| 二维顶盖驱动半圆腔内流动MRT-LBM研究 |
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| 引用本文： | 杨帆,施徐明,刘连国.二维顶盖驱动半圆腔内流动MRT-LBM研究[J].工程热物理学报,2012(4):595-598. |
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| 作者姓名： | 杨帆 施徐明 刘连国 |
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| 作者单位： | 上海理工大学能源与动力工程学院 |
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| 基金项目： | 国家自然科学基金(No.10902070;No.51176127);水沙科学与水利水电工程国家重点实验室开放研究基金(No.sklhse-2011-E-02);水资源与水电工程科学国家重点实验室开放研究基金(No.2010B076);上海高校选拔培养优秀青年教师科研专项基金(No.slg09002);上海市教育委员会重点学科建设资助项目(No.J50501) |
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| 摘 要： | 本文采用多弛豫时间格子玻尔兹曼方法(multi relaxation time lattice Boltzmann method—MRT LBM)对二维顶盖驱动半圆腔内流动进行了数值模拟,得到了雷诺数为500～50000范围内半圆腔内流场分布情况。在二维顶盖驱动半圆腔流场中,随雷诺数的增大,流场内旋涡的数目逐渐增加,且流动依次呈现出稳定流、周期流、混沌流等状态。本文计算结果表明,MRT-LBM模型可显著提高计算的稳定性,适用于大范围的雷诺数流动情况。
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| 关 键 词： | 格子Boltzmann方法 多弛豫时间 顶盖驱动 半圆腔 |
Flow Pattern in Two-Dimensional Lid-Driven Semi-Circular Cavity:a MRT Lattice Boltzmann Analysis |
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| G Fan,I Xu-Ming,IU Lian-Guo.Flow Pattern in Two-Dimensional Lid-Driven Semi-Circular Cavity:a MRT Lattice Boltzmann Analysis[J].Journal of Engineering Thermophysics,2012(4):595-598. |
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| Authors: | G Fan I Xu-Ming IU Lian-Guo |
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| Institution: | (School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China) |
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| Abstract: | The flow pattern in a two-dimensional lid-driven semi-circular cavity is analyzed based on multi relaxation time lattice Boltzmann method(MRT LBM) in this paper.The Reynolds number ranges from 500 to 50000.Numerical results show that,as Re increases,the phenomena in the cavity become more and more complex,and the number of the vortexes increases.Furthermore,as Re is increased,the flow in the cavity undergoes a complex transition(from steady to the periodic flow, and finally to the chaotic flow).The results demonstrate the superior numerical stability and wildly applicability of MRT model to different Reynolds number flow. |
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| Keywords: | lattice Boltzmann method multi relaxation time lid-driven semi-circular cavity |
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