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Regime theory and the stability of straight channels with bankfull and overbank flow

Lookup NU author(s): Professor Eric Valentine, Dr James Bathurst


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Experiments have been carried out at a large laboratory scale to test a rational regime theory and to study the development of regime channel morphology for straight loose-boundary channels (bed and banks) in fixed flood plains for a range of flow conditions. Results are presented for straight channels which have been developed with bankfull flows and then subjected to overbank flows, and include friction and sediment transport data. These indicate reasonable theoretical agreement with the friction data but the sediment transport rate is underestimated. Stability of the main channel was assessed in response to bedforms, bank erosion and hydraulic friction and sediment transport. For overbank flows, rates of bank erosion have been measured. These measurements constitute unique overbank widening data for the main channel.

Publication metadata

Author(s): Valentine EM, Benson I, Nalluri C, Bathurst JC

Publication type: Article

Publication status: Published

Journal: Journal of Hydraulic Research

Year: 2001

Volume: 39

Issue: 3

Pages: 259-268

Print publication date: 01/01/2001

ISSN (print): 0022-1686

ISSN (electronic):