Turbulence-induced acoustic emission of SCUBA breathing apparatus

Dimitri Donskoy, L. Imas, T. Yen, N. Sedunov, M. Tsionskiy, A. Sedunov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Our initial study, [1], demonstrated that the primary originating source of vibration and subsequent acoustic emission from an underwater breathing apparatus is turbulent air flow pressure fluctuations occurring during the inhale phase of breathing. The process of energy release associated with the expansion of compressed air in the high pressure scuba tank, through the first stage regulator, results in a highly turbulent, unsteady, compressible air flow. The paper presents results of experimental investigation and fluid dynamic simulation of turbulence-induced acoustic emission. The simulation reveals complex supersonic flow within the regulator's valve and channel topology. The associated regulator's air turbulent pressure pulsations and underwater acoustic emission are observed in a broadband frequency range.

Original languageEnglish (US)
Title of host publicationNonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics
Pages95-98
Number of pages4
Volume1022
DOIs
StatePublished - Aug 18 2008
Event18th International Symposium on Nonlinear Acoustics, ISNA18 - Stockholm, Sweden
Duration: Jul 7 2008Jul 10 2008

Other

Other18th International Symposium on Nonlinear Acoustics, ISNA18
CountrySweden
CityStockholm
Period7/7/087/10/08

Fingerprint

breathing apparatus
regulators
acoustic emission
turbulence
air flow
underwater breathing apparatus
compressed air
underwater acoustics
supersonic flow
fluid dynamics
breathing
topology
simulation
frequency ranges
broadband
vibration
expansion
acoustics
air
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Donskoy, D., Imas, L., Yen, T., Sedunov, N., Tsionskiy, M., & Sedunov, A. (2008). Turbulence-induced acoustic emission of SCUBA breathing apparatus. In Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics (Vol. 1022, pp. 95-98) https://doi.org/10.1063/1.2956311
Donskoy, Dimitri ; Imas, L. ; Yen, T. ; Sedunov, N. ; Tsionskiy, M. ; Sedunov, A. / Turbulence-induced acoustic emission of SCUBA breathing apparatus. Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics. Vol. 1022 2008. pp. 95-98
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Donskoy, D, Imas, L, Yen, T, Sedunov, N, Tsionskiy, M & Sedunov, A 2008, Turbulence-induced acoustic emission of SCUBA breathing apparatus. in Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics. vol. 1022, pp. 95-98, 18th International Symposium on Nonlinear Acoustics, ISNA18, Stockholm, Sweden, 7/7/08. https://doi.org/10.1063/1.2956311

Turbulence-induced acoustic emission of SCUBA breathing apparatus. / Donskoy, Dimitri; Imas, L.; Yen, T.; Sedunov, N.; Tsionskiy, M.; Sedunov, A.

Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics. Vol. 1022 2008. p. 95-98.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Donskoy D, Imas L, Yen T, Sedunov N, Tsionskiy M, Sedunov A. Turbulence-induced acoustic emission of SCUBA breathing apparatus. In Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics. Vol. 1022. 2008. p. 95-98 https://doi.org/10.1063/1.2956311