Droplet and cluster formation in freely falling granular streams
نویسندگان
چکیده
منابع مشابه
Droplet and cluster formation in freely falling granular streams.
Particle beams are important tools for probing atomic and molecular interactions. Here we demonstrate that particle beams also offer a unique opportunity to investigate interactions in macroscopic systems, such as granular media. Motivated by recent experiments on streams of grains that exhibit liquid-like breakup into droplets, we use molecular dynamics simulations to investigate the evolution...
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The discharge of grains from a hopper or silo has received considerable attention, both because it is relevant to numerous industries, and a model system for examining general features of granular flow [1, 2]. These studies have generally focused on the motion of grains inside the hopper and the flow rate of material out of the nozzle. It is known that these systems can exhibit intermittent jam...
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This paper investigates a clustering instability of a freely falling granular jet composed of 100 microm glass spheres. The granular flow out of a circular nozzle starts out spatially uniform and then, further downstream, breaks up into well-defined clusters. An optical method is used that measures inhomogeneities in the flow in order to quantify the growth of the clusters. The role of air is i...
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When dissipative particles are left alone, their fluctuation energy decays due to collisional interactions, clusters build up and grow with time until the system size is reached. When the effective dissipation is strong enough, this may lead to the " inelastic collapse " , i.e. the divergence of the collision frequency of some particles. The cluster growth is an interesting physical phenomenon,...
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Numerous studies have used ground-based, freely falling, isolated droplets to study the combustion behavior of liquid fuels, fuel emulsions, and liquid-solid slurries (Sangiovanni and Labowsky, Combust. Flame, 1982; Choi et al, 23rd Symp. (Int’l.) on Comb., 1990; Lee and Law, Comb. Sci. Tech., 1992). Droplets of mono-disperse size formed repetitively are projected down a duct flow oriented para...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2011
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.83.051302