The Mechanism of Size-Based Particle Separation by Dielectrophoresis in the Viscoelastic Flows

doi:10.1115/1.4039709

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	The Mechanism of Size-Based Particle Separation by Dielectrophoresis in the Viscoelastic Flows
	Zhou, T.; Deng, Y. B.; Zhao, H. W.; Zhang, X. M.; Shi, L. Y.; Joo, S. W.
	2018
发表期刊	Journal of Fluids Engineering-Transactions of the Asme
ISSN	0098-2202
卷号	140 期号:9 页码:6
摘要	Viscoelastic solution is encountered extensively in microfluidics. In this work, the particle movement of the viscoelastic flow in the contraction-expansion channel is demonstrated. The fluid is described by the Oldroyd-B model, and the particle is driven by dielectrophoretic (DEP) forces induced by the applied electric field. A time-dependent multiphysics numerical model with the thin electric double layer (EDL) assumption was developed, in which the Oldroyd-B viscoelastic fluid flow field, the electric field, and the movement of finite-size particles are solved simultaneously by an arbitrary Lagrangian-Eulerian (ALE) numerical method. By the numerically validated ALE method, the trajectories of particle with different sizes were obtained for the fluid with the Weissenberg number (Wi) of 1 and 0, which can be regarded as the Newtonian fluid. The trajectory in the Oldroyd-B flow with Wi = 1 is compared with that in the Newtonian fluid. Also, trajectories for different particles with different particle sizes moving in the flow with Wi = 1 are compared, which proves that the contraction-expansion channel can also be used for particle separation in the viscoelastic flow. The above results for this work provide the physical insight into the particle movement in the flow of viscous and elastic features.
关键词	microfluidics electrokinetic fluid-structure interaction computational fluid dynamics (CFD) arbitrary Lagrangian-Eulerian (ALE) method viscoelastic flow deformable particle microfluidic device migration motion Engineering
DOI	10.1115/1.4039709
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/61184
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Zhou, T.,Deng, Y. B.,Zhao, H. W.,et al. The Mechanism of Size-Based Particle Separation by Dielectrophoresis in the Viscoelastic Flows[J]. Journal of Fluids Engineering-Transactions of the Asme,2018,140(9):6.
APA	Zhou, T.,Deng, Y. B.,Zhao, H. W.,Zhang, X. M.,Shi, L. Y.,&Joo, S. W..(2018).The Mechanism of Size-Based Particle Separation by Dielectrophoresis in the Viscoelastic Flows.Journal of Fluids Engineering-Transactions of the Asme,140(9),6.
MLA	Zhou, T.,et al."The Mechanism of Size-Based Particle Separation by Dielectrophoresis in the Viscoelastic Flows".Journal of Fluids Engineering-Transactions of the Asme 140.9(2018):6.

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