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The lattice Boltzmann modeling of two-phase electroosmotic flow in microchannels

By J Lu and CO Ng

Abstract

Technial Session - 2C Multi-phase Flows(1): no. S2C5In this paper, a numerical framework based on the lattice Boltzmann method is presented for modeling two-phase electroosmotic flow within microchannels. In the model, lattice Boltzmann schemes are designed for all the governing equations involved such as Navier-Stokes equations for momentum transport, Nernst-Planck equations for ion transport, the Cahn-Hilliard equation for the immiscible fluid interface motion, and Poisson equation for the electric potential referring the model proposed in Shao’s work [6]. Related boundary schemes are also proposed to modeling the slip effect on the microchannel surfaces. The theoretical analysis shows that the model has second order accuracy.published_or_final_versio

Topics: Two-phase flow, Electrokinetic phenomena, Lattice Boltzmann method
Publisher: 'The Korean Society for Heat Treatment'
Year: 2014
OAI identifier: oai:hub.hku.hk:10722/208306
Provided by: HKU Scholars Hub

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