A two-zone model for longitudinal dispersion in channels with idealized pools and riffles

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Title:A two-zone model for longitudinal dispersion in channels with idealized pools and riffles
Creators:
Valentine, Eric M.; Dept. of Civil Engineering, Univ. of Newcastle upon Tyne, NE1 7RU, UK
Ali, Zulfiqar; Technical University of Lahore, Pakistan
Swailes, David C.; Dept. of Engineering Mathematics, Univ. of Newcastle upon Tyne, NE1 7RU, UK
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 50, 2, pp. 77-103
Uncontrolled Keywords:Dispersion, Open-Channel Flow, Dead Zones, Pools and Riffles, Numerical Model

Abstract

A one-dimensional two-zone mathematical model, comprising a pair of advection-dispersion equations coupled by a mass exchange term, is proposed to study longitudinal dispersion in channels with sequences of pools and riffles. An implicit finite-difference numerical scheme is employed, and its effectiveness is assessed with reference to known analytical solutions. Moreover, sets of longitudinal dispersion experiments were performed on various simple geometries of sequences of pools and riffles developed in a laboratory flume. The results were compared with corresponding numerical solutions to calibrate the two-zone model.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:A two-zone model for longitudinal dispersion in channels with idealized pools and riffles
Translated title:Dvouzónový model podélné disperze v korytech s idealizovanými tůněmi a prahy
Creators:
Valentine, Eric M.; Dept. of Civil Engineering, Univ. of Newcastle upon Tyne, NE1 7RU, UK
Ali, Zulfiqar; Technical University of Lahore, Pakistan
Swailes, David C.; Dept. of Engineering Mathematics, Univ. of Newcastle upon Tyne, NE1 7RU, UK
Uncontrolled Keywords:Dispersion, Open-Channel Flow, Dead Zones, Pools and Riffles, Numerical Model
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:50
Number:2
Page Range:pp. 77-103
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:6144
Item Type:Article
Deposited On:25 Jun 2010 17:53
Last Modified:25 Jun 2010 15:53

Citation

Valentine, Eric M.; Ali, Zulfiqar; Swailes, David C. (2002) A two-zone model for longitudinal dispersion in channels with idealized pools and riffles. Journal of Hydrology and Hydromechanics, 50 (2). pp. 77-103. ISSN 0042-790X

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