Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 132, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3292682
Keywords
argon; flow simulation; liquid helium; molecular dynamics method; Poiseuille flow
Funding
- Hong Kong Innovation and Technology Fund [GHP/035/07GD]
- University Initiative [SBI07/08.EG01]
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In this work, we examine the effects of fluid-wall interaction on the fluid flux of nanoscale Poiseuille flows under large external driving force. The mass fluxes of liquid Ar and He confined by two parallel planar walls are measured by molecular dynamics simulations. For liquid Ar, a bimodal behavior in the flux is observed as the effective surface effect is varied. However, the bimodal behavior for Ar is not observed for He. At weak fluid-wall interactions, the flux of He is independent of fluid-wall binding energy, while it decreases monotonously with increasing fluid-wall binding energy when the fluid-wall interaction is strong.
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