| 近地非流线体紊流绕流的数值分析 |
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| 引用本文： | 刘应清,罗志刚.近地非流线体紊流绕流的数值分析[J].西南交通大学学报,1991,4(4):74-80. |
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| 作者姓名： | 刘应清 罗志刚 |
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| 作者单位： | 西南交通大学机械工程二系，西南交通大学机械工程二系 |
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| 摘 要： | 本文提出了一种近地非流线体紊流绕流的数值分析方法。采用曲线坐标
和交错网格，以协变速度分量作为动量方程的独立变量，紊流项采用代
数应力模型，用乘方格式离散化，对动量方程离散化格式进行了特珠的
代数处理，近壁边界条件用函数法处理。用这种方法对高速列车简化二
维模型进行了计算，得到了较满意的结果。
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| 关 键 词： | 条流 非流线体 近地 高速列车 |
Numerical Analysis of Turbulent Flow Around A Bluff Body in Ground Proximity |
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| Liu Yingqing Luo Zhigang.Numerical Analysis of Turbulent Flow Around A Bluff Body in Ground Proximity[J].Journal of Southwest Jiaotong University,1991,4(4):74-80. |
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| Authors: | Liu Yingqing Luo Zhigang |
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| Abstract: | A calculation procedure for computing turbulent flow around abluff in ground proximity is presented.The scheme has beendeveloped with a generalized nonorthogonal coordinate system anda stagered grid arrangement.The physical covariant velocitycomponents are selected as the independent variables in themomentum equations and the discretization equation for thesevelocity components are obtained by a special algebraic manipulation,using the power law profile.The calculation procedure is demonstra-ted by its application to the 2-D turbulent flow around asimplified model of high speed train witn satisfactory results. |
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| Keywords: | turbulent flow bluff body ground proximity high speed train |
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