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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.
Source PublicationJOURNAL OF CHEMICAL PHYSICS
2012-03-21
Volume136Issue:11Pages:114506
ISSN0021-9606
AbstractWe 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.
KeywordLiquid Flow Surfaces Slip
Subject Area微机电系统中的流体力学问题
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000302214200038
Funding OrganizationThis work was supported by the Research Grants Council of the Hong Kong Special Administrative Region under Grant No. 615710.
DepartmentLHD微尺度和非平衡流动
Classification二类/Q1
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46542
Collection高温气体动力学国家重点实验室
Corresponding AuthorLiu, 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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