The effect of the electrical double layer on hydrodynamic lubrication: a non-monotonic trend with increasing zeta potential

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ID: 92295
2017
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Abstract
In the present study, a modified Reynolds equation including the electrical double layer (EDL)-induced electroviscous effect of lubricant is established to investigate the effect of the EDL on the hydrodynamic lubrication of a 1D slider bearing. The theoretical model is based on the nonlinear Poisson–Boltzmann equation without the use of the Debye–Hückel approximation. Furthermore, the variation in the bulk electrical conductivity of the lubricant under the influence of the EDL is also considered during the theoretical analysis of hydrodynamic lubrication. The results show that the EDL can increase the hydrodynamic load capacity of the lubricant in a 1D slider bearing. More importantly, the hydrodynamic load capacity of the lubricant under the influence of the EDL shows a non-monotonic trend, changing from enhancement to attenuation with a gradual increase in the absolute value of the zeta potential. This non-monotonic hydrodynamic lubrication is dependent on the non-monotonic electroviscous effect of the lubricant generated by the EDL, which is dominated by the non-monotonic electrical field strength and non-monotonic electrical body force on the lubricant. The subject of the paper is the theoretical modeling and the corresponding analysis.
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jing2017thebeilstein Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Jing, Dalei;Pan, Yunlu;Wang, Xiaoming;
Journal beilstein journal of nanotechnology
Year 2017
DOI
DOI not found
URL
https://doi.org/10.3762/bjnano.8.152
Keywords
chemistry Biology (General) Chemical technology Engineering (General). Civil engineering (General) Technology Mechanical engineering and machinery Science physics neurology. diseases of the nervous system mathematics electronic computers. computer science mining engineering. metallurgy

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