Enhanced rise of rogue waves in slant wave groups
V. P. Ruban
L.D. Landau Institute for Theoretical Physics RAS, 119334 Moscow, Russia
Abstract
Numerical simulations of fully nonlinear equations of motion for long-crested
waves at deep water demonstrate that in elongate wave groups the formation of
extreme waves occurs most intensively if in an initial state the wave fronts
are oriented obliquely to the direction of the group. An "optimal" angle,
resulting in the highest rogue waves, depends on initial wave amplitude and
group width, and it is about 18-28 degrees in a practically important range
of parameters.