Critical Bed-Shear Stress for Cohesive Sediment Deposition under Steady Flows SCIE SCOPUS

Cited 31 time in WEB OF SCIENCE Cited 30 time in Scopus
Title
Critical Bed-Shear Stress for Cohesive Sediment Deposition under Steady Flows
Author(s)
Maa, Jerome Peng-Yea; Kwon, Jae-Il; Hwang, Kyu-Nam; Ha, Ho-Kyung
KIOST Author(s)
Kwon, Jae Il(권재일)
Publication Year
2008-12
Abstract
Results of two laboratory experiments on the cohesive sediment deposition behavior are presented. Data indicate that an annular flume, either with or without the channel bed and the top ring rotating in opposite directions to minimize the secondary circulation, can be used to study the deposition behavior of cohesive sediments. Direct observations on when and where the bed is formed suggest that deposition only occurs when the local bed-shear stress (tau(b)) is less than a critical value. Secondary circulation in the flume, which produced upward current near the inner corner and downward current near the outer corner, did not prevent deposition near the inner corner (because of the small tau(b)) nor promote deposition near the outer corner (because of the relatively large tau(b)).
ISSN
0733-9429
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/4423
DOI
10.1061/(ASCE)0733-9429(2008)134:12(1767)
Bibliographic Citation
JOURNAL OF HYDRAULIC ENGINEERING, v.134, no.12, pp.1767 - 1771, 2008
Publisher
ASCE-AMER SOC CIVIL ENGINEERS
Subject
EROSION
Keywords
Deposition; Laboratory tests; Sediments; Shear stress; Steady flow
Type
Article
Language
English
Document Type
Article
Publisher
ASCE-AMER SOC CIVIL ENGINEERS
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