Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/161903
Title: Numerical analysis of thermophoresis of charged colloidal particles in non-Newtonian concentrated electrolyte solutions
Authors: Zhou, Yi
Deng, Xin
Liang, Sheng
Zhao, Cunlu
Yang, Chun
Keywords: Engineering::Mechanical engineering
Issue Date: 2022
Source: Zhou, Y., Deng, X., Liang, S., Zhao, C. & Yang, C. (2022). Numerical analysis of thermophoresis of charged colloidal particles in non-Newtonian concentrated electrolyte solutions. Electrophoresis, 1-9. https://dx.doi.org/10.1002/elps.202200030
Journal: Electrophoresis
Abstract: Thermophoresis of colloidal particles in aqueous media is more frequently applied in biomedical analysis with processed fluids as biofluids. In this work, a numerical analysis of the thermophoresis of charged colloidal particles in non-Newtonian concentrated electrolyte solutions is presented. In a particle-fixed reference frame, the flow field of non-Newtonian fluids has been governed by the Cauchy momentum equation and the continuity equation, with the dynamic viscosity following the power-law fluid model. The numerical simulations reveal that the shear-thinning effect of pseudoplastic fluids is advantageous to the thermophoresis, and the shear-thickening effect of dilatant fluids slows down the thermophoresis. Both the shear-thinning and shear-thickening effects of non-Newtonian fluids on a thermodiffusion coefficient are pronounced for the case when the thickness of electric double layer (EDL) surrounding a particle is moderate or thin. Finally, the reciprocal of the dynamic velocity at the particle surface is calculated to approximately estimate the thermophoretic behavior of a charged particle with moderate or thin EDL thickness.
URI: https://hdl.handle.net/10356/161903
ISSN: 0173-0835
DOI: 10.1002/elps.202200030
Rights: © 2022 Wiley-VCH GmbH. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

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