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

作　　者：Yang Shi Zhaosheng Yu Xueming Shao 

机构地区：[1]State Key Laboratory of Fluid Power Transmission and Control, Department of Mechanics. Zhejiang University, Hangzhou 310027, China

出　　处：《Particuology》2010年第4期351-359,共9页颗粒学报（英文版）

基　　金：support from the National Natural Science Foundation of China(no.10872181);the National Basic Research Program of China(no.2006CB705400);Chinese Universities Scientific Fund;the Major Program of the National Natural Science Foundation of China(no.10632070)

摘　　要：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 inter- face 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 compos- ite between two planar plates, cell trapping in a channel, and motion of particles due to both conventional and traveling wave dielectrophoretic forces.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 inter- face 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 compos- ite between two planar plates, cell trapping in a channel, and motion of particles due to both conventional and traveling wave dielectrophoretic forces.

关 键 词：Direct-forcing fictitious domain method Sharp interface methodMaxwell stress tensor method Dielectrophoresis Direct numerical simulation Cell trapping 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论] TN948.41[自动化与计算机技术—计算机科学与技术]