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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2013

Fast acoustic streaming in standing waves : Generation of an additional outer streaming cell

Résumé

Rayleigh streaming in a cylindrical acoustic standing waveguide is studied both experimentally and numerically for nonlinear Reynolds numbers from 1 to 30. Streaming velocity is measured by means of laser Doppler velocimetry in a cylindrical resonator filled with air at atmospheric pressure at high intensity sound levels. The compressible Navier-Stokes equations are solved numerically with high resolution finite difference schemes. The resonator is excited by shaking it along the axis at imposed frequency. Results of measurements and of numerical calculation are compared with results given in the literature and with each other. As expected, the axial streaming velocity measured and calculated agrees reasonably well with the slow streaming theory for small ReNL but deviates significantly from such predictions for fast streaming (ReNL > 1). Both experimental and numerical results show that when ReNL is increased, the center of the outer streaming cells are pushed toward the acoustic velocity nodes until counter-rotating additional vortices are generated near the acoustic velocity antinodes.
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Dates et versions

hal-01066956 , version 1 (09-10-2017)

Identifiants

  • HAL Id : hal-01066956 , version 1
  • DOI : 10.1121/1.4817888
  • ENSAM : http://hdl.handle.net/10985/8595

Citer

Ida Reyt, Hélène Bailliet, Solène Moreau, Jean-Christophe Valière, Diana G. Baltean Carlès, et al.. Fast acoustic streaming in standing waves : Generation of an additional outer streaming cell. Journal of the Acoustical Society of America, 2013, 134 (3), pp.1791-1801. ⟨10.1121/1.4817888⟩. ⟨hal-01066956⟩
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