Simulations of vibrated granular medium with impact-velocity-dependent restitution coefficient
نویسندگان
چکیده
منابع مشابه
Simulations of vibrated granular medium with impact-velocity-dependent restitution coefficient.
We report numerical simulations of strongly vibrated granular materials designed to mimic recent experiments performed in both the presence and the absence of gravity. The coefficient of restitution used here depends on the impact velocity by taking into account both the viscoelastic and plastic deformations of particles, occurring at low and high velocities, respectively. We show that this mod...
متن کاملGranular Gases with Impact-velocity Dependent Restitution Coefficient
We consider collisional models for granular particles and analyze the conditions under which the restitution coefficient might be a constant. We show that these conditions are not consistent with known collision laws. From the generalization of the Hertz contact law for viscoelastic particles we obtain the coefficient of normal restitution ǫ as a function of the normal component of the impact v...
متن کاملSimulations of dense granular gases without gravity with impact-velocity-dependent restitution coefficient
We report two-dimensional simulations of strongly vibrated granular materials without gravity. The coefficient of restitution depends on the impact velocity between particles by taking into account both the viscoelastic and plastic deformations of particles, occurring at low and high velocities respectively. Use of this model of restitution coefficient leads to new unexpected behaviors. When th...
متن کاملSimulations of dense granular gases in zero gravity with impact-velocity-dependent restitution coefficient
We report two-dimensional simulations of strongly vibrated granular materials in zero gravity. The coefficient of restitution depends on the impact velocity between particles by taking into account both the viscoelastic and plastic deformations of particles, occurring at low and high velocities respectively. Use of this realistic restitution coefficient leads to new unexpected behaviors. When t...
متن کاملLong-time behavior of Granular Gases with impact-velocity dependent coefficient of restitution
A gas of particles which collide inelastically if their impact velocity exceeds a certain value is investigated. In difference to common granular gases, cluster formation occurs only as a transient phenomenon. We calculate the decay of temperature due to inelastic collisions. In spite of the drastically reduced dissipation at low temperature the temperature surprisingly converges to zero.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review E
سال: 2005
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.71.031302