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You are here : eLibrary : IAHR World Congress Proceedings : 33rd Congress - Vancouver (2009) : Special Seminars : Wave attack on sea defences potential benefits of a composite modelling approach
Wave attack on sea defences potential benefits of a composite modelling approach
Author : H.F.P. van den Boogaard, H. Gerritsen, S. Caires and M.R.A. van Gent
Design wave loads on a sea defence with a typical sand foreshore are generally determined by means of physical modelling using a fixed bottom and paying no attention to bottom profile uncertainty. The composite modelling approach described here offers a cost-effective and accurate way to account for bottom uncertainty when determining design wave loads. The approach consists in the combination of limited physical model experiments, extensive numerical experiments together with a dedicated error correction facility, and an optimisation procedure. The physical experiments were carried out in the Deltares Scheldt flume and the numerical experiments were made with the Boussinesq-type wave model TRITON. The error correction is based on neural networks, and the optimisation involves the minimisation of a wave load expression. The key to the success of the present composite modelling approach is prior analysis of the model deficiencies and conceptual physical/mathematical characteristics, allowing the determination of a rather accurate and practically efficient error correction model.
File Size : 282,909 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 33rd Congress - Vancouver (2009)
Article : Special Seminars
Date Published : 09/08/2009
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