Influence of nanostructure morphology on the heat transfer and flow characteristics in nanochannel | |
Yao, Shuting1,2,3; Wang, Jiansheng1,3; Liu, Xueling1,3 | |
2021-07 | |
发表期刊 | International Journal of Thermal Sciences |
ISSN | 1290-0729 |
卷号 | 165 |
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 |
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 |
DOI | 10.1016/j.ijthermalsci.2021.106927 |
收录类别 | SCIE ; EI |
语种 | 英语 |
WOS研究方向 | Thermodynamics ; Engineering |
WOS类目 | Thermodynamics ; Engineering, Mechanical |
WOS记录号 | WOS:000639627900002 |
出版者 | Elsevier Masson s.r.l. |
EI入藏号 | 20211110084731 |
EI主题词 | Morphology |
EI分类号 | 631.1 Fluid Flow, General ; 641.2 Heat Transfer ; 761 Nanotechnology ; 801.4 Physical Chemistry ; 931.2 Physical Properties of Gases, Liquids and Solids ; 933 Solid State Physics ; 951 Materials Science |
来源库 | WOS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/147719 |
专题 | 石油化工学院 |
通讯作者 | Wang, Jiansheng; Liu, Xueling |
作者单位 | 1.Tianjin Univ, Sch Mech Engn, Key Lab Efficient Utilizat Low & Medium Grade Ene, MOE, Tianjin 300350, Peoples R China; 2.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China; 3.Tianjin Univ, Sch Mech Engn, Tianjin Key Lab Nonlinear Dynam & Chaos Control, Tianjin 300350, Peoples R China |
第一作者单位 | 石油化工学院 |
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). |
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