Conference Proceedings

Probability of occurrence of extreme waves in three dimensional mechanically generated random wave fields: A comparison with numerical simulations

A Toffoli, S Chai, EM Bitner-Gregersen, F Pistani

Volume 2: Structures, Safety and Reliability | ASME | Published : 2011

Abstract

Experimental and numerical investigations reveal that nonlinear modulational instability can significantly affect the probability of occurrence of extreme waves, especially if waves are sufficiently steep and narrow banded both in the frequency and directional domain. However, it is not yet completely clear whether numerical simulations can provide an accurate quantitative estimate of experimental results. Here the potential Euler equations are used to assess the ability of numerical models to describe the evolution of statistical properties of mechanically generated directional, random wave fields and in particular the evolution of the kurtosis. Results show that simulations provide a good ..

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Grants

Awarded by Integrated Infrastructure Initiative HYDRALAB III within the Transnational Access Activities


Awarded by Australian Research Council and Woodside Energy Ltd Linkage


Awarded by F.W.O


Awarded by EXTREME SEAS


Funding Acknowledgements

This work has been supported by European Community's Sixth Framework Programme through the grant to the budget of the Integrated Infrastructure Initiative HYDRALAB III within the Transnational Access Activities, Contract no. 022441(RII3) and the Australian Research Council and Woodside Energy Ltd Linkage project LP0883888. F.W.O. project G.0333.09 and E.U. project EXTREME SEAS (SCP8-GA-2009-234175) are also acknowledged. The authors would like to acknowledge Dr Onorato and Prof Waseda for fruitful discussions.