Author(s): Sandro Longo
Linked Author(s):
Keywords: Free-surface turbulence; Ultrasonic measurements
Abstract: Instantaneous fluid level and the three-components fluid velocity were measured in a stationary flow f ield generated by a Crump weir in a laboratory flume, using an ultrasonic distance sensor and a three probe arrangement of an Acoustic Doppler Velocity Profilers (ADVP), w ith increasing Froude number and free surface of the fluid ranging from f lat to almost aerated. The data were elaborated obtaining the macro-turbulence Reynolds tensor in a reference moving w ith the flu id level. A lso the space auto-correlation of fluid ve locity and the correlations between free surface elevation and flow velocities were computed, adopting conditional averages based on free surface fluctuation statistics. The results guarantee an ins ight of the turbulence interaction with the interface.
Year: 2007