A Non-Maxwellian Steady Distribution for One-Dimensional Granular Media
نویسندگان
چکیده
0022-4715/98/0600-0979J 15.00/0 © 1998 Plenum Publishing Corporation where £ is the inelasticity parameter and v', v\ and t>, vl are the outgoing and ingoing velocities respectively. This model has many interesting features. First of all it can deliver collapses. For TV =3 it is possible to prove that, if e is larger than some critical value, there is a positive measure set of initial conditions for which the particles perform infinitely many collisions and converge to the same point in a finite time (see refs. 9 and 15). In refs. 4 and 15 the collapse for
منابع مشابه
Steady states of a boltzmann equation for driven granular media
We study a three-dimensional model for driven granular media in which particles interact inelastically while they follow Brownian dynamics in between collisions. A steady Boltzmann-type kinetic equation associated with a pseudo-Maxwellian model is analyzed. Homogeneous steady states are found by a small inelasticity expansion. These states are given by a Maxwellian distribution corrected by the...
متن کاملNumerical Modeling of Non-equilibrium Plasma Discharge of Hydrogenated Silicon Nitride (SiH4/NH3/H2)
In this work, we model a radiofrequency discharge of hydrogenated silicon nitride in a capacitive coupled plasma reactor using Maxwellian and non-Maxwellian electron energy distribution function. The purpose is to investigate whether there is a real advantage and a significant contribution using non-Maxwellian electron energy distribution function rather than Maxwellian one for determining the ...
متن کاملShear viscosity of a model for confined granular media.
The shear viscosity in the dilute regime of a model for confined granular matter is studied by simulations and kinetic theory. The model consists on projecting into two dimensions the motion of vibrofluidized granular matter in shallow boxes by modifying the collision rule: besides the restitution coefficient that accounts for the energy dissipation, there is a separation velocity that is added...
متن کاملExperimental observations of non-equilibrium distributions and transitions in a 2D granular gas
A large number (∼10,000) of uniform stainless steel balls comprising less than one layer coverage on a vertically shaken plate provides a rich system for the study of excited granular media. Viewed from above, the horizontal motion in the layer shows interesting collective behavior as a result of inelastic particleparticle collisions. Clusters appear as localized fluctuations from purely random...
متن کاملM ar 2 00 2 Granular Gases - the early stage
We investigate the evolution of the velocity distribution function of a granular gas composed of viscoelastic particles in the homogeneous cooling state, i.e. before clustering occurs. The deviation of the velocity distribution function from the Maxwellian distribution is quantified by a Sonine polynomials expansion. The first non-vanishing Sonine coefficient a2(t), reveals a complex time depen...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998