Effect of Nozzle Shape on Amplitude of Well Acoustic Emitter Generation

An experimental study of the generation of pressure fluctuations in a well acoustic emitter with nozzles of various shapes has been carried out. The effect of a smooth nozzle inlet section on the generation amplitude, the optimum jet length, and the outlet diameter has been studied. The formation of...

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Bibliographic Details
Published in:Acoustical physics 2018-07, Vol.64 (4), p.492-502
Main Authors: Abdrashitov, A. A., Marfin, E. A., Chachkov, D. V., Chefanov, V. M.
Format: Article
Language:English
Subjects:
Acoustic emission
Acoustics
Amplitudes
Atmospheric and Aeroacoustics
Emitters
Nozzles
Physics
Physics and Astronomy
Shape effects
Variations
Velocity distribution
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Summary:An experimental study of the generation of pressure fluctuations in a well acoustic emitter with nozzles of various shapes has been carried out. The effect of a smooth nozzle inlet section on the generation amplitude, the optimum jet length, and the outlet diameter has been studied. The formation of a region of reverse currents connecting to the cavity in the nozzle between the channel wall and the jet periphery has been considered. A significant increase in the generation amplitude produced at the smooth nozzle inlet and the formation of a uniform velocity profile in the nozzle channel have been observed.
ISSN:1063-7710
1562-6865
DOI:10.1134/S1063771018030016