| Flow and slip process of Santotrac 50-based lubricant under high shear by molecular dynamic simulation | |
Zhao X(赵欣); Wei, Chao; Yin, Zhenxin; Ma, Wenjie
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| Corresponding Author | Wei, Chao([email protected]) |
| Source Publication | LUBRICATION SCIENCE
 |
| 2023-04 | |
| Volume | 35Issue:3Pages:163-170 |
| ISSN | 0954-0075 |
| Abstract | 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. |
| Keyword | carbon-chain lubricant high shear rate molecular dynamics simulation slip |
| DOI | 10.1002/ls.1629 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000870830400001 |
| WOS Keyword | SURFACE-ENERGY ; FRICTION |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical ; Engineering, Mechanical |
| Funding Project | National Natural Science Foundation of China[51875039] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | Q4 |
| Ranking | 1 |
| Contributor | Wei, Chao |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/90416 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.{Zhao Xin, Wei Chao, Yin Zhenxin} Beijing Inst Technol Natl Key Lab Vehicular Transmiss Beijing Peoples R China 2.{Zhao Xin} Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing Peoples R China 3.{Ma Wenjie} Univ Laval Dept Phys Genie Phys & Opt Quebec City PQ Canada |
| Recommended Citation GB/T 7714 | Zhao X,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,2023,35,3,:163-170.Rp_Au:Wei, Chao |
| APA | 赵欣,Wei, Chao,Yin, Zhenxin,&Ma, Wenjie.(2023).Flow and slip process of Santotrac 50-based lubricant under high shear by molecular dynamic simulation.LUBRICATION SCIENCE,35(3),163-170. |
| MLA | 赵欣,et al."Flow and slip process of Santotrac 50-based lubricant under high shear by molecular dynamic simulation".LUBRICATION SCIENCE 35.3(2023):163-170. |
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| File Name/Size | DocType | Version | Access | License | ||
| Jp2022FA115.pdf（1549KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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