ON THE STRUCTURE AND CONTROL OF NEAR-WALL TURBULENCE
ON THE STRUCTURE AND CONTROL OF NEAR-WALL TURBULENCE
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DOI：
10.1063/1.868327
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发表时间：
1994-02-01
影响因子：
4.6
通讯作者：
JIMENEZ, J
中科院分区：
文献类型：
--
作者：
JIMENEZ, J
本文提出了湍流边界层近壁区事件的简化自持循环。近似定量分析所得到的模型预测的子层条纹和其他流动结构的正确尺寸。通过将其应用于一组数值模拟中，其中纵向和横向无滑移条件被施加在相对于壁的不同位置处，并对流过肋的流动进行分析，来进一步检查该模型。获得了流量统计数据的实质性变化，包括阻力减小，并且模型也正确地预测了由此产生的趋势。
A simplified self-sustaining cycle is proposed for the events in the near wall region of a turbulent boundary layer. An approximate quantitative analysis of the resulting model predicts the right dimensions for the sublayer streaks and for other flow structures. The model is checked further by applying it to a set of numerical simulations in which the longitudinal and transverse no-slip conditions are applied at different positions with respect to the wall, and to the analysis of flow over riblets. Substantial changes in the flow statistics are obtained, including drag reductions, and the resulting trends are also predicted correctly by the model.