| 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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| Source Publication | JOURNAL OF CHEMICAL PHYSICS
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| 2012-03-21 | |
| Volume | 136Issue:11Pages:114506 |
| ISSN | 0021-9606 |
| Abstract | 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. |
| Keyword | Liquid Flow Surfaces Slip |
| Subject Area | 微机电系统中的流体力学问题 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000302214200038 |
| Funding Organization | This work was supported by the Research Grants Council of the Hong Kong Special Administrative Region under Grant No. 615710. |
| Department | LHD微尺度和非平衡流动 |
| Classification | 二类/Q1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/46542 |
| Collection | 高温气体动力学国家重点实验室 |
| Corresponding Author | Liu, C; Hong Kong Univ Sci & Technol, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China. |
| Recommended Citation 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. |
| 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. |
| 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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