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Self-organisation and entropy in the 2-D morphological modelling of an open channel

Self-organisation and entropy in the 2-D morphological modelling of an open channel
Self-organisation and entropy in the 2-D morphological modelling of an open channel
A robust method has been developed to predict the two-dimensional morphology of sediment in a rectangular channel that contains a constriction, using self-organisation. This method overcomes the need to model the formation of dynamic equilibrium morphologies over time, which can lead to the amplification of small errors in each time step. This method will be of benefit to areas of coastal research such as the prediction of equilibrium formations behind a detached breakwater, and the formation of complex morphology in an estuary. This paper includes a comparison of a number of different methods and objective function formulae and discusses their strengths and weaknesses. It concludes that the self-organisation method compares favourably to a process-based method and a laboratory study, and outperforms extrema hypotheses methods.
299-309
Nield, Joanna M.
173be2c5-b953-481a-abc4-c095e5e4b790
Walker, David J.
545cf0b8-54a0-4a43-8d39-ff42e1209c4e
Lambert, Martin F.
9dc677bb-34f3-446a-a7f0-0daa444a43ac
Nield, Joanna M.
173be2c5-b953-481a-abc4-c095e5e4b790
Walker, David J.
545cf0b8-54a0-4a43-8d39-ff42e1209c4e
Lambert, Martin F.
9dc677bb-34f3-446a-a7f0-0daa444a43ac

Nield, Joanna M., Walker, David J. and Lambert, Martin F. (2003) Self-organisation and entropy in the 2-D morphological modelling of an open channel. 3rd IAHR Symposium of River, Coastal and Estuarine Morphodynamics. 01 Sep 2003. pp. 299-309 .

Record type: Conference or Workshop Item (Paper)

Abstract

A robust method has been developed to predict the two-dimensional morphology of sediment in a rectangular channel that contains a constriction, using self-organisation. This method overcomes the need to model the formation of dynamic equilibrium morphologies over time, which can lead to the amplification of small errors in each time step. This method will be of benefit to areas of coastal research such as the prediction of equilibrium formations behind a detached breakwater, and the formation of complex morphology in an estuary. This paper includes a comparison of a number of different methods and objective function formulae and discusses their strengths and weaknesses. It concludes that the self-organisation method compares favourably to a process-based method and a laboratory study, and outperforms extrema hypotheses methods.

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More information

Published date: September 2003
Venue - Dates: 3rd IAHR Symposium of River, Coastal and Estuarine Morphodynamics, 2003-09-01 - 2003-09-01

Identifiers

Local EPrints ID: 58075
URI: https://eprints.soton.ac.uk/id/eprint/58075
PURE UUID: 337a6666-b0e6-4e7f-b086-df5402a23259
ORCID for Joanna M. Nield: ORCID iD orcid.org/0000-0002-2657-0525

Catalogue record

Date deposited: 18 Aug 2008
Last modified: 14 Mar 2019 01:39

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