Long-range interactions in randomly driven granular fluids

Abstract

We study the long-range spatial correlations in the nonequilibrium steady state of a randomly driven granular fluid with the emphasis on obtaining the explicit form of the static structure factors. The presence of immobile particles immersed in such a fluidized bed of fine particles leads to the confinement of the fluctuation spectrum of the hydrodynamic fields, which results in effective long-range interactions between the intruders. The analytical predictions are in agreement with the results of discrete element method simulations. By changing the shape and orientation of the intruders, we address how the effective force is affected by small changes in the boundary conditions.

9 pages, 7 figures

References in corpus (3)

• Fluctuation-Induced Casimir Forces in Granular Fluids
• Ordering phenomena in cooling granular mixtures
• Spatial correlations in sheared isothermal liquids : From elastic particles to granular particles

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• Assessment of kinetic theories for moderately dense granular binary mixtures: Shear viscosity coefficient
• Asymmetric and Long Range Interactions in Shaken Granular Media
• Striped Patterns in Radially Driven Suspensions with Open Boundaries