Statistics of wave orbital velocity in deep water random directional wave fields

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/236505

Title: Statistics of wave orbital velocity in deep water random directional wave fields
Author(s): Toffoli, A.; Bitner-Gregersen, E. M.; Suslov, Sergey A.; Onorato, M.
Abstract: A direct numerical simulation method is used to monitor the evolution of nonlinear random directional wave fields. The aim is to investigate the combined effect of high order nonlinearity and directional energy distribution on the statistics of wave orbital velocity. Results show that the development of modulational wave instability and the concurrent formation of large amplitude waves lead to a substantial departure of the statistics of the horizontal velocity from the Normal probability density function when the wave field is long crested. As short crestedness increases, departure from Normality gradually diminishes and eventually vanishes for sufficiently broad directional spreading.
Publication type: Conference paper
Research centre: Swinburne University of Technology
Source: Proceedings of the 31st International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2012), Rio de Janeiro, Brazil, 01-06 July 2012, paper no. 2012-83826
Publication year: 2012
Keyword(s): Directional wave fields; Ocean engineering; Statistics; Wave orbital velocity
Publisher: American Society of Mechanical Engineers
Publisher URL: http://www.asmeconferences.org/omae2012
Peer reviewed