An acoustic technique for Lagrangian velocity measurements - ENS de Lyon - École normale supérieure de Lyon Access content directly
Journal Articles Review of Scientific Instruments Year : 2005

An acoustic technique for Lagrangian velocity measurements


Ultrasonic transducers array can be used to track solid particles advected by a turbulent flow. The simultaneous use of four linear antennas of transducers gives the 3D position of the particles. The extraction of the Doppler frequency shift gives a precise estimation of velocity components. We describe the principle of the technique, the signal conditioning and the acquisition schemes. We show briefly the performances of the technique applied to a turbulent flow at high Reynolds number. The dynamical range of the measurement is over 55 dB and the frequency response spans over 2 decades. These performances allow us to investigate the inertial time scales of Lagrangian turbulence.
Fichier principal
Vignette du fichier
RSI_05.pdf (159.08 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

ensl-00180416 , version 1 (19-10-2007)


  • HAL Id : ensl-00180416 , version 1


Nicolas Mordant, Pascal Metz, Jean-François Pinton, Olivier Michel. An acoustic technique for Lagrangian velocity measurements. Review of Scientific Instruments, 2005, 76 (1), pp.025105. ⟨ensl-00180416⟩
146 View
211 Download


Gmail Facebook Twitter LinkedIn More