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Wake-induced oscillatory paths of bodies freely rising or falling in fluids

Ern, Patricia and Risso, Frédéric and Fabre, David and Magnaudet, Jacques Wake-induced oscillatory paths of bodies freely rising or falling in fluids. (2012) Annual Review of Fluid Mechanics, 44 (1). 97-121. ISSN 0066-4189

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Official URL: http://dx.doi.org/10.1146/annurev-fluid-120710-101250

Abstract

Leaves falling in air and bubbles rising in water provide daily examples of nonstraight paths associated with the buoyancy-driven motion of a body in a fluid. Such paths are relevant to a large variety of applicative fields such as mechanical engineering, aerodynamics, meteorology, and the biomechanics of plants and insect flight. Although the problem has attracted attention for ages, it is only recently that the tremendous progress in the development of experimental and computational techniques and the emergence of new theoretical concepts have led to a better understanding of the underlying physical mechanisms. This review attempts to bring together the main recent experimental, computational, and theoretical advances obtained on this fascinating subject. To this end it describes the first steps of the transition in the wake of a fixed body and its connection with the onset and development of the path instability of moving bodies. Then it analyzes the kinematics and dynamics of various types of bodies along typical nonstraight paths and how the corresponding information can be used to build low-dimensional predictive models.

Item Type:Article
Additional Information:Thanks to Annual Reviews editor. The original PDF can be found at http://www.annualreviews.org/doi/abs/10.1146/annurev-fluid-120710-101250
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 - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Patricia ERN
Deposited On:15 Nov 2013 14:18

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