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Particle accumulation in high‐Prandtl‐number liquid bridges
Author(s) -
Barmak Ilya,
Romanò Francesco,
Kuhlmann Hendrik C.
Publication year - 2019
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201900058
Subject(s) - prandtl number , particle (ecology) , drag , cluster (spacecraft) , physics , mechanics , classical mechanics , magnetosphere particle motion , dissipation , convection , thermodynamics , magnetic field , oceanography , quantum mechanics , computer science , programming language , geology
Particle accumulation in high‐Prandtl‐number (Pr = 68) thermocapillary liquid bridges is studied numerically. Randomly distributed small rigid non‐interacting spherical particles are found to cluster in particle accumulation structures. The accumulation is found to be caused by a finite‐particle‐size effect when the particles move close to the impermeable flow boundaries. The extra drag force experienced by a particle near the boundaries creates a dissipation in the dynamical system describing the particle motion. This causes particles to be attracted to regions in or near Kolmogorov‐Arnold‐Moser tori of the unperturbed flow field.