Large scale flow structures and mixing processes in shallow flows

Shallow turbulent flows occurring in wide rivers, estuaries, lakes or coastal regions, as well as the atmosphere, are readily susceptible to transverse disturbances that lead to two-dimensional coherent structures, the shallow jet, the shallow wake and the shallow mixing layer are examples of such f...

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Bibliographic Details
Published inJournal of hydraulic research Vol. 39; no. 6; pp. 567 - 573
Main Author Jirka, Gerhard H.
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.01.2001
Subjects
Channel flow
Coastal zones
Estuaries
Flow patterns
Friction
Jets
Lakes
Rivers
Wakes
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Summary:Shallow turbulent flows occurring in wide rivers, estuaries, lakes or coastal regions, as well as the atmosphere, are readily susceptible to transverse disturbances that lead to two-dimensional coherent structures, the shallow jet, the shallow wake and the shallow mixing layer are examples of such flow patterns, three types of generation mechanisms are proposed for these flows; namely, topographical forcing, internal transverse shear instabilities, and secondary instabilities of the base flow, the large-scale coherent structures greatly influence the mixing and transport of pollutants that are released into such flows, they may also play an important role in transverse momentum exchange that controls friction in wide channel flows.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0022-1686
1814-2079
DOI:10.1080/00221686.2001.9628285