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(Article of periodic en Anglais - 2011)

Document title

Flow structures at an idealized bifurcation : a numerical experiment

Authors(s) and Affiliation(s)

HARDY R.J. (1) ; LANE S.N. (2) ; YU D. (3) ;
(1) Dep. of Geography, Univ., Durham, ROYAUME-UNI
(2) Inst. de Géographie, Fac. des Géosciences et de l'Environnement, Univ., Lausanne, SUISSE
(3) Dep. of Geography, Univ., Loughborough, ROYAUME-UNI

Abstract

This paper presents results of a numerical sensitivity experiment undertaken using computational fluid dynamics (CFD) with the purpose of understanding the flow dynamics of a series of idealized bifurcations. A geometric sensitivity analysis is undertaken for a range of channel slopes (0.005 to 0.03), bifurcation angles (22° to 42°) and a restricted set of inflow conditions based upon simulating flow through meander bends with different curvature on the flow field dynamics through the bifurcation. The results demonstrate that the overall slope of the bifurcation affects the velocity of flow through the bifurcation and when slope asymmetry is introduced, the flow structures in the bifurcation are modified.

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2011, vol. 36, no15 [pp. 2083-2096]

Bibliographic references : 38 ref.

Collation : 9 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2235

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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