Cited Article: Lichter S. Mechanisms for liquid slip at solid surfaces
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Title:
Effects of Channel Scale on Slip Length of Flow in Micro/Nanochannels
Authors:
Yang, XF; Zheng, ZQC
Author Full Names:
Yang, Xiaofan; Zheng, Zhongquan C.
Source:
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME 132 (6): Art. No. 061201 JUN 2010
Language:
English
Document Type:
Article
Author Keywords:
microchannel flow; molecular dynamics method; nanofluidics; slip flow
KeyWords Plus:
MOLECULAR-DYNAMICS; BOUNDARY-CONDITIONS; MICRO-FLUIDICS; HYBRID METHOD; CONTINUUM; SIMULATION; PARTICLE; COMPUTATIONS; MODEL
Abstract:
The concept of slip length, related to surface velocity and shear rate, is often used to analyze the slip surface property for flow in micro- or nanochannels. In this study, a hybrid scheme that couples molecular dynamics simulation (used near the solid boundary to include the surface effect) and a continuum solution (to study the fluid mechanics) is validated and used for the study of slip length behavior in the Couette flow problem. By varying the height of the channel across multiple length scales, we investigate the effect of channel scale on surface slip length. In addition, by changing the velocity of the moving-solid wall, the influence of shear rate on the slip length is studied. The results show that within a certain range of the channel heights, the slip length is size dependent. This upper bound of the channel height can vary with the shear rate. Under different magnitudes of moving velocities and channel heights, a relative slip length can be introduced, which ch!
anges with channel height following a logarithmic function, with the coefficients of the function being the properties of the fluid and wall materials. [DOI: 10.1115/1.4001619]
Reprint Address:
Yang, XF, Kansas State Univ, Dept Mech & Nucl Engn, Manhattan, KS 66506 USA.
Research Institution addresses:
[Yang, Xiaofan; Zheng, Zhongquan C.] Kansas State Univ, Dept Mech & Nucl Engn, Manhattan, KS 66506 USA
E-mail Address:
xiaofan@ksu.edu; zzheng@ksu.edu
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Cited Reference Count:
27
Times Cited:
0
Publisher:
ASME-AMER SOC MECHANICAL ENG; THREE PARK AVE, NEW YORK, NY 10016-5990 USA
Subject Category:
Engineering, Mechanical
ISSN:
0098-2202
DOI:
10.1115/1.4001619
IDS Number:
615EW
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