Behavior of Wake Vortices Near Ground
Behavior of Wake Vortices Near Ground
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DOI：
10.2514/2.7457
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发表时间：
1997
期刊：
影响因子：
2.5
通讯作者：
A. Corjon;T. Poinsot
中科院分区：
文献类型：
--
作者：
A. Corjon;T. Poinsot
本文对嵌入稳定大气边界层中的涡旋对进行了直接数值模拟。研究了不同侧风条件的影响。这些计算证明了在雷诺数（3.77 × 10.3≤Re Γ≤1.13 × 10.5）范围内二次涡的产生。讨论了不同侧风值下尾流涡与地面相互作用的物理特性。大气边界层间涡度的重新分布和原涡诱导的涡度可以解释涡旋倾斜现象。给出了侧风对两个涡旋达到的最小高度影响的参数化。
Direct numerical simulations of a vortex pair embedded in a stable atmospheric boundary layer are presented. The effects of various crosswind conditions are studied. These computations demonstrate the creation of secondary vortices for the range of Reynolds number (3.77 x 10 3 ≤ Re Γ ≤ 1.13 x 10 5 ). The physics of wake vortex interactions with the ground for different values of crosswind are discussed. The redistribution of vorticity between the atmospheric boundary layer and the vorticity induced by the primary vortices may explain the vortex tilting phenomenon. A parameterization of the effect of crosswind on the minimum altitude reached by the two vortices is given.