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We consider a dense granular shear flow in a two-dimensional system. Granular systems
(composed of a large number of macroscopic particles) are far from equilibrium due to
inelastic collisions between particles: an external driving is needed to maintain the
motion of particles. Theoretical description of driven granular media is especially
challenging for dense granular flows. This paper focuses on a gravity-driven dense
granular Poiseuille flow...
Consider the dynamics of a thin film flowing down an inclined plane under the action of gravity and in the presence of a first-order exothermic chemical reaction. The heat released by the reaction induces a thermocapillary Marangoni instability on the film surface while the film evolution affects the reaction by influencing heat/mass transport through convection. The main parameter characterizing the reaction-diffusion process is the Damköhler number. We investigate the complete range of Damköhler...
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