| An Atomistic-Continuum Hybrid Simulation Of Fluid Flows Over Superhydrophobic Surfaces | |
Li Q(李强); He GW(何国威) ; He GW
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| Source Publication | Biomicrofluidics
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| 2009 | |
| ISSN | 1932-1058 |
| 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. |
| Keyword | Couette Flow Flow Simulation Molecular Dynamics Method Navier-stokes Equations Boundary-conditions Molecular-dynamics Shear-flow Solid Interface Slip Length Liquid Microchannels Velocimetry Roughness Friction |
| DOI | 10.1063/1.3137674 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000267600300011 |
| WOS Keyword | BOUNDARY-CONDITIONS ; MOLECULAR-DYNAMICS ; SHEAR-FLOW ; SOLID INTERFACE ; SLIP LENGTH ; LIQUID ; MICROCHANNELS ; VELOCIMETRY ; ROUGHNESS ; FRICTION |
| WOS Research Area | Biochemistry & Molecular Biology ; Biophysics ; Science & Technology - Other Topics ; Physics |
| WOS Subject | Biochemical Research Methods ; Biophysics ; Nanoscience & Nanotechnology ; Physics, Fluids & Plasmas |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/26755 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | He GW |
| Recommended Citation GB/T 7714 | Li Q,He GW,He GW. An Atomistic-Continuum Hybrid Simulation Of Fluid Flows Over Superhydrophobic Surfaces[J]. Biomicrofluidics,2009. |
| APA | 李强,何国威,&He GW.(2009).An Atomistic-Continuum Hybrid Simulation Of Fluid Flows Over Superhydrophobic Surfaces.Biomicrofluidics. |
| MLA | 李强,et al."An Atomistic-Continuum Hybrid Simulation Of Fluid Flows Over Superhydrophobic Surfaces".Biomicrofluidics (2009). |
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