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Jean-Luc Thiffeault

Researcher at University of Wisconsin-Madison

Publications -  155
Citations -  3590

Jean-Luc Thiffeault is an academic researcher from University of Wisconsin-Madison. The author has contributed to research in topics: Braid & Chaotic mixing. The author has an hindex of 34, co-authored 147 publications receiving 3207 citations. Previous affiliations of Jean-Luc Thiffeault include University of Minnesota & Columbia University.

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Optimal stirring strategies for passive scalar mixing

TL;DR: In this article, the authors address the challenge of optimal incompressible stirring to mix an initially inhomogeneous distribution of passive tracers, and derive absolute limits on the total amount of mixing, as a function of time, on a periodic spatial domain with a prescribed instantaneous stirring energy or stirring power budget.
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Stirring by squirmers

TL;DR: In this article, a simple Stokesian squirmer model for the enhanced mixing due to swimming micro-organisms is proposed, where the largest contributions to particle displacement, and hence to mixing, arise from random changes of direction of swimming and are dominated by the far-field stresslet term.
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Using multiscale norms to quantify mixing and transport

TL;DR: In this article, the authors present a multiscale norm for mixing and show how it can be used to optimize the stirring and mixing of a decaying passive scalar in a continuous replenished scalar field, where flows that optimally reduce the norms are associated with transport rather than mixing.
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Detecting coherent structures using braids

TL;DR: This work introduces a topological method for detecting invariant regions based on a small set of trajectories, which regard the two-dimensional trajectory data as a braid in three dimensions, with time being the third coordinate.