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Drag-model sensitivity of Kelvin-Helmholtz waves in canopy flows

Luminari, Nicola and Airiau, Christophe and Bottaro, Alessandro Drag-model sensitivity of Kelvin-Helmholtz waves in canopy flows. (2016) Physics of Fluids, 28 (12). 124103. ISSN 1070-6631

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Official URL: http://dx.doi.org/10.1063/1.4971789

Abstract

Two models of the flow over and through an immersed, vegetated layer are examined to study the onset of instability waves across the layer and to assess the effect of mild variations in the mean flow and in the drag force exerted by the canopy onto the frequency and growth rate of the monami instability. One of the two models, based on the use of Darcy’s equation, with a tensorial permeability, within the canopy is more robust than the other (which uses a scalar drag coefficient), i.e., it is less sensitive to the inevitable imperfections or approximations in the input data.

Item Type:Article
HAL Id:hal-01597197
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:28 Sep 2017 09:10

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