Session EM: Separated Flows III
4:10 PM–6:46 PM, Sunday, November 20, 2005
Hilton Chicago Room: PDR 2
Chair: Hamid Johari, Worcester Polytechnic Institute
Abstract ID: BAPS.2005.DFD.EM.3
Abstract: EM.00003 : Nonlinear Theory of Three-Dimensional Separation
4:36 PM–4:49 PM
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Abstract 
Author:
George Haller
(MIT)
In this talk, I describe a recent theory of steady and unsteady three-dimensional separation. The theory provides analytic criteria for the location and shape of separation surfaces emanating from a no-slip boundary of a three-dimensional flow. We construct these surfaces as nonhyperbolic unstable manifolds using nonlinear dynamical systems methods. I show applications of the theory to direct numerical simulations of a backward-facing step flow and of a lid-driven cavity flow. I also mention related two-dimensional experiments and applications to separation control.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2005.DFD.EM.3