| FV-MD耦合算法在微通道流动研究中的应用 |
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| 引用本文： | 孙杰,何雅玲,陶文铨.FV-MD耦合算法在微通道流动研究中的应用[J].工程热物理学报,2009,30(10). |
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| 作者姓名： | 孙杰 何雅玲 陶文铨 |
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| 作者单位： | 西安交通大学能源与动力工程学院,动力工程多相流国家重点实验室,陕西西安,710049 |
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| 基金项目： | 国家自然科学基金项目，全国优秀博士学位论文作者专项资金资助项目 |
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| 摘 要： | 本文采用有限容积(FV)-分子动力学(MD)耦合算法对微通道内的液体流动进行了模拟研究.分析了通道宽度以及流固作用势强度对流体流动形式和壁面滑移速度的影响.结果显示:通道宽度减小与流固作用势的减弱都会使速度分布与宏观尺度下的分析解出现更大偏离,滑移速度与滑移长度明显增加.对于流体为液体氩,壁面为金属铂的工况条件,当通道宽度超过约0.6μm时,滑移速度不足最大流速的0.5%,滑移长度不足通道宽度的0.2%.
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| 关 键 词： | 分子动力学 有限容积法 耦合算法 微通道流动 速度滑移 |
APPLICATION OF FV-MD COUPLING ALGORITHM IN MICROCHANNEL FLOW |
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| SUN Jie,HE Ya-Ling,TAO Wen-Quan.APPLICATION OF FV-MD COUPLING ALGORITHM IN MICROCHANNEL FLOW[J].Journal of Engineering Thermophysics,2009,30(10). |
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| Authors: | SUN Jie HE Ya-Ling TAO Wen-Quan |
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| Institution: | SUN Jie HE Ya-Ling TAO Wen-Quan (State Key Laboratory of Multiphase Flow in Power Engineering,School of Energy & Power Engineering Xi'an Jiaotong University,Xi'an 710049,China) |
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| Abstract: | In this paper,the FV(finite volume)-MD(molecular dynamics) coupling algorithm was employed to study the liquid flow in microchannels.The effects of the channel width and the liquid-solid interaction were analyzed.The results show that the decreases in channel width and liquid-solid interaction cause the velocity profile deviates from the analytical solution and the emergence of velocity slip.In the case of Ar-Pt,the velocity slip is less than 0.5%of the maximum velocity and the slip length is less than 0.2%... |
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| Keywords: | molecular dynamics finite volume coupling algorithm microchannel flow velocity slip |
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