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arXiv · 1707.07558

Absolute/convective secondary instabilities and the role of confinement in free shear layers

Cristobal Arratia·Saviz Mowlavi·Francois Gallaire
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Abstract

Mixing layers can grow in time or space by vortex pairings that succeed each other in a nearly self-similar way. We use a point vortex model to study how confinement eventually limits this growth process, leading us to propose a wavelength selection mechanism for free shear layers with counterflow.

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Cristobal Arratia, Saviz Mowlavi, Francois Gallaire. 2018-05-07. Absolute/convective secondary instabilities and the role of confinement in free shear layers. https://doi.org/10.1103/physrevfluids.3.053901

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