In this paper a new solution for non-linear random wave groups in the presence of a uniform current is obtained, by extending to the second-order the Boccotti’s ‘Quasi- Determinism’ (QD) theory. The second formulation of the QD theory gives the mechanics of linear random wave groups when a large crest-totrough wave height occurs. Here the linear QD theory is firstly applied to the wave-current interaction. Therefore the nonlinear expressions both of free surface displacement and velocity potential are obtained, to the second-order in a Stokes’ expansion. Finally some numerical applications are presented in order to analyze both the wave profile and the wave kinematics.
Non-Linear Random Wave Groups With A Superimposed Current / Nava, V; Arena, F.; Arena, Felice; Romolo, Alessandra. - 2006:(2006), pp. 92477.1-92477.10. (Intervento presentato al convegno 25th International Conference on Offshore Mechanics and Artic Engineering (OMAE 2006) tenutosi a Hamburg, Germany nel June 2006) [10.1115/OMAE2006-92477].
Non-Linear Random Wave Groups With A Superimposed Current
ARENA, Felice;ROMOLO, Alessandra
2006-01-01
Abstract
In this paper a new solution for non-linear random wave groups in the presence of a uniform current is obtained, by extending to the second-order the Boccotti’s ‘Quasi- Determinism’ (QD) theory. The second formulation of the QD theory gives the mechanics of linear random wave groups when a large crest-totrough wave height occurs. Here the linear QD theory is firstly applied to the wave-current interaction. Therefore the nonlinear expressions both of free surface displacement and velocity potential are obtained, to the second-order in a Stokes’ expansion. Finally some numerical applications are presented in order to analyze both the wave profile and the wave kinematics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
