271 citations · 827 across the 32 of their papers we have counts for
20 papers · 1 filter
Fluctuations, correlations, and Casimir-like forces in the homogeneous cooling state of a granular gas
Jesús David Jiménez Oliva, Pablo Rodriguez-Lopez, Nagi Khalil
The fluctuating hydrodynamics by Brey et. al. is analytically solved to get the long-time limit of the fluctuations of the number density, velocity field, and energy density around…
Approach to consensus in models of continuous-opinion dynamics: a study inspired by the physics of granular gases
Nagi Khalil
A model for continuous-opinion dynamics is proposed and studied by taking advantage of its similarities with a mono-dimensional granular gas. Agents interact as in the Deffuant mod…
Mpemba-like effect in driven binary mixtures
Rubén Gómez González, Nagi Khalil, Vicente Garzó
The Mpemba effect occurs when two samples at different initial temperatures evolve in such a way that the temperatures cross each other during the relaxation towards equilibrium. I…
Enskog kinetic theory for multicomponent granular suspensions
Rubén Gómez González, Nagi Khalil, Vicente Garzó
The Navier--Stokes transport coefficients of multicomponent granular suspensions at moderate densities are obtained in the context of the (inelastic) Enskog kinetic theory. The sus…
Unified hydrodynamic description for driven and undriven inelastic Maxwell mixtures at low density
Nagi Khalil, Vicente Garzó
A hydrodynamic description for inelastic Maxwell mixtures driven by a stochastic bath with friction is derived. Contrary to previous works where constitutive relations for the flux…
Mesoscopic description of the adiabatic piston: kinetic equations and -theorem
Nagi Khalil
The adiabatic piston problem is solved at the mesoscale using a Kinetic Theory approach. The problem is to determine the evolution towards equilibrium of two gases separated by a w…
Mass transport of driven inelastic Maxwell mixtures
Nagi Khalil, Vicente Garzó
Mass transport of a driven granular binary mixture is analyzed from the inelastic Boltzmann kinetic equation for inelastic Maxwell models (IMM). The mixture is driven by a thermost…
First-passage distributions for the one-dimensional Fokker-Planck equation
Oriol Artime, Nagi Khalil, Raul Toral +1
We present an analytical framework to study the first-passage (FP) and first-return (FR) distributions for the broad family of models described by the one-dimensional Fokker-Planck…
Heat flux of driven granular mixtures at low density. Stability analysis of the homogeneous steady state
Nagi Khalil, Vicente Garzó
The Navier--Stokes order hydrodynamic equations for a low-density driven granular mixture obtained previously [Khalil and Garzó, Phys. Rev. E \textbf{88}, 052201 (2013)] from the C…
Generalized time evolution of the homogeneous cooling state of a granular gas with positive and negative coefficient of normal restitution
Nagi Khalil
The homogeneous cooling state (HCS) of a granular gas described by the inelastic Boltzmann equation is reconsidered. As usual, particles are taken as inelastic hard disks or sphere…
Heat flux of a granular gas with homogeneous temperature
Nagi Khalil
A steady state of a granular gas with homogeneous granular temperature, no mass flow, and nonzero heat flux is studied. The state is created by applying an external position--depen…
Anomalous transport of impurities in inelastic Maxwell gases
Vicente Garzó, Nagi Khalil, Emmanuel Trizac
A mixture of dissipative hard grains generically exhibits a breakdown of kinetic energy equipartition. The undriven and thus freely cooling binary problem, in the tracer limit wher…
Homogeneous states in driven granular mixtures: Enskog kinetic theory versus molecular dynamics simulations
Nagi Khalil, Vicente Garzó
The homogeneous state of a binary mixture of smooth inelastic hard disks or spheres is analyzed. The mixture is driven by a thermostat composed by two terms: a stochastic force and…
Dynamical arrest: interplay of the glass and of the gel transitions
Nagi Khalil, Antonio Coniglio, Antonio de Candia +2
The structural arrest of a polymeric suspension might be driven by an increase of the cross--linker concentration, that drives the gel transition, as well as by an increase of the…
Transport coefficients for driven granular mixtures at low-density
Nagi Khalil, Vicente Garzó
The transport coefficients of a granular binary mixture driven by a stochastic bath with friction are determined from the inelastic Boltzmann kinetic equation. A normal solution is…
Hydrodynamic granular segregation induced by boundary heating and shear
Francisco Vega Reyes, Vicente Garzó, Nagi Khalil
Segregation induced by a thermal gradient of an impurity in a driven low-density granular gas is studied. The system is enclosed between two parallel walls from which we input ther…
Thermal segregation of intruders in the Fourier state of a granular gas
J. Javier Brey, Nagi Khalil, James W. Dufty
A low density binary mixture of granular gases is considered within the Boltzmann kinetic theory. One component, the intruders, is taken to be dilute with respect to the other, and…
Equilibration and symmetry breaking in vibrated granular systems
J. Javier Brey, Nagi Khalil
The steady states of two vibrated granular gases separated by an adiabatic piston are investigated. The system exhibits a non-equilibrium phase transition with an spontaneous symme…
Thermal Segregation Beyond Navier-Stokes
J. Javier Brey, Nagi Khalil, James W. Dufty
A dilute suspension of impurities in a low density gas is described by the Boltzmann and Boltzman-Lorentz kinetic theory. Scaling forms for the species distribution functions allow…
Critical behavior of two freely evolving granular gases separated by an adiabatic piston
J. Javier Brey, Nagi Khalil
Two granular gases separated by an adiabatic piston and initially in the same macroscopic state are considered. It is found that a phase transition with an spontaneous symmetry bre…