EVENTO
Nonlinear-Optics-like Behaviour in Water Waves
Tipo de evento: Seminário LNCC
A sufficiently high intensity beam of light in a medium whose refractive index is intensity dependent (such as air or water) will exhibit self focussing until higher order effects, noise, or plasma generation come into play. The cross-sectional profile of the focussed beam depends interestingly on the initial intensity profile. Surprisingly, a very similar phenomenon occurs (for somewhat different reasons) in a patch of water ripples, until nonlinearity arrests the focussing, and the patch breaks up into a complex set of localised structures. We will show simulations of this effect in the 3D free surface Euler equations. Whilst water may be too viscous for the phenomena to be observed, computations suggest that the behaviour should be observable in some different fluid settings.
Data Início: 09/12/2013 Hora: 14:00 Data Fim: Hora: 14:30
Local: LNCC - Laboratório Nacional de Computação Ciêntifica - Auditorio A
Comitê Organizador: Paul Milewski - Department of Mathematical Sciences, University of Bath - UK - -