Modeling and analysis of interfacial electro-kinetic effects on thin film lubrication |
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| Authors: | Shaoxian Bai Ping Huang Yonggang Meng Shizhu Wen |
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| Affiliation: | aState Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China;bMechanical Engineering College, South China University of Technology, Guangzhou 510640, China |
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| Abstract: | At the interface between a solid and a following liquid, charge migration within the electric double layer causes an electro-viscous force to develop which manifests itself as an enhanced fluid viscosity. Based on the Poisson–Boltzmann equation, a new mathematical model of the electro-viscosity is developed. Numerical analysis is carried out taking into account the influence of the electric double layer on thin film lubrication. Analysis results show that the electro-viscosity leads to a significant increase in the film thickness in the thin film regime (below 100 nm). |
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| Keywords: | Electric double layer Electro-viscosity Thin film lubrication |
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