The Dynamics of Finite-size Settling Particles de Todor Doychev

The Dynamics of Finite-size Settling Particles

Todor Doychev

This book contributes to the fundamental understanding of the physical mechanisms that take place in pseudo turbulent particulate flows. In the present work we have considered the sedimentation of large numbers of spherical rigid particles in an initially quiescent flow field. We have performed direct numerical simulations employing an immersed boundary method for the representation of the fluid-solid interface. The results evidence that depending on the particle settling regime (i.e. Galileo number and particle-to-fluid density ratio) the particles may exhibit strong inhomogeneous spatial distribution. It is found that the particles are preferentially located in regions with downward fluid motion. The particles inside clusters experience larger settling velocities than the average. The flow in all flow cases is observed to exhibit characteristic features of pseudo-turbulence. The particle-induced flow field is further found to be highly anisotropic with dominant vertical components. The results indicate that, in the present flow configurations, the collective and mobility effects play significant role for the particle and fluid motion.

This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.

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	Preț	Express
Paperback (1)	468^.84 lei 38-44 zile
Saint Philip Street Press – 8 oct 2020	468^.84 lei 38-44 zile
Hardback (1)	543^.88 lei 38-44 zile
Saint Philip Street Press – 8 oct 2020	543^.88 lei 38-44 zile

Preț

Express

Paperback (1)

468^.84 lei 38-44 zile

Saint Philip Street Press – 8 oct 2020

468^.84 lei 38-44 zile

Hardback (1)

543^.88 lei 38-44 zile

Saint Philip Street Press – 8 oct 2020

543^.88 lei 38-44 zile