COHERENT STRUCTURES IN A 3-DIMENSIONAL WALL JET

被引：25
|
作者：
MATSUDA, H [1 ]
LIDA, S [1 ]
HAYAKAWA, M [1 ]
机构：
[1] HOKKAIDO UNIV,DEPT MECH ENGN 2,SAPPORO,HOKKAIDO 060,JAPAN
来源：
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME | 1990年 / 112卷 / 04期
关键词：
D O I：
10.1115/1.2909428
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The formation mechanism of streamwise vortices in the near field of the three-dimensional wall jet discharging from a circular nozzle along a flat plate is studied experimentally using a conditional sampling technique. Ensemble-averages of the lateral velocity component indicate the presence of large-scale horseshoe-like structures, whose legs are inclined and stretched to form the streamwise vortices in the mixing region of the jet. Based on the present result, a coherent structure model for the near field of the wall is proposed.
引用
收藏
页码：462 / 467
页数：6
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