Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Lattice Boltzmann modeling of particle inertial migration in a curved channel

Sun Dong-Ke Xiang Nan Chen Ke Ni Zhong-Hua

Lattice Boltzmann modeling of particle inertial migration in a curved channel

Sun Dong-Ke, Xiang Nan, Chen Ke, Ni Zhong-Hua
PDF
Get Citation

(PLEASE TRANSLATE TO ENGLISH

BY GOOGLE TRANSLATE IF NEEDED.)

Metrics
  • Abstract views:  1685
  • PDF Downloads:  1354
  • Cited By: 0
Publishing process
  • Received Date:  07 June 2012
  • Accepted Date:  09 July 2012
  • Published Online:  05 January 2013

Lattice Boltzmann modeling of particle inertial migration in a curved channel

  • 1. School of Mechanical Engineering, Southeast University, Nanjing 211189, China;
Fund Project:  Project supported by the Major Research plan of the National Natural Science Foundation of China (Grant No. 91023024), the National Science Foundation for Post-doctoral Scientists of China (Grant No. 2012M511647), and the Jiangsu Graduate Innovative Research Program (Grant No. CXZZ_0138).

Abstract: A three-dimensional coupled model for particle inertial migration in the presence of micro flows is proposed and implemented. In the present model, the kinetic theory based lattice Boltzmann method is used to describe the fluid flows, and the Newton dynamics equation based model is used to describe the translation and rotation of the particle. The fluid and particle model are coupled by the LBM bounceback scheme based moving boundary method. The processes of particle settlement under gravity and particle rotation in the condition of Couette flow take place. The reliability of the present model and algorithm is validated through comparisons between the present simulation and the benchmark tests in the literature. The simulations of particle migration with various radii in an annular curved channel are performed, and the classic velocity distribution of the secondary flow in the channel cross-section is reproduced successfully. The mechanism of the particle radius influencing the particle equilibrium position in the curved channel is discussed. The results show that the particle equilibrium position in the curved channel will approach to the channel inner wall with the increase of radius. The present model is of important value for detailed study of the particle dynamics in micro flows as well as for the design and development of new micro fluidic particle selective chips and devices.

Reference (25)

Catalog

    /

    返回文章
    返回