Flow and slip process of Santotrac 50-based lubricant under high shear by molecular dynamic simulation
文献类型：期刊论文
| 作者 | Zhao, Xin2,3; Wei, Chao3; Yin, Zhenxin3; Ma, Wenjie1 ; Ma,Wenjie
|
| 刊名 | LUBRICATION SCIENCE
 |
| 出版日期 | 2022-10-21 |
| 页码 | 8 |
| 关键词 | carbon-chain lubricant high shear rate molecular dynamics simulation slip |
| ISSN号 | 0954-0075 |
| DOI | 10.1002/ls.1629 |
| 通讯作者 | Wei, Chao(weichaobit@163.com) |
| 英文摘要 | We investigate flow and slip behaviour of Santotrac 50 molecules under high shear in Couette cell by means of Molecular Dynamic simulation to understand reduced friction force. Molecular chain stretches and oriented to shear direction, and move. Slip starts on metal surface at 2 x 10(8) s(-1), and increases with shear rate. Slip length keeps scale at nanometre. Molecular conformation and occurrence of slip both indicate a reduced shear stress. Furthermore, when changing wettability, slip length increases in power law and thus decreases shear stress greatly. Occurrence of low-density region near surface can explain slip. And thus, we extended apparent slip model, which divided lubricant into liquid layers with different viscosities, to elucidate the relationship between molecule distribution inner layer and slip on surface influenced by shear velocity and wettability. Above all, our research sheds light on flow and slip behaviour of complex fluid and can be applied in improving lubrication property. |
| WOS关键词 | SURFACE-ENERGY ; FRICTION |
| 资助项目 | National Natural Science Foundation of China[51875039] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000870830400001 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/90415]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Wei, Chao |
| 作者单位 | 1.Univ Laval, Dept Phys Genie Phys & Opt, Quebec City, PQ, Canada 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing, Peoples R China 3.Beijing Inst Technol, Natl Key Lab Vehicular Transmiss, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Xin,Wei, Chao,Yin, Zhenxin,et al. Flow and slip process of Santotrac 50-based lubricant under high shear by molecular dynamic simulation[J]. LUBRICATION SCIENCE,2022:8. |
| APA | Zhao, Xin,Wei, Chao,Yin, Zhenxin,Ma, Wenjie,&Ma,Wenjie.(2022).Flow and slip process of Santotrac 50-based lubricant under high shear by molecular dynamic simulation.LUBRICATION SCIENCE,8. |
| MLA | Zhao, Xin,et al."Flow and slip process of Santotrac 50-based lubricant under high shear by molecular dynamic simulation".LUBRICATION SCIENCE (2022):8. |
入库方式： OAI收割
来源：力学研究所
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