Collective Dynamics of Particles by Cristian Marchioli

Author:Cristian Marchioli
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

The very definition of a slip velocity with respect to the fluid and consequential particle Reynolds number is difficult.

The energy dissipation rate is increased very close the particle while it can be reduced in the wake.

Large and small scale turbulent fluctuations lead to an increase of the drag force on the particle.

Particles with even steady wakes can sediment under gravity on non-vertical paths.

Let us now list collective effects arising from the mentioned finite-size effects:A particle entrains fluid in its wake that can reduce the drag force on a trailing particle. This is called the wake attraction effect.

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