Results 201 to 210 of about 21,854 (248)
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Aeroacoustics of a rotor ingesting a planar boundary layer at high thrust
Journal of Fluid Mechanics, 2018Aeroacoustic measurements and analysis have been made for an unshrouded rotor partially immersed in a planar equilibrium turbulent boundary layer at low Mach number.
Henry Murray +4 more
semanticscholar +1 more source
Energy Conversion and Management, 2018
Aerodynamics and aeroacoustics of a small horizontal axis wind turbine are investigated experimentally and computationally. The purpose has been to develop a procedure to predict and optimize the aerodynamic and aeroacoustic performance of such turbines.
A. Benim +4 more
semanticscholar +1 more source
Aerodynamics and aeroacoustics of a small horizontal axis wind turbine are investigated experimentally and computationally. The purpose has been to develop a procedure to predict and optimize the aerodynamic and aeroacoustic performance of such turbines.
A. Benim +4 more
semanticscholar +1 more source
Acoustics, Aeroacoustics and Vibrations
2016This didactic book presents the main elements of acoustics, aeroacoustics and vibrations.Illustrated with numerous concrete examples linked to solid and fluid continua, Acoustics, Aeroacoustics and Vibrations proposes a selection of applications encountered in the three fields, whether in room acoustics, transport, energy production systems or ...
Anselmet, Fabien, Mattei, Pierre-Olivier
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Identifying Aeroacoustic Sources
13th AIAA/CEAS Aeroacoustics Conference (28th AIAA Aeroacoustics Conference), 2007This paper reconsiders the basic manner in which the aeroacoustic equations have been derived, and proposes an alternative formulation in which we endeavor to separate ’hydrodynamic’ and ’acoustic’ terms, which we treat as synonymous with ‘radiating’ and ‘non-radiating’ mechanisms.
William George +2 more
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Journal of Fluid Mechanics, 2002
A systematic study has been undertaken to quantify the effect of jet temperature on the noise radiated by subsonic jets. Nozzles of different diameters were tested to uncover the effects of Reynolds number. All the tests were carried out at Boeing's Low Speed Aeroacoustic Facility, with simultaneous measurement of thrust and noise. It is concluded that
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A systematic study has been undertaken to quantify the effect of jet temperature on the noise radiated by subsonic jets. Nozzles of different diameters were tested to uncover the effects of Reynolds number. All the tests were carried out at Boeing's Low Speed Aeroacoustic Facility, with simultaneous measurement of thrust and noise. It is concluded that
openaire +1 more source
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2004
The theory of the sibilant fricative [s] is formulated and solved as a mathematical problem of aeroacoustics. Air is forced through the constriction between the tongue blade and the hard palate by intra-oral pressure, forming a jet that strikes the upper incisors and leaves the mouth through a gap between the upper and lower incisors.
Michael S. Howe, Richard S. McGowan
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The theory of the sibilant fricative [s] is formulated and solved as a mathematical problem of aeroacoustics. Air is forced through the constriction between the tongue blade and the hard palate by intra-oral pressure, forming a jet that strikes the upper incisors and leaves the mouth through a gap between the upper and lower incisors.
Michael S. Howe, Richard S. McGowan
openaire +1 more source
Lattice-Boltzmann Calculations of Rotor Aeroacoustics in Transitional Boundary Layer Regime
Advanced Courses, 2022D. Casalino +3 more
semanticscholar +1 more source
2012
Computational aeroacoustics (CAA) is a relatively new research area. CAA algorithms have developed rapidly and the methods have been applied in many areas of aeroacoustics. The objective of CAA is not simply to develop computational methods but also to use these methods to solve practical aeroacoustics problems and to perform numerical simulation of ...
openaire +2 more sources
Computational aeroacoustics (CAA) is a relatively new research area. CAA algorithms have developed rapidly and the methods have been applied in many areas of aeroacoustics. The objective of CAA is not simply to develop computational methods but also to use these methods to solve practical aeroacoustics problems and to perform numerical simulation of ...
openaire +2 more sources
The Journal of the Acoustical Society of America, 2002
Several commercial options exist for prevention of the pseudo-sound often introduced by a microphone in the presence of a flow field. One such device is a so-called ‘‘slit-tube.’’ A slit-tube is a tube approximately the diameter of the microphone with which it is used.
openaire +1 more source
Several commercial options exist for prevention of the pseudo-sound often introduced by a microphone in the presence of a flow field. One such device is a so-called ‘‘slit-tube.’’ A slit-tube is a tube approximately the diameter of the microphone with which it is used.
openaire +1 more source