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Physics Event · · ·

Physics Colloquium: Prof. Jean-Luc Thiffeault, Dept of Mathematics at the University of Wisconsion

Date and Time: Wednesday, March 19, 2014 at 4:15 PM (CDT)
Location: RLM 4.102

Physics Colloquium

Prof. Jean-Luc Thiffeault, Dept of Mathematics at the University of Wisconsion

"The Topology of Fluid Mixing"

4:15pm, The John A. Wheeler Lecture Hall (RLM 4.102).

Coffee and cookies will be served at 4:00pm in RLM 4.102

Abstract:

Topological chaos is a type of chaotic behavior that is forced by the motion of obstacles in some domain. 'Taffy pullers' are a classic example. I will review two approaches to topological chaos, with applications in particular to stirring and mixing in fluid dynamics. The first approach involves constructing devices where the fluid motion is topologically complex, usually by imposing a specific motion of stirring rods. I will then discuss optimization strategies that can be implemented. The second approach is diagnostic, where flow characteristics are deduced from observations of periodic or random orbits and their topological properties.

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