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Slip boundary for fluid flow at rough solid surfaces

delete2012-02-13
delete38
PRE
AI
Y
Yongping Chen *
C
Chengbin Zhang
M
Mingheng Shi
G
G. P. Peterson
DOI:10.1063/1.3685490delete
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Abstract

Abstract

En 中文
A molecular dynamics simulation of slip boundary for fluid flow past a solid surface incorporating roughness effect as characterized by fractal geometry has been conducted with a focus on the origin of slip, fluid structure, and slip boundary flow. The results indicate that interfacial slip develops provided that the wall is effectively uncorrugated. Compared with the atomically smooth surface, extra viscous dissipation is induced for shear flow past a rough surface and leading to a reduction in boundary slip. In particular, we find that a more irregular topography decreases the boundary slip even for the same statistical roughness height. (C) 2012 American Institute of Physics. [doi:10.1063/1.3685490]
Keywords:
SUPERHYDROPHOBIC SURFACES
WALL ROUGHNESS
BEHAVIOR
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Journal

Applied Physics Letters cover
Applied Physics Letters
IF:
3.6
Papers:
10.4W
Citations:
17.8W

Organization

U
university system of georgia
Scholars:
7.3W
Papers: 6.5W
Citations: 101
S
southeast university - china
Scholars:
5.3W
Papers: 4.9W
Citations: 57