The effect of the electrical double layer on hydrodynamic lubrication: a non-monotonic trend with increasing zeta potential
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 Poisso...
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| Format: | Article |
| Language: | English |
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Beilstein-Institut
2017-07-01
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| Series: | Beilstein Journal of Nanotechnology |
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| Online Access: | https://doi.org/10.3762/bjnano.8.152 |
| _version_ | 1818528887073669120 |
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| author | Dalei Jing Yunlu Pan Xiaoming Wang |
| author_facet | Dalei Jing Yunlu Pan Xiaoming Wang |
| author_sort | Dalei Jing |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-11T06:55:51Z |
| format | Article |
| id | doaj.art-045b02bcf8c24664b1a3c321cc08fa02 |
| institution | Directory Open Access Journal |
| issn | 2190-4286 |
| language | English |
| last_indexed | 2024-12-11T06:55:51Z |
| publishDate | 2017-07-01 |
| publisher | Beilstein-Institut |
| record_format | Article |
| series | Beilstein Journal of Nanotechnology |
| spelling | doaj.art-045b02bcf8c24664b1a3c321cc08fa022022-12-22T01:16:46ZengBeilstein-InstitutBeilstein Journal of Nanotechnology2190-42862017-07-01811515152210.3762/bjnano.8.1522190-4286-8-152The effect of the electrical double layer on hydrodynamic lubrication: a non-monotonic trend with increasing zeta potentialDalei Jing0Yunlu Pan1Xiaoming Wang2School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. ChinaKey Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education and School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China,School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin, 150001, P. R. ChinaIn 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.https://doi.org/10.3762/bjnano.8.152electrical double layerelectroviscous effecthydrodynamic lubricationzeta potential |
| spellingShingle | Dalei Jing Yunlu Pan Xiaoming Wang The effect of the electrical double layer on hydrodynamic lubrication: a non-monotonic trend with increasing zeta potential Beilstein Journal of Nanotechnology electrical double layer electroviscous effect hydrodynamic lubrication zeta potential |
| title | The effect of the electrical double layer on hydrodynamic lubrication: a non-monotonic trend with increasing zeta potential |
| title_full | The effect of the electrical double layer on hydrodynamic lubrication: a non-monotonic trend with increasing zeta potential |
| title_fullStr | The effect of the electrical double layer on hydrodynamic lubrication: a non-monotonic trend with increasing zeta potential |
| title_full_unstemmed | The effect of the electrical double layer on hydrodynamic lubrication: a non-monotonic trend with increasing zeta potential |
| title_short | The effect of the electrical double layer on hydrodynamic lubrication: a non-monotonic trend with increasing zeta potential |
| title_sort | effect of the electrical double layer on hydrodynamic lubrication a non monotonic trend with increasing zeta potential |
| topic | electrical double layer electroviscous effect hydrodynamic lubrication zeta potential |
| url | https://doi.org/10.3762/bjnano.8.152 |
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