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

Autor: M. Schober, E. Obermeier, S. Pirskawetz, H.-H. Fernholz
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Zdroj: Experiments in Fluids; Apr2004, Vol. 36 Issue 4, p593-599, 7p
Abstrakt: 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= t w=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 c f but also reveal some discrepancies for the fluctuating part c f'. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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