multiphase flow

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  Equation of state for random sphere packings with

  The packings of non-adhesive granular matter have been extensively studied, with two well-known packing limits identified as the Random Close Packing (RCP) and the Random Loose Packing (RLP). However, for micron-sized particles, the presence of adhesive interactions such as van der Waals forces could intrinsically change ...

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  Effect of long-range repulsive Coulomb interaction

  Different from the short-range van der Waals interactions, the electrostatic forces can exert their influence across a much longer distance, which cause profound changes in the structure of a particulate system and offer the ability to manipulate particles at the microscales. One of these electrokinetic phenomena related ...

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  Fine Adhesive Particles on a Fiber

  The impaction-sticking mechanism of fine particulates plays a significant role in a wide range of applications from dust separation device, thin-film deposition technique to astrophysics science, but the underlying physics is less clarified. In this paper, a discrete element (DEM) method approach is established to investigate...

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  The mechanism of pore clogging of micro-particles

  Pore clogging caused by microscale particles exists universally in various engineering processes, including transport of biological cells, aerosol filtration, assay applications of colloidal particles, and microreactors. We perform computer simulations based on adhesive contact mechanics to demonstrate the clogging process of...

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  Granular materials in spouted beds

  Two-dimensional spouted bed, capable to provide both dilute granular gas and dense granular solid flow patterns in one system, was selected as a prototypical system for studying granular materials. Effects of liquid cohesion on such kind of complex granular patterns were studies for the first time, using particle image veloci...

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  Particle dynamics in electrostatic fields

  A discrete-element method is developed for applications involving interaction of spherical particles with a body of arbitrary shape in an electrostatic field. The electric field is induced both by charged particles and by other ‘macroscopic’ bodies (e.g. electrodes). The electric field due to macroscopic bodies is co...

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