The Development of the Lift of an Impulsively Started Elliptic Cylinder at Incidence
The Development of the Lift of an Impulsively Started Elliptic Cylinder at Incidence
复制标题
脉冲启动椭圆柱入射时升力的发展
DOI：
10.1143/jpsj.33.1706
复制
发表时间：
1972
影响因子：
1.7
通讯作者：
S. Taneda
中科院分区：
文献类型：
--
作者：
S. Taneda
用应变片测量了2：1椭圆柱在冲角20°和45°时的冲击起动升力随时间的变化。在起动后的初始阶段，升力出现一个明显的峰值，然后消失。在此之后，第二个高峰开始发展。流动显示实验表明，第一孤立涡在第二升力峰开始发展的瞬间出现在椭圆柱后部，第二升力峰出现在第二孤立涡即将从椭圆柱后部释放的时刻。
The time-dependent lift of an impulsively started 2:1 elliptic cylinder at angles of attack 20° and 45° was measured by means of strain gauges. At the initial stage after starting a marked peak in lift occurs and then vanishes. After this, the second peak begins to develop. Flow visualization experiments show that the first isolated vortex makes its appearance in the rear of the elliptic cylinder at the instant when the second peak in lift begins to develop, and that the second peak in lift occurs when the second isolated vortex is about to be released from the back of the elliptic cylinder.