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Particle approach to a stagnation point at a wall: Viscous damping and collision dynamics

Li, Qing and Abbas, Micheline and Morris, Jeffrey F. Particle approach to a stagnation point at a wall: Viscous damping and collision dynamics. (2020) Physical Review Fluids, 5 (10). ISSN 2469-990X

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Official URL: https://doi.org/10.1103/PhysRevFluids.5.104301

Abstract

Highly resolved numerical simulations by the immersed boundary method are used to study neutrally buoyant spherical particle motion when carried by fluid approaching a wall. The carrying flow studied is the Hiemenz-Homann (HH) axisymmetric straining flow into a stagnation point at a flat rigid wall, with a boundary layer of thickness 3δ = 3√ν/B, with B the strain rate of the flow and ν the kinematic viscosity of the fluid. The pressure in the carrying flow increases on approach to the stagnation point, as a result of the deceleration of the fluid.

Item Type:Article
HAL Id:hal-03117484
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)
French research institutions > Institut national de recherche pour l'agriculture, l'alimentation et l'environnement - INRAE (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > City University of New-York - CUNY (USA)
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Deposited On:21 Jan 2021 10:22

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