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Wall Shear Stress Measurements in Unsteady Turbulent Flow

Author(s): Jose Rodriguez

Linked Author(s): José Rodríguez

Keywords: No Keywords

Abstract: Hot film probes have been used to measure wall shear stress in an experimental facility designed to operate under both steady and unsteady operating conditions. Following a steady state calibration of the sensor, a full dynamic equation was used to obtain the ensemble averaged values of the shear stress in unsteady flow. The results were compared with quasi-steady values obtained using a simplified equation. A lthough the dynamic component was insignificant for the conditions analyzed, its importance is expected to increase as conditions become more unsteady.


Year: 1997

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