输运现象
背景(考古学)
大规模运输
纳米尺度
统计物理学
材料科学
传质
连续介质力学
传热
纳米技术
物理
机械
工程物理
地质学
古生物学
作者
Chengzhen Sun,Runfeng Zhou,Zhixiang Zhao,Bofeng Bai
标识
DOI:10.1021/acs.jpclett.0c00591
摘要
Nanoconfined fluids (NCFs), which are confined in nanospaces, exhibit distinctive nanoscale effects, including surface effects, small-size effects, quantum effects, and others. The continuous medium hypothesis in fluid mechanics is not valid in this context because of the comparable characteristic length of spaces and molecular mean free path, and accordingly, the classical continuum theories developed for the bulk fluids usually cannot describe the mass and energy transport of NCFs. In this Perspective, we summarize the nanoscale effects on the thermodynamics, mass transport, flow dynamics, heat transfer, phase change, and energy transport of NCFs and highlight the related representative works. The applications of NCFs in the fields of membrane separation, oil and gas production, energy harvesting and storage, and biological engineering are especially indicated. Currently, the theoretical description framework of NCFs is still missing, and it is expected that this framework can be established by adopting the classical continuum theories with the consideration of nanoscale effects.
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