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Measurement of acoustic streaming in a closed-loop traveling wave resonator using laser Doppler velocimetry

Abstract : This paper deals with the measurement of acoustic particle velocity and acoustic streaming velocity in a closed-loop waveguide in which a resonant traveling acoustic wave is sustained by two loudspeakers appropriately controlled in phase and amplitude. An analytical model of the acoustic field and a theoretical estimate of the acoustic streaming are presented. The measurement of acoustic and acoustic streaming velocities is performed using laser Doppler velocimetry. The experimental results obtained show that the curvature of the resonator impacts the acoustic velocity and the profile of acoustic streaming. The quadratic dependence of the acoustic streaming velocity on the acoustic pressure amplitude is verified and the measured cross-sectional average streaming velocity is in good agreement with the value predicted by the theoretical estimate.
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https://hal-univ-lemans.archives-ouvertes.fr/hal-02057435
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Cyril Desjouy, Guillaume Penelet, Pierrick Lotton, James Blondeau. Measurement of acoustic streaming in a closed-loop traveling wave resonator using laser Doppler velocimetry. Journal of the Acoustical Society of America, Acoustical Society of America, 2009, 126 (5), pp.2176-2183. ⟨10.1121/1.3238162⟩. ⟨hal-02057435⟩

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