| Fluid transport in nanochannels induced by temperature gradients |
| Liu C(刘崇) ; Lv Y; Li ZG; Liu, C; Hong Kong Univ Sci & Technol, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China.
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| 发表期刊 | JOURNAL OF CHEMICAL PHYSICS
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| 2012-03-21
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| 卷号 | 136期号:11页码:114506 |
| ISSN | 0021-9606
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| 摘要 | We investigate the mechanisms of fluid transport driven by temperature gradients in nanochannels through molecular dynamics simulations. It is found that the fluid-wall interaction is critical in determining the flow direction. In channels of very low surface energy, where the fluid-wall binding energy epsilon(fw) is small, the fluid moves from high to low temperature and the flow is induced by a potential ratchet near the wall. In high surface energy channels, however, the fluid is pumped from low to high temperature and the pressure drop caused by the temperature gradient is the major driving force. In addition, as the fluid-wall interaction is strengthened, the flow flux assumes a maximum, where epsilon(fw) is close to the lower temperature T-L of the channel and epsilon(fw)/kT(L) approximate to 1 is roughly satisfied. |
| 关键词 | Liquid Flow
Surfaces
Slip
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| 学科领域 | 微机电系统中的流体力学问题
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000302214200038
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| 项目资助者 | This work was supported by the Research Grants Council of the Hong Kong Special Administrative Region under Grant No. 615710.
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| 课题组名称 | LHD微尺度和非平衡流动
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| 论文分区 | 二类/Q1
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/46542
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| 专题 | 高温气体动力学国家重点实验室
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| 通讯作者 | Liu, C; Hong Kong Univ Sci & Technol, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China. |
推荐引用方式
GB/T 7714 |
Liu C,Lv Y,Li ZG,et al. Fluid transport in nanochannels induced by temperature gradients[J]. JOURNAL OF CHEMICAL PHYSICS,2012,136,11,:114506.
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| APA |
刘崇,Lv Y,Li ZG,Liu, C,&Hong Kong Univ Sci & Technol, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China..(2012).Fluid transport in nanochannels induced by temperature gradients.JOURNAL OF CHEMICAL PHYSICS,136(11),114506.
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| MLA |
刘崇,et al."Fluid transport in nanochannels induced by temperature gradients".JOURNAL OF CHEMICAL PHYSICS 136.11(2012):114506.
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