未找到相关数据
Origin of surface-shear-stress pulses in turbulent boundary layers
被引：0
作者：
Sandborn, V.A.
[1
,2
]
机构：
[1] Colorado State University, Fort Collins, CO 80523, United States
[2] Department of Civil Engineering
来源：
AIAA Journal
|
2008年
/
46卷
/
10期
关键词：
The development of the time-dependent surface-shear-stress pulses and the near-surface velocities for transition flows with moderate;
1.2-2.7% freestream turbulence levels was investigated. A series of measurements was made in boundary layers transitioning from laminar-to-turbulent flow in small;
closed return;
6.9 × 16.5 cm inlet wind tunnel. the freestream velocity distribution at the measuring station;
53.3 cm downstream of the inlet;
was favorable. The time-dependent surface-shear-stress traces were obtained using a 0.01 mm diameter platinum-8% tungsten hot wire mounted directly on the surface. The surface hot wire was calibrated using a fully developed channel flow calibrator;
which was mounted directly over the sensor. It was observed that the outer boundary-layer flow disturbances;
characterized by negative spikes of velocity;
were found to be the precursor for large positive surface-shear-stress pulses;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：2646 / 2649
相关论文
未找到相关数据