Experiment on Vibration-Induced Pattern Formation of a Vertically Thin Granular Layer(Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics and Fluid Mechanics)
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概要
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An experimental study was made to elucidate the effect of three dimensionality of particle dynamics as well as the number of layers necessary for the pattern formation in vibrating granular layer. We observed "ripple" and "undulation" of various modes in a container whose separation distance of the vertical walls was as small as one particle diameter size, and obtained the critical number of layers about three for the formation of these patterns. Particle trajectories were traced, which revealed eight-figured motion of particles in ripple patterns. On the other hand, configuration change of densely packed particles at the time of impingement on the bottom of the container was found to be characteristic of undulation patterns.
- 社団法人日本物理学会の論文
- 2005-05-15
著者
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Sano Osamu
Tokyo Univ. Agriculture And Technol. Tokyo
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Sano Osamu
Department Of Applied Physics Tokyo University Of Agriculture And Technology
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KANAI Kenichi
Department of Applied Physics, Tokyo University of Agriculture and Technology
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UGAWA Akiko
Department of Applied Physics, Tokyo University of Agriculture and Technology
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Sano Osamu
Department Of Applied Physics Faculty Of Engineering University Of Tokyo
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Ugawa Akiko
Department Of Applied Physics Tokyo University Of Agriculture And Technology
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Kanai Kenichi
Department Of Applied Physics Tokyo University Of Agriculture And Technology
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Sano Osamu
Department Mining and Mineral Engineering
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