BASE DRAG REDUCTION BY CONTROL OF THE 3-DIMENSIONAL UNSTEADY VORTICAL STRUCTURES

被引：0
|
作者：
RODRIGUEZ, O
机构：
来源：
EXPERIMENTS IN FLUIDS | 1991年 / 11卷 / 04期
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D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The present paper deals with the wake of a 2D body equipped with a drag reduction device. The device is a 3D trailing edge consisting of alternate segments of blunt base and spanwise cavity. The aerodynamic mechanisms acting on the near wake are studied in a water tunnel from schlieren observations by thermally marking large scale structures. The results show that the efficiency of the device is directly related to the presence of longitudinal vortices. An optimization of the shapes in subsonic compressible flow had led to a decrease of more than 40% of the total drag of the profile.
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页码：218 / 226
页数：9
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