Influence of nanostructure morphology on the heat transfer and flow characteristics in nanochannel

doi:10.1016/j.ijthermalsci.2021.106927

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Influence of nanostructure morphology on the heat transfer and flow characteristics in nanochannel
	Yao, Shuting 1,2,3; Wang, Jiansheng 1,3; Liu, Xueling 1,3
刊名	International Journal of Thermal Sciences
	2021-07-01
卷号	165
关键词	Drag reduction Heat convection Heat resistance Heat transfer performance Molecular dynamics Nanostructures Shear flow % reductions Convective heat transfer Flow charac-teristics Flow resistance Fluid interactions Heat transfer and flows Heat transfer performance Heat-transfer characteristics Nano channels Nanostructure morphologies
ISSN号	1290-0729
DOI	10.1016/j.ijthermalsci.2021.106927
英文摘要	Based on the molecular dynamics principle, the convective heat transfer of the fluid through nanochannel with various rough nanostructure morphologies is investigated. The influences of nanostructure free shear ratio, morphology period and nanostructure depth on the flow and heat transfer characteristics are probed. A comprehensive evaluation on the convective heat transfer in rough nanochannel considering the flow resistance is performed. The result shows that the temperature jump and velocity slip dominate the heat and momentum exchange between the channel wall and fluid. Under the weak wall-fluid interaction, the smaller the nanostructure free shear ratio, the better the heat transfer performance as well as drag reduction characteristic. In contrast, the smaller the nanostructure morphology period, the better the heat transfer performance, the greater the flow resistance. Therefore, the wall rough morphology with small free shear ratio and sparse nanostructures is conducive to heat transfer augmentation and drag reduction jointly. The deeper rough nanostructure groove is unfavorable to reduce the flow resistance. The combination of rough nanostructure morphology and weak wall-fluid interaction is crucial, which will bring about a favorable impact on the heat transfer and flow resistance in nanochannel. Specifically, the nanostructure free shear ratio with a=0.1875 is a favorable rough morphology to obtain optimum heat transfer and drag reduction characteristics in nanochannel. © 2021 Elsevier Masson SAS
WOS研究方向	Thermodynamics ; Engineering
语种	英语
出版者	Elsevier Masson s.r.l.
WOS记录号	WOS:000639627900002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147719]
专题	石油化工学院
作者单位	1.Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, MOE, School of Mechanical Engineering, Tianjin University, Tianjin; 300350, China; 2.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Tianjin Key Laboratory of Nonlinear Dynamics and Chaos Control, School of Mechanical Engineering, Tianjin University, Tianjin; 300350, China
推荐引用方式 GB/T 7714	Yao, Shuting,Wang, Jiansheng,Liu, Xueling. Influence of nanostructure morphology on the heat transfer and flow characteristics in nanochannel[J]. International Journal of Thermal Sciences,2021,165.
APA	Yao, Shuting,Wang, Jiansheng,&Liu, Xueling.(2021).Influence of nanostructure morphology on the heat transfer and flow characteristics in nanochannel.International Journal of Thermal Sciences,165.
MLA	Yao, Shuting,et al."Influence of nanostructure morphology on the heat transfer and flow characteristics in nanochannel".International Journal of Thermal Sciences 165(2021).