Boundary slip dependency on surface stiffness
Date published
2010-06-24T00:00:00Z
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Volume Title
Publisher
American Physical Society
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Type
Article
ISSN
1539-3755
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Citation
Nikolaos Asproulis and Dimitris Drikakis. Boundary slip dependency on surface stiffness. Physical Review E, Volume 81, Issue 6, 2010, 061503
Abstract
The paper investigates the effects of surface stiffness on the slip process aiming to obtain a better insight of the momentum transfer at nanoscale. The surface stiffness is modeled through the stiffness, kappa, of spring potentials, which are employed to construct the thermal walls. It is shown that variations of stiffness, kappa, influence the slip mechanism either toward slip or stick conditions. Increasing the values of kappa alters the oscillation frequency and the mean displacement of the wall particles toward higher and lower values, respectively. Our results suggest that the amount of slip produced as a function of stiffness follows a common pattern that can be modeled through a fifth-order polynomial function.
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Software Description
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Github
Keywords
molecular-dynamics simulation fluid-solid interface shear-flow liquid roughness