Combination of direct-forcing fictitious domain method and sharp interface method for dielectrophoresis of particles--颗粒学报PARTICUOLOGY

Shi, Y., Yu, Z., & Shao, X. (2010). Combination of direct-forcing fictitious domain method and sharp interface method for dielectrophoresis of particles. Particuology, 8(4), 351-359. https://doi.org/10.1016/j.partic.2010.01.008

Combination of direct-forcing fictitious domain method and sharp interface method for dielectrophoresis of particles

Yang Shi, Zhaosheng Yu^*, Xueming Shao

State Key Laboratory of Fluid Power Transmission and Control, Department of Mechanics, Zhejiang University, Hangzhou 310027, China

10.1016/j.partic.2010.01.008

Volume 8, Issue 4, August 2010, Pages 351-359

Received 12 November 2009, Accepted 11 January 2010, Available online 9 July 2010.

E-mail: yuzhaosheng@zju.edu.cn

Highlights

Abstract

In this paper, we combine the direct-forcing fictitious domain (DF/FD) method and the sharp interface method to resolve the problem of particle dielectrophoresis in two dimensions. The flow field and the motion of particles are solved with the DF/FD method, the electric field is solved with the sharp interface method, and the electrostatic force on the particles is computed using the Maxwell stress tensor method. The proposed method is validated via three problems: effective conductivity of particle composite between two planar plates, cell trapping in a channel, and motion of particles due to both conventional and traveling wave dielectrophoretic forces.

Graphical abstract

Keywords

Direct-forcing fictitious domain method; Sharp interface method; Maxwell stress tensor method; Dielectrophoresis; Direct numerical simulation; Cell trapping

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