On particle incipient motion from the sedimentation layer in shear flow

Autor:	A. V. Seryakov, Ya S. Ignatenko, O. B. Bocharov
Rok vydání:	2019
Předmět:	Physics::Fluid Dynamics History Materials science Sedimentation (water treatment) Particle Motion (geometry) Mechanics Shear flow Layer (electronics) Computer Science Applications Education
Zdroj:	Journal of Physics: Conference Series. 1404:012040
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/1404/1/012040
Popis:	This paper presents the results of numerical modelling for a laminar flow around a spherical particle located near a sedimentation layer. The particle being at the minimum distance from the rough layer is affected by a fluid shear flow with Reynolds numbers varying from 2 to 200. The considered fluids included Newtonian and power law ones. Depending on a shear Reynolds number, the critical Shields numbers have been determined to describe the particle’s incipient motion. The obtained parameters have been compared against those for a smooth surface to demonstrate that in some cases the differences in critical stress coefficients may reach up to 70%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e8f9489cc48e5a3b5825809d038f4413 https://doi.org/10.1088/1742-6596/1404/1/012040 Zobrazit plný text záznamu