Date: 03/27/09

Speaker: A. Tao

Title: Long time water wave evolution and Freak waves

Abstract:
Freak wave has gained more attention for its unclear generation mechanism,
kinematic and dynamic characteristics and occurrence probability. Under the presumptions
of potential flow, no current, no wind, deep water and 2-D space, this talk will try to
interpret the generation mechanism and the relation between the occurrence probability of
Freak waves and the initial conditions. You will see the characteristics of Freak waves
changing with varying timescale and varying initial conditions. The initial conditions of
water wave include one component, carrier wave with imposed sidebands, carrier wave with
white noise and Jonswap Spectrum with varying BFI. And the influence of dissipation
induced by viscosity will be discussed.