LATTICE BOLTZMANN SIMULATION OF VISCOUS DISSIPATION IN ELECTRO-OSMOTIC FLOW IN MICROCHANNELS

Zhen-Hua Chai (), Bao-Chang Shi () and Lin Zheng ()
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Zhen-Hua Chai: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China
Bao-Chang Shi: Department of Mathematics, Huazhong University of Science and Technology, Wuhan 430074, China
Lin Zheng: Department of Mathematics, Huazhong University of Science and Technology, Wuhan 430074, China

International Journal of Modern Physics C (IJMPC), 2007, vol. 18, issue 07, 1119-1131

Abstract: In this paper, the effects of viscous dissipation in electro-osmotic flow in microchannels are numerically analyzed with lattice Boltzmann method (LBM), and three different lattice Boltzmann models that can recover the macroscopic governing equations for electro-osmotic flow (EOF) are proposed. As the dimensions of the channels approach the microlevel, viscous dissipation could be significant due to a high velocity gradient in electric double layer (EDL). Numerical results show that viscous dissipation plays an important role in EOF in microchannels.

Keywords: Lattice Boltzmann method; electro-osmotic flow; viscous dissipation; electric double layer (search for similar items in EconPapers)
Date: 2007
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Citations: View citations in EconPapers (2)

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DOI: 10.1142/S0129183107011200

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