| 用SPH-MD耦合算法模拟微通道中的液氩流动 |
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| 引用本文： | 刘佰奇,刘捷,卢文强,倪明玖.用SPH-MD耦合算法模拟微通道中的液氩流动[J].工程热物理学报,2012(6):993-996. |
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| 作者姓名： | 刘佰奇 刘捷 卢文强 倪明玖 |
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| 作者单位： | 中科院研究生院物理科学学院 |
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| 基金项目： | 国家自然科学基金资助项目(No.50876111;No.50936006) |
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| 摘 要： | 本文构造了SPH(光滑粒子动力学)-MD(分子动力学)耦合程序,在不同宽度微通道内,对不同驱动力下的液氩流动进行了模拟计算。结果表明,在通道宽度较窄时,流体速度分布和黏性系数分布均表现出很强的微尺度效应,随着通道宽度增大,这种微尺度效应逐渐减弱,流动特征逐渐接近于宏观Poiseuille流。
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| 关 键 词： | SPH-MD耦合算法 多尺度计算 微通道 壁面黏性系数 |
Simulation of Liquid Argon Flow in Micro-Channel by an SPH-MD Coupling Method |
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| LIU Bai-Qi LIU Jie,LU Wen-Qiang NI Ming-Jiu.Simulation of Liquid Argon Flow in Micro-Channel by an SPH-MD Coupling Method[J].Journal of Engineering Thermophysics,2012(6):993-996. |
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| Authors: | LIU Bai-Qi LIU Jie LU Wen-Qiang NI Ming-Jiu |
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| Institution: | (Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | In this paper,a coupling smoothed particle hydrodynamics(SPH) and molecular dynamics (MD) method is constructed.Using this numerical scheme,the liquid argon flow is simulated under different driving force for different micro-channel width.The results of velocity distribution and viscosity distribution reveal that the microscale effect is very strong when the channel is narrow. Furthermore,while the width becomes wider,the microscale effect grows weaker and the flow characteristic is closer to the macroscale Poiseuille flow. |
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| Keywords: | SPH-MD coupling method multiscale simulation micro-channel viscosity of the wall |
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