TY - JOUR
T1 - Modal vibrations of an infinite cylinder in an acoustic halfspace
AU - Hasheminejad, Seyyed M.
AU - Azarpeyvand, Mahdi
PY - 2003/11/1
Y1 - 2003/11/1
N2 - Acoustic radiation from an infinite cylindrical surface vibrating with an arbitrary, time-harmonic surface velocity distribution while positioned near the rigid/compliant boundary of a semi-infinite ideal compressible fluid medium is determined in an exact fashion using the classical method of separation of variables. The formulation utilizes the appropriate wave-field expansions and the method of images along with the pertinent translational addition theorem to develop a closed-form solution in form of infinite series. The analytical results are illustrated with numerical examples in which the cylindrical source, vibrating in the monopole and dipole-like modes, is positioned near the rigid/compliant boundary of a water-filled acoustic halfspace. Subsequently, the basic acoustic field quantities such as the modal acoustic radiation impedance load, radiated far-field pressure and the radiation intensity distribution are evaluated for representative values of the parameters characterizing the system.
AB - Acoustic radiation from an infinite cylindrical surface vibrating with an arbitrary, time-harmonic surface velocity distribution while positioned near the rigid/compliant boundary of a semi-infinite ideal compressible fluid medium is determined in an exact fashion using the classical method of separation of variables. The formulation utilizes the appropriate wave-field expansions and the method of images along with the pertinent translational addition theorem to develop a closed-form solution in form of infinite series. The analytical results are illustrated with numerical examples in which the cylindrical source, vibrating in the monopole and dipole-like modes, is positioned near the rigid/compliant boundary of a water-filled acoustic halfspace. Subsequently, the basic acoustic field quantities such as the modal acoustic radiation impedance load, radiated far-field pressure and the radiation intensity distribution are evaluated for representative values of the parameters characterizing the system.
KW - Acoustic halfspace
KW - Acoustic intensity
KW - Cylindrical source
KW - Radiation impedance
UR - http://www.scopus.com/inward/record.url?scp=0041621865&partnerID=8YFLogxK
U2 - 10.1016/S0020-7225(03)00214-3
DO - 10.1016/S0020-7225(03)00214-3
M3 - Article (Academic Journal)
AN - SCOPUS:0041621865
SN - 0020-7225
VL - 41
SP - 2253
EP - 2271
JO - International Journal of Engineering Science
JF - International Journal of Engineering Science
IS - 19
ER -