Optical method for skin-friction measurements on fast-rotating blades

被引：0
|
作者：
Erich Schülein
机构：
[1] Institute of Aerodynamics and Flow Technology,German Aerospace Center DLR
来源：
Experiments in Fluids | 2014年 / 55卷
关键词：
Wall Shear Stress; Skin Friction; Deflection Angle; Marangoni Number; Marangoni Convection;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The movement of a thin oil film on the surface of fast-rotating disks or propeller blades is analyzed in the present work with the aim to find a means for skin-friction measurements. A new skin-friction measurement technique is proposed, the rotational-flow global interferometry skin-friction method, utilizing the relationship between the oil-flow deflection angles, the induced centrifugal forces, and the skin friction. Finally, some results from initial wind-tunnel experiments using the proposed technique are presented.
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