Driven and undriven states of multicomponent granular gases of inelastic and rough hard disks or spheres
arXiv:1901.11307 · doi:10.1007/s10035-019-0901-y
Abstract
Starting from a recent derivation of the energy production rates in terms of the number of translational and rotational degrees of freedom, a comparative study on different granular temperatures in gas mixtures of inelastic and rough disks or spheres is carried out. Both the homogeneous freely cooling state and the state driven by a stochastic thermostat are considered. It is found that the relaxation number of collisions per particle is generally smaller for disks than for spheres, the mean angular velocity relaxing more rapidly than the temperature ratios. In the asymptotic regime of the undriven system, the rotational-translational nonequipartition is stronger in disks than in spheres, while it is hardly dependent on the class of particles in the driven system. On the other hand, the degree of component-component nonequipartition is higher for spheres than for disks, both for driven and undriven systems. A study of the mimicry effect (whereby a multicomponent gas mimics the rotational-translational temperature ratio of a monocomponent gas) is also undertaken.
arXiv comment9 pages, 6 figures, v2: New references added. Published in a special issue of Granular Matter in Memoriam of Robert P. Behringer
References in corpus (37)
- Coefficient of restitution of colliding viscoelastic spheres
- Breakdown of Energy Equipartition in a 2D Binary Vibrated Granular Gas
- Computer simulation of uniformly heated granular fluids
- Enskog Theory for Polydisperse Granular Mixtures. I. Navier-Stokes order Transport
- Homogeneous cooling of rough, dissipative particles: Theory and simulations
- NMR Experiments on a Three-Dimensional Vibrofluidized Granular Medium
- Kinetic Temperatures for a Granular Mixture
- Hydrodynamics for a granular binary mixture at low density
- Collisional Granular Flow as a Micropolar Fluid
- Transient structures in a Granular Gas
- Measurements of Grain Motion in a Dense, Three-Dimensional Granular Fluid
- Experimental investigation of the freely cooling granular gas
- Dynamics of inelastically colliding rough spheres: Relaxation of translational and rotational energy
- Velocity distribution of a homogeneously driven two-dimensional granular gas
- Translations and Rotations are correlated in Granular Gases
- Structure factors in granular experiments with homogeneous fluidization
- Negative normal restitution coefficient for nanocluster collisions
- Free Cooling of a Granular Gas in Three Dimensions
- Growing non-equilibrium length in granular fluids: from experiment to fluctuating hydrodynamics
- Role of friction in pattern formation in oscillated granular layers
- Transport coefficients of a granular gas of inelastic rough hard spheres
- Role of roughness on the hydrodynamic homogeneous base state of inelastic spheres
- Navier-Stokes transport coefficients of -dimensional granular binary mixtures at low density
- Sonine approximation for collisional moments of granular gases of inelastic rough spheres
- Energy production rates in fluid mixtures of inelastic rough hard spheres
- Steady state in a gas of inelastic rough spheres heated by a uniform stochastic force
- Partitioning of energy in highly polydisperse granular gases
- Universality of temperature distribution in granular gas mixtures with a steep particle size distribution
- Incorporation of Velocity-dependent Restitution Coefficient and Particle Surface Friction into Kinetic Theory for Modeling Granular Flow Cooling
- Impact of roughness on the instability of a free-cooling granular gas
- Energy nonequipartition in gas mixtures of inelastic rough hard spheres: The tracer limit
- Homogeneous Free Cooling State in Binary Granular Fluids of Inelastic Rough Hard Spheres
- Interplay between polydispersity, inelasticity, and roughness in the freely cooling regime of hard-disk granular gases
- Energy Production Rates of Multicomponent Granular Gases of Rough Particles. A Unified View of Hard-Disk and Hard-Sphere Systems
- Intruders in disguise: Mimicry effect in granular gases
- Granular Rough Sphere in a Low-Density Thermal Bath
- Thermal properties of an impurity immersed in a granular gas of rough hard spheres
Cited by in corpus (9)
- Granular gas of inelastic and rough Maxwell particles
- High-energy velocity tails in uniformly heated granular materials
- Intruders in disguise: Mimicry effect in granular gases
- Hydrodynamics of granular gases of inelastic and rough hard disks or spheres. I. Transport coefficients
- Kinetic Theory and Memory Effects of Homogeneous Inelastic Granular Gases under Nonlinear Drag
- Hydrodynamics of granular gases of inelastic and rough hard disks or spheres. II. Stability analysis
- Mean-squared displacements of rough particles in polydisperse granular gases
- Translational and rotational non-Gaussianities in homogeneous freely evolving granular gases
- Mpemba-like effect protocol for granular gases of inelastic and rough hard disks