Granular dynamics of a vibrated bed of dumbbells
Granular dynamics of a vibrated bed of dumbbells
复制标题
哑铃振动床的颗粒动力学
DOI:
10.1140/epjst/e2010-01189-y
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
Wildman R
中科院分区:
文献类型:
--
作者:
Wildman R
A two-dimensional vibrated bed of dumbbells was investigated using experiment and numerical simulation. Experimentally, high speed photography in combination with image analysis and tracking software was used to determine the location of the centre of mass and the locations and direction of motion of the component particles of the dumbbells. Numerically, a geometry analogous to that used experimentally was employed and the equations of motion for each of the particles were solved using the distinct element method. It was found that, despite some differences, the numerical simulations agreed reasonably well with the experimental results. Subsequently, the simulation method was used to explore the behaviour of the bed over a range of densities. The moments of the velocity distributions were determined as a function of height for a range of numbers of particles, and it was found that a normal distribution of velocities is a good approximation, except close to the vibrating base where there were suggestions that the distribution of the vertical component of the velocities is a composite of two sets of particles, one pre-collision with the base, and the other post-collision.
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DOI:
10.1103/physreve.52.5583
发表时间:
1995-11
期刊:
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
影响因子:
--
作者:
Warr;Huntley;Jacques
通讯作者:
Warr;Huntley;Jacques
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
R. Wildman;J. M. Huntley
通讯作者:
J. M. Huntley
DOI:
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发表时间:
2006
期刊:
影响因子:
--
作者:
R. Wildman;J. Jenkins;P. Krouskop;J. Talbot
通讯作者:
J. Talbot
影响因子:
8.6
作者:
Falcon, É;Wunenburger, R;Beysens, D
通讯作者:
Beysens, D
DOI:
--
发表时间:
2002
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
S. R. Dahl;C. Hrenya;V. Garzó;J. Dufty
通讯作者:
J. Dufty