Rogue Waves in Oceanic Turbulence and Vortices in Axisymmetric Pipe Turbulence: An Exteme View
Dr. Francesco FedeleAssistant Professor, Georgia Institute of Technology Savannah
Date: Wednesday, December 5, 2007 at 12:00 PM
Room: PARB 126
Abstract
In the first part of talk, a stochastic model of wave groups is presented to explain the formation of abnormal waves (rogue waves) in oceanic turbulence. The latter state is defined as the chaotic behavior of a sea of weakly nonlinear coupled dispersive waves in evolution according to the Zakharov equation. Finally, the stochastic wave group theory is extended to characterize the axis-symmetric pipe turbulence. Under certain limiting fluid conditions, the latter state can be defined as the chaotic behavior of a sea of strongly/weakly nonlinear coupled Cnoidal waves obeying a system of Korteweg-de Vries Equations.
