

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Published by University of Illinois, Water Resources Center in Urbana .
Written in English


  • Sediment transport.

Book details:

Edition Notes

Statementby Chih Ted Yang and John B. Stall.
SeriesWRC research report ;, no. 88
ContributionsStall, John Byron, joint author.
LC ClassificationsHD1694 .A136 no. 88, TC175.2 .A136 no. 88
The Physical Object
Pagination38 p. :
Number of Pages38
ID Numbers
Open LibraryOL4855812M
LC Control Number75620532

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Sediment Transport and Unit Stream Power Function. Basic fluid mechanics and turbulence theories are applied to show that suspended sediment concentration at a given depth of an open channel flow is a function of the turbulence energy production rate at that depth. Depth-averaged suspended sediment concentration can be obtained by integrating a function of the turbulence Cited by: Applicability of Unit Stream Power Equation. The usefulness of a sediment transport equation to engineering depends on its applicability to natural rivers. Data collected from six river stations are used to compare the applicability of different equations. These comparisons indicate that the dimensionless unit stream power equation is the one which can provide accurate predictions Cited by: Chapter 6 Stream Hydraulics Channel cross-sectional parameters A variety of channel cross-sectional parameters are used in the hydraulic analysis of streams and rivers. It is important to measure and use these parameters con-sistently and accurately. A generalized cross section is shown in figure 6–1.   Maddock, T. (). Sediment transport and unit stream power function. Journal of Hydraulic Engineering, (12), (ASCE) Author: Thomas Maddock.

  Unit stream power is the most important and dominant parameter for the determination of transport rate of sand, gravel, and hyper-concentrated sediment with wash load. The unit stream power theory can also be applied to the study of surface erosion. The unit stream power theory can be derived from the basic theories in turbulence and fluid Cited by: 1. CHAPTER 13 THE SEDIMENT TRANSPORT RATE INTRODUCTION 1 By the sediment transport rate, also called the sediment discharge, I mean the mass of sedimentary material, both particulate and dissolved, that passes across a given flow-transverse cross section of a File Size: KB. Hence, the sediment transport rate is essentially a measure of the rate of work done in transporting the sediment. The available power of an open turbulent stream is the time rate of con-version of potential gravity energy into kinetic turbulent eddy energy (and thence into heat energy}. Hence the available power of an open stream flow­Cited by: Stream power per unit bed area: w w = r g Q s / w where: r = density of water Q = discharge s = slope velocity gradient, stream power; resisting forces. sediment characteristics (grain size, density, shape, packing, sorting, cohesion) weakening and weathering of bank material assess conditions under which rivers make adjustments to or.

that affect the hydraulics of flow and the natu re of sediment transport in a natural stream. As indicated Yang et al. (), the Yellow Rive r in China is notorious for enormous amount of. Sediment transport is the movement of solid particles (), typically due to a combination of gravity acting on the sediment, and/or the movement of the fluid in which the sediment is entrained. Sediment transport occurs in natural systems where the particles are clastic rocks (sand, gravel, boulders, etc.), mud, or clay; the fluid is air, water, or ice; and the force of gravity acts to move . Yang's () sediment transport theory based on unit stream power is one of the most accurate theories, but in his equations the use of product of slope and critical velocity instead of critical. The animation shows the transport of sediment under low flow and high flow conditions in a stream. Most of the sediment transport occurs in high flow conditions. Sediment load is the solid material carried by water and transported through saltation (bouncing), traction (rolling and dragging) and suspension (carrying in water).