Application of neural networks and fuzzy logic models to long-shore sediment transport

Authors:
A. R. Kabiri-Samani;J. Aghaee-Tarazjani;S. M. Borghei;D. S. Jeng
Affiliations:
Department of Civil Engineering, Isfahan University of Tech., P.O. Box 84156, Isfahan, Iran;Consultant Engineer, Tehran, Iran;Department of Civil Engineering, Sharif Univ. of Tech., P.O. Box 11365-9313, Azadi Ave., Tehran, Iran;Department of Civil Engineering, Shanghai JiaoTong University, Shanghai 200240, China and Division of Civil Engineering, School of Engineering, Physics and Mathematics, University of Dundee, Dunde ...
Venue:
Applied Soft Computing
Year:
2011

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Abstract

Predictions of long-shore sediment transport rate (LSTR) are a vital task for coastal engineers in the determination of erosion or accretion along coasts. Many scientists have tried to find empirical method for the estimation of LSTR in the past decades. However, due to the influence of significant number of parameters and randomness of the data, the existing empirical methods provide quite different results and have limited applications. In this paper, an alternative approach, fuzzy logic and neural network, is proposed to estimate LSTR. Six dominant variables on LSTR are considered in the present models, including wave breaking height (H"b"s), wave period (T), wave breaking angle (@a"b"s), beach slope (m), grain size (D) and sediment mass flow rate along shore (Q"s). A comprehensive comparison between both neural networks and fuzzy logic models and the existing empirical formulae will be presented to demonstrate capacity of fuzzy logic and artificial neural network.