ISI Web of Knowledge Alert - Thompson, P

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Cited Article:   Thompson, P. A general boundary condition for liquid flow at solid surfaces Alert Expires:   21 OCT 2009 Number of Citing Articles:   1 new records this week (1 in this e-mail) Organization ID:   3b97d1bbc1878baed0ab183d8b03130b

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Title: An atomistic-continuum hybrid simulation of fluid flows over superhydrophobic surfaces

Authors: Li, Q; He, GW

Author Full Names: Li, Qiang; He, Guo-Wei

Source: BIOMICROFLUIDICS 3 (2): Art. No. 022409 APR-JUN 2009

Language: English

Document Type: Proceedings Paper

Author Keywords: Couette flow; flow simulation; molecular dynamics method; Navier-Stokes equations

KeyWords Plus: BOUNDARY-CONDITIONS; MOLECULAR-DYNAMICS; SHEAR-FLOW; SOLID INTERFACE; SLIP LENGTH; LIQUID; MICROCHANNELS; VELOCIMETRY; ROUGHNESS; FRICTION

Abstract: Recent experiments have found that slip length could be as large as on the order of 1 mu m for fluid flows over superhydrophobic surfaces. Superhydrophobic surfaces can be achieved by patterning roughness on hydrophobic surfaces. In the present paper, an atomistic-continuum hybrid approach is developed to simulate the Couette flows over superhydrophobic surfaces, in which a molecular dynamics simulation is used in a small region near the superhydrophobic surface where the continuum assumption is not valid and the Navier-Stokes equations are used in a large region for bulk flows where the continuum assumption does hold. These two descriptions are coupled using the dynamic coupling model in the overlap region to ensure momentum continuity. The hybrid simulation predicts a superhydrophobic state with large slip lengths, which cannot be obtained by molecular dynamics simulation alone.

Reprint Address: He, GW, Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China.

Research Institution addresses: [Li, Qiang; He, Guo-Wei] Chinese Acad Sci, Inst Mech, LNM, Beijing 100080, Peoples R China

E-mail Address: hgw@lnm.imech.ac.cn

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Cited Reference Count: 45

Times Cited: 1

Publisher: AMER INST PHYSICS; CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA

Subject Category: Biophysics; Nanoscience & Nanotechnology; Physics, Fluids & Plasmas

ISSN: 1932-1058

DOI: 10.1063/1.3137674

IDS Number: 465PW

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