Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Reyes, F. Vega"'
Publikováno v:
Entropy 2022, 24(11), 1684
We study an air-fluidized granular monolayer, composed of plastic spheres which roll on a metallic grid. The air current is adjusted so that the spheres never loose contact with the grid, so that the dynamics may be regarded as pseudo two-dimensional
Externí odkaz:
http://arxiv.org/abs/2209.10924
Autor:
López-Castaño, M. A., González-Saavedra, J. F., Rodríguez-Rivas, A., Abad, E., Yuste, S. B., Reyes, F. Vega
Publikováno v:
Phys. Rev. E 103, 042903 (2021)
We study in this work the dynamics of a collection of identical hollow spheres (ping-pong balls) that rest on a horizontal metallic grid. Fluidization is achieved by means of a turbulent air current coming from below. The upflow is adjusted so that t
Externí odkaz:
http://arxiv.org/abs/2006.15133
Publikováno v:
Phys. Fluids 33, 062005 (2021)
We study a granular gas of viscoelastic particles (kinetic energy loss upon collision is a function of the particles' relative velocities at impact) subject to a stochastic thermostat. We show that the system displays anomalous cooling and heating ra
Externí odkaz:
http://arxiv.org/abs/2006.00241
Publikováno v:
J. Fluid Mech. 859, pp. 160-173 (2019)
We theoretically prove the existence in granular fluids of a thermal convection that is inherent, in the sense that is always present and has no thermal gradient threshold (convection occurs for all finite values of the Rayleigh number). More specifi
Externí odkaz:
http://arxiv.org/abs/1707.04225
Publikováno v:
Phys. Rev. E 92, 052205 (2015)
We study in this work a steady shearing laminar flow with null heat flux (usually called "uniform shear flow") in a gas-solid suspension at low density. The solid particles are modeled as a gas of smooth hard spheres with inelastic collisions while t
Externí odkaz:
http://arxiv.org/abs/1507.01966
Publikováno v:
Phys. Rev. E 89, 020202(R) (2014)
A gas of inelastic rough spheres admits a spatially homogeneous base state which turns into a hydrodynamic state after a finite relaxation time. We show that this relaxation time is hardly dependent on the degree of inelasticity but increases dramati
Externí odkaz:
http://arxiv.org/abs/1309.2369
Publikováno v:
Phys. Rev . E 87, 032201 (2013)
The transport coefficients of a granular fluid driven by a stochastic bath with friction are obtained by solving the inelastic Enskog kinetic equation from the Chapman-Enskog method. The heat and momentum fluxes as well as the cooling rate are determ
Externí odkaz:
http://arxiv.org/abs/1211.4985
Publikováno v:
J. Fluid Mech. 719, 431-464 (2013)
We study in this work steady laminar flows in a low density granular gas modelled as a system of identical smooth hard spheres that collide inelastically. The system is excited by shear and temperature sources at the boundaries, which consist of two
Externí odkaz:
http://arxiv.org/abs/1203.0266
Publikováno v:
J. Stat. Mech., P07005 (2011)
We present in this work results from numerical solutions, obtained by means of the direct simulation Monte Carlo (DSMC) method, of the Boltzmann and Boltzmann--Lorentz equations for an impurity immersed in a granular gas under planar Couette flow. Th
Externí odkaz:
http://arxiv.org/abs/1105.1742
Autor:
Reyes, F. Vega, Urbach, J. S.
Publikováno v:
J. Fluid Mech. vol. 636, pp. 279-293 (2009)
We study the Navier-Stokes steady states for a low density monodisperse hard sphere granular gas (i.e, a hard sphere ideal monatomic gas with inelastic interparticle collisions). We present a classification of the uniform steady states that can arise
Externí odkaz:
http://arxiv.org/abs/0807.5125