An analytical solution for the local suspended sediment concentration profile in tidal sea region SCIE SCOPUS

Cited 9 time in WEB OF SCIENCE Cited 0 time in Scopus
Title
An analytical solution for the local suspended sediment concentration profile in tidal sea region
Author(s)
Jung, KT; Jin, JY; Kang, HW; Lee, HJ
KIOST Author(s)
Jin, Jae Youll(진재율)Kang, Hyoun-Woo(강현우)
Publication Year
2004-12
Abstract
The time-averaged and oscillatory solutions of the one-dimensional vertical (1DV) advection-diffusion equation for the suspended sediment have been derived analytically in a tidal sea region of finite water depth. The basic equation assumes constant eddy diffusivity and settling velocity. No net flux condition is set at the sea surface, while a boundary condition with the erosion rate and depositional velocity is prescribed at the sea bottom. The time-averaged solution has been derived in a straightforward manner, while the advection-diffusion equation governing the oscillatory concentration has been first transformed to a simple diffusion equation and then solved using the Galerkin-eigenfunction method. The former is given in a closed form, while the latter is presented in a series solution. A set of calculations has been performed to examine the change in the vertical structure as well as magnitude of the concentration response function. A possible use of the solution to make an estimate of the erosion rate at the sea bottom based on the concentration information at the sea surface is discussed. (C) 2004 Elsevier Ltd. All rights reserved.
ISSN
0272-7714
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5194
DOI
10.1016/j.ecss.2004.07.007
Bibliographic Citation
ESTUARINE COASTAL AND SHELF SCIENCE, v.61, no.4, pp.657 - 667, 2004
Publisher
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
Subject
VISCOSITY; TRANSPORT; MODELS; FLOW; WAVE
Keywords
advection-ditfusion equation; analytical solution; eigenfunction; Galerkin method; settling velocity; suspended sediment
Type
Article
Language
English
Document Type
Article
Publisher
ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

Sediment transport,Coastal erosion,Numerical modeling,퇴적물이동,연안침식,수치모델

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