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Direct numerical simulation of particles in a fluid interacting with a wall
Author(s) -
Lechner Christiane,
Kuhlmann Hendrik C.
Publication year - 2011
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201110232
Subject(s) - drag , mechanics , cylinder , immersed boundary method , context (archaeology) , particle (ecology) , smoothed particle hydrodynamics , direct numerical simulation , wafer , classical mechanics , physics , materials science , boundary (topology) , mechanical engineering , nanotechnology , geology , engineering , turbulence , mathematics , mathematical analysis , paleontology , oceanography , reynolds number
We develop a code to be applied in the context of the cleaning of wafer surfaces by hydrodynamic forces. Our goal is to study the detachment of (submicron) particles, exposed to a shear flow, from a wall by means of direct numerical simulation. The particles are treated as rigid bodies fully interacting with the fluid. To simulate moving particles in the fluid we implement an immersed boundary method with direct forcing into OpenFOAM. The particle‐wall interaction is treated with a soft contact model. As first simple examples we study the elastic normal impact of a cylinder onto a wall as well as the onset of sliding of a cylinder pressed to a horizontal wall by gravity under a time‐depended drag force. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)