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A forward advancing wave expansion method for numerical solution of large-scale sound propagation problems
Rolla, Leandro Miguel Barrera
THESIS 8115 The study of atmospheric somid propagation has become an important subject since noise polhition problems emerged as a highly relevant matter in several areas such as sociology, economics, regulations and standards. Modelling sound propagation over large domains represents a major challenge for current numerical tools due the large computational resources required to obtain accurate solutions. In this thesis a ?one-way? wave based field discretization method for solving the Helmholtz equation in large-scale problems is proposed and is referred to as the Forward Wave Expansion Method (FWEM). The FWEM is derived from a highly efficient discretization procedure based on interpolation of wave functions known as the Wave Expansion Method (WEM). The Wave Expansion Method (WEM) is a very flexible, efficient full field method for solving the Helmholtz equation, which uses mesh densities as low as 3 nodes per wavelength and can model complicated ground topography, ground impedance inhomogeneities and inhomogeneous moving media.
Keyword(s): Mechanical Engineering, Ph.D.; Ph.D. Trinity College Dublin
Publication Date:
2007
Type: Doctoral thesis
Peer-Reviewed: Unknown
Language(s): English
Institution: Trinity College Dublin
Citation(s): Leandro Miguel Barrera Rolla, 'A forward advancing wave expansion method for numerical solution of large-scale sound propagation problems', [thesis], Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2007, pp 254
Publisher(s): Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering
Supervisor(s): Rice, Henry
First Indexed: 2017-01-04 06:22:44 Last Updated: 2018-08-24 06:34:13