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- W1973048400 abstract "Flow-excited resonances of the acoustic diametral modes of a cylindrical pipe housing an axi-symmetric shallow cavity are investigated experimentally. The aeroacoustic response of the cavity-pipe combination is studied up to a Mach number of 0.4 and for several ratios of cavity length to its depth. Although the diametral modes do not have a preferred orientation because of the system axi-symmetry, they are found to be strongly excited by any of the first three instability modes of the cavity shear layer. Intense acoustic pressure levels, up to 170 dB, and wide lock-in resonance ranges have been observed. The acoustic pressure and its phase are measured along the cavity circumference to examine the orientation of the excited diametral modes within the un-preferential domain of the axi-symmetric cavity. Preliminary results suggest that the excited modes are stationary at low flow velocities, but they switch to spinning mode pattern at higher velocities." @default.
- W1973048400 created "2016-06-24" @default.
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- W1973048400 date "2006-01-01" @default.
- W1973048400 modified "2023-09-27" @default.
- W1973048400 title "Flow Excitation of Diametral Acoustic Modes of Axisymmetric Cavities" @default.
- W1973048400 doi "https://doi.org/10.1115/pvp2006-icpvt-11-93133" @default.
- W1973048400 hasPublicationYear "2006" @default.
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