A MEMS skin-friction sensor for time resolved measurements in separated flows

被引：0
|
作者：
M. Schober
E. Obermeier
S. Pirskawetz
H.-H. Fernholz
机构：
[1] Technische Universität Berlin,Hermann
[2] Technische Universität Berlin,Föttinger
来源：
Experiments in Fluids | 2004年 / 36卷
关键词：
Supply Voltage; Separate Flow; Wheatstone Bridge; Obstacle Height; Wire Probe;
D O I：
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学科分类号：
摘要：
A MEMS surface fence sensor for skin-friction measurements in separated flows has been developed and tested successfully in low-speed flows. The new sensor is able to distinguish between forward and reverse flow and features a temporal resolution of up to 1 kHz. Calibrations of the sensor have been obtained in the range of –0.7 N m-2≤τw≤0.7 N m-2 with a resolution of 0.02 N m-2. Comparative measurements with the wall-pulsed wire technique in a reverse-flow region show excellent agreement with respect to the mean skin-friction coefficient cf but also reveal some discrepancies for the fluctuating part cf′.
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页码：593 / 599
页数：6
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