Title: Secondary Flows in Rivers: Theoretical Framework, Recent Advances, and Current Challenges
Abstract: Although the great significance of secondary flows for river processes has long been recognised, their origin, mechanics, effects, and interrelations with the primary mean flow and turbulence are still under debate and continue to attract the close attention of hydrologists, geomorphologists, engineers, and, recently, stream ecologists. The rapid development of measurement and numerical capabilities in recent years has brought significant new results that are reviewed in this paper. In particular, the focus of the paper is on (1) the theoretical frameworks for studying secondary flows, (2) interrelations between turbulence and secondary flows, and (3) secondary flow effects on hydraulic resistance, sediment dynamics, and mixing. Some applications in the context of gravel-bed rivers are described. In addition to open-channel flows, selected results related to conduits/ducts are also considered as they are directly relevant to flows in ice-covered rivers.
Publication Year: 2012
Publication Date: 2012-01-20
Language: en
Type: other
Indexed In: ['crossref']
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Cited By Count: 61
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