Seminar: Self-sustained Processes in Shear Flows and Turbulence

Seminar: Self-sustained Processes in Shear Flows and Turbulence

April 19th, 2013

11 a.m. - noon
Engineering West (EG 36), Room 187
FAU Boca Raton campus
with videoconferencing to the FAU Dania Beach campus, SeaTech, Room 250

Guest Speaker:
Philip Hall, PhD
Director
The Mathematical Sciences Research Institute
Imperial College, University of London

Abstract
Self-sustained processes involving coherent vortex structures in fully turbulent flows that maintain turbulence are described and explained using a vortex-wave interaction (WVI) theory. This asymptotic theory reduces the Navier-Stokes equations of fluid motion to the boundary-region equations for which we find equilibrium states describing the change in the VWI as the wavelength of the waves increase from O(1) to O(R) where R is the Reynolds number. The relevance of the results to control of turbulent flows will be discussed.