Localized shear generates three-dimensional transport
Abstract
Understanding the mechanisms that control three-dimensional (3D) fluid transport is central to many processes including mixing, chemical reaction and biological activity. Here a novel mechanism for 3D transport is uncovered where fluid particles are kicked between streamlines near a localized shear, which occurs in many flows and materials. This results in 3D transport similar to Resonance Induced Dispersion (RID); however, this new mechanism is more rapid and mutually incompatible with RID. We explore its governing impact with both an abstract 2-action flow and a model fluid flow. We show that transitions from one-dimensional (1D) to two-dimensional (2D) and 2D to 3D transport occur based on the relative magnitudes of streamline jumps in two transverse directions.
Cite
@article{arxiv.1608.02889,
title = {Localized shear generates three-dimensional transport},
author = {Lachlan D. Smith and Murray Rudman and Daniel R. Lester and Guy Metcalfe},
journal= {arXiv preprint arXiv:1608.02889},
year = {2017}
}
Comments
Copyright 2017 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing