TY - GEN
T1 - Prediction of sound scattering and radiation using non-negative intensity
AU - Liu, Daipei
AU - Peters, Herwig
AU - Kessissoglou, Nicole
AU - Marburg, Steffen
PY - 2016
Y1 - 2016
N2 - Non-negative intensity is a numerical technique based on acoustic radiation modes and using either the acoustic pressure or normal velocity on the surface of the structure, to identify the surface areas of a structure that contribute to sound power. In contrast to acoustic intensity, nonnegative intensity is always positive. In this work, both scattered and radiated sound of structures submerged in a heavy fluid medium are considered. For the scattering problem, several rigid structures corresponding to a sphere, a cylinder and a hemispherical shell under incident plane wave excitation are examined. For the radiation problem, several elastic structures corresponding to a spherical shell, a cylindrical shell and a hemispherical shell under point force excitation are considered. The scattered and radiated acoustic intensities and non-negative intensities of the aforementioned structures are calculated and compared.
AB - Non-negative intensity is a numerical technique based on acoustic radiation modes and using either the acoustic pressure or normal velocity on the surface of the structure, to identify the surface areas of a structure that contribute to sound power. In contrast to acoustic intensity, nonnegative intensity is always positive. In this work, both scattered and radiated sound of structures submerged in a heavy fluid medium are considered. For the scattering problem, several rigid structures corresponding to a sphere, a cylinder and a hemispherical shell under incident plane wave excitation are examined. For the radiation problem, several elastic structures corresponding to a spherical shell, a cylindrical shell and a hemispherical shell under point force excitation are considered. The scattered and radiated acoustic intensities and non-negative intensities of the aforementioned structures are calculated and compared.
UR - http://www.scopus.com/inward/record.url?scp=84987909755&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84987909755
T3 - ICSV 2016 - 23rd International Congress on Sound and Vibration: From Ancient to Modern Acoustics
BT - ICSV 2016 - 23rd International Congress on Sound and Vibration
PB - International Institute of Acoustics and Vibrations
T2 - 23rd International Congress on Sound and Vibration, ICSV 2016
Y2 - 10 July 2016 through 14 July 2016
ER -