The terminal velocity of sedimenting particles in a flowing fluid

被引：15

作者：

Afonso, Marco Martins ^{[1
]}

机构：

[1] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2008年 / 41卷 / 38期

关键词：

D O I：

10.1088/1751-8113/41/38/385501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The influence of an underlying carrier flow on the terminal velocity of sedimenting particles is investigated both analytically and numerically. Our theoretical framework works for a general class of (laminar or turbulent) velocity fields and, by means of an ordinary perturbation expansion at small Stokes number, leads to closed partial differential equations (PDE) whose solutions contain all relevant information on the sedimentation process. The set of PDE is solved by means of direct numerical simulations for a class of 2D cellular flows (static and time dependent) and the resulting phenomenology is analysed and discussed.

引用

页数：15

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