KOLMOGOROV BEHAVIOR OF NEAR-WALL TURBULENCE AND ITS APPLICATION IN TURBULENCE MODELING
KOLMOGOROV BEHAVIOR OF NEAR-WALL TURBULENCE AND ITS APPLICATION IN TURBULENCE MODELING
复制标题
近壁湍流的柯尔莫哥洛夫行为及其在湍流建模中的应用
DOI：
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发表时间：
1992
期刊：
影响因子：
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通讯作者：
J. Lumley
中科院分区：
文献类型：
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作者：
T. Shih;J. Lumley
总结湍流的近壁行为以不同于Hanjalic和Launder1及其追随者2，3，4，5提出的方式重新进行了研究。结果表明，在离壁面一定距离处，所有的高能大涡都将退化为Kolmogorov涡（湍流中的最小涡）。所有重要的壁参数，如摩擦速度，粘性长度尺度，和平均应变率在壁，其特征在于柯尔莫哥洛夫微尺度。根据近壁湍流的这种Kolmogorov行为，利用直接数值模拟（DNS）数据和近壁湍流的渐近分析，可以估算大涡变为“Kolmogorov”涡位置处的湍流动能、耗散率等湍流量。这些信息将为湍流输运方程提供有用的边界条件。作为一个例子，这个概念被纳入标准κ模型，然后应用于通道和边界层流动。...
SUMMARY The near-wall behavior of turbulence is re-examined in a way different from that proposed by Hanjalic and Launder1 and followers2,3,4,5. It is shown that at a certain distance from the wall, all energetic large eddies will reduce to Kolmogorov eddies (the smallest eddies in turbulence). All the important wall parameters, such as friction velocity, viscous length scale, and mean strain rate at the wall, are characterised by Kolmogorov microscales. According t o this Kolmogorov behavior of near-wall turbulence, the turbulence quantities, such as turbulent kinetic energy, dissipation rate, etc. at the location where the large eddies become “Kolmogorov” eddies, can be estimated by using both direct numerical simulation (DNS) data and asymptotic analysis of near-wall turbulence. This information will provide useful boundary conditions for the turbulent transport equations. As a n example, the concept is incorporated in the standard κ - emodel which is then applied t o channel and boundary layer flows. ...