Journal ArticleDOI
Flow formulae for straight two-stage channels
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TLDR
In this article, a suite of functions has been derived for assessing overall conveyance, allowing also for a wide range of geometries and different roughness between flood plain and main channel.Abstract:
Recent research has shown that conventional methods for the hydraulic design of two-stage channels are incorrect as they fail to allow for the loss in conveyance arising from the interaction between the main channel and flood plains. Recent research at large scale has been reviewed and interpretted in the context of the need for practical design procedures. Flow may lie in one of several regions of performance depending largely on the relative depths of flow on the flood plains and in the main channel, and a suite of functions has been derived for assessing overall conveyance, allowing also for a wide range of geometries and different roughness between flood plain and main channel. The new information has wide implications for openchannel hydraulics, river engineering and flood management.read more
Citations
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Journal ArticleDOI
Flow Patterns in Compound Channels with Vegetated Floodplains
TL;DR: In this paper, a 3D acoustic Doppler velocimeter was used to measure the local flow velocities for different types of vegetation on the floodplain, and the total discharge and flume slope were measured independently.
Journal ArticleDOI
Flow interaction of meandering river with floodplains
Kanhu Charan Patra,Srijib K. Kar +1 more
TL;DR: In this paper, a series of laboratory test results were presented concerning the boundary shear stress, shear force, and discharge characteristics of compound meandering river sections composed of a rectangular main channel and one or two floodplains disposed off to its sides.
Journal ArticleDOI
Predictive modeling of discharge in compound open channel by support vector machine technique
TL;DR: The result of the error indexes shows that the best accuracy of the SVM by correlation coefficient 0.99 is related to the S VM model which includes the radial basis function (RBF) as kernel function.
Journal ArticleDOI
Discharge prediction in straight compound channels using the mixing length concept
TL;DR: In this article, a mixing length formulation is used to account for the turbulent interaction between the main channel and the floodplain and the resulting momentum exchange, which tends to reduce the discharge in the main channels and increase the discharge on the flood plain.
Journal ArticleDOI
Neural network model for discharge and water-level prediction for Ramganga River catchment of Ganga Basin, India
TL;DR: In this paper, an artificial neural network model has been developed for the Ramganga River catchment of the Ganga Basin, which is trained, validated and tested using daily water flow and level data pertaining to 4 years (2010-2013).
References
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Book
Open-channel hydraulics
TL;DR: This book discusses the development of Uniform Flow and its applications, as well as the theory and analysis of open channel flow, and the design of channels for Uniform Flow.
Journal ArticleDOI
Flood Plain and Main Channel Flow Interaction
Donald W. Knight,John Demetriou +1 more
TL;DR: In this paper, the discharge characteristics, boundary shear stress and boundary force distributions in a compound section comprising of one rectangular main channel and two symmetrically disposed flood plains were analyzed.
Journal ArticleDOI
Turbulence measurements in a shear layer region of a compound channel
Donald W. Knight,Koji Shiono +1 more
TL;DR: In this article, the authors describe some turbulence measurements carried out in the SERC Flood Channel Facility at Hydraulics Research Ltd., Wallingford, U.K. The facility represents a large scale model of a river system with floodplains, and is designed to produce fully developed boundary layer flows with transverse shear.
Journal ArticleDOI
Discharge Assessment in Compound Channel Flow
TL;DR: In this paper, a series of laboratory tests were performed to measure the boundary shear stresses in a compound channel consisting of a main channel and associated shallow floodplains and four different floodplain roughnesses were used.
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