Flow and slip process of Santotrac 50-based lubricant under high shear by molecular dynamic simulation

doi:10.1002/ls.1629

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	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
通讯作者	Wei, Chao(weichaobit@163.com)
发表期刊	LUBRICATION SCIENCE
	2023-04
卷号	35 期号:3 页码:163-170
ISSN	0954-0075
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.
关键词	carbon-chain lubricant high shear rate molecular dynamics simulation slip
DOI	10.1002/ls.1629
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000870830400001
关键词[WOS]	SURFACE-ENERGY ; FRICTION
WOS研究方向	Engineering
WOS类目	Engineering, Chemical ; Engineering, Mechanical
资助项目	National Natural Science Foundation of China[51875039]
项目资助者	National Natural Science Foundation of China
论文分区	Q4
力学所作者排名	1
RpAuthor	Wei, Chao
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/90416
专题	非线性力学国家重点实验室
作者单位	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
推荐引用方式 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.
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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