TY - JOUR
T1 - Sound amplification and flow noise reduction with acoustic velocity horns
AU - Donskoy, Dimitri M.
AU - Hassan, Scott E.
N1 - Publisher Copyright:
© 2014 Acoustical Society of America.
PY - 2014/11/1
Y1 - 2014/11/1
N2 - Small wavelength size acoustic velocity horns (AVH) were recently introduced, [1], as particle velocity amplifiers having flat amplitude and phase frequency responses below their first resonance. AVH predicted amplification characteristics have been experimentally verified, [2, 3], demonstrating interesting opportunities for vector sensors (VS) sensitivity enhancement. Present work provides enhanced analysis of amplification and characteristics of complex shape horns. Additionally, we address another AVH feature: turbulence flow noise reduction due to turbulence field spatial averaging across horn's mouth area. Numerical analysis demonstrated up to 25 dB convective turbulent pressure and velocity reduction at the horn throat.
AB - Small wavelength size acoustic velocity horns (AVH) were recently introduced, [1], as particle velocity amplifiers having flat amplitude and phase frequency responses below their first resonance. AVH predicted amplification characteristics have been experimentally verified, [2, 3], demonstrating interesting opportunities for vector sensors (VS) sensitivity enhancement. Present work provides enhanced analysis of amplification and characteristics of complex shape horns. Additionally, we address another AVH feature: turbulence flow noise reduction due to turbulence field spatial averaging across horn's mouth area. Numerical analysis demonstrated up to 25 dB convective turbulent pressure and velocity reduction at the horn throat.
UR - http://www.scopus.com/inward/record.url?scp=84919326866&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84919326866&partnerID=8YFLogxK
U2 - 10.1121/1.4896037
DO - 10.1121/1.4896037
M3 - Conference article
AN - SCOPUS:84919326866
SN - 1939-800X
VL - 21
JO - Proceedings of Meetings on Acoustics
JF - Proceedings of Meetings on Acoustics
IS - 1
M1 - 4pUW8
T2 - 167th Meeting of the Acoustical Society of America
Y2 - 5 May 2014 through 9 May 2014
ER -