SEDIMENTATION OF CIRCULAR PARTICLES IN OLDROYD-B FLUID

被引：0

作者：

Shao Xue-ming ^{[1
]}

Yu Zhao-sheng ^{[2
]}

机构：

[1] Zhejiang Univ, Dept Mech, Hangzhou 310027, Zhejiang, Peoples R China

[2] Univ Sydney, Dept Mech & Mechatron Engn, Sydney, NSW 2006, Australia

来源：

JOURNAL OF HYDRODYNAMICS | 2004年 / 16卷 / 03期

基金：

中国国家自然科学基金;

关键词：

sedimentation; circular particle; Distributed Lagrange Multiplier/fictitious domain (DLM) method; viscoelastic fluid;

D O I：

暂无

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The sedimentation of circular particles in a vertical channel filled with Oldroyd - B fluid was studied by an improved Distributed Lagrange Multiplier/fictitious domain (DLM) method. The sedimenting behaviors of two particles are presented firstly, which shows that, when the particles are dropped in a viscoealstic fluid, the stable configuration is the one where the particles are aligned parallel to the flow direction when the Mach number M is less than 1 and the elasticity number E is greater than 1. This agrees well with the known experimental in Ref. [1] and simulation results in Ref. [2]. Our simulations also show that, as in Newtonian fluid, the sedimentation of the particles will be accelerated due to the interaction between particles in a viscoealstic fluid.

引用

页码：254 / 259

页数：6

共 50 条

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