TY - GEN
T1 - Turbulence-induced acoustic emission of SCUBA breathing apparatus
AU - Donskoy, D.
AU - Imas, L.
AU - Yen, T.
AU - Sedunov, N.
AU - Tsionskiy, M.
AU - Sedunov, A.
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
KW - Air turbulence
KW - SCUBA acoustic emission
KW - Unterwater noise
UR - http://www.scopus.com/inward/record.url?scp=49249109230&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=49249109230&partnerID=8YFLogxK
U2 - 10.1063/1.2956311
DO - 10.1063/1.2956311
M3 - Conference contribution
AN - SCOPUS:49249109230
SN - 9780735405448
T3 - AIP Conference Proceedings
SP - 95
EP - 98
BT - Nonlinear Acoustics - Fundamentals and Applications - ISNA18 - 18th International Symposium on Nonlinear Acoustics
T2 - 18th International Symposium on Nonlinear Acoustics, ISNA18
Y2 - 7 July 2008 through 10 July 2008
ER -