Affiliation:
1. School of Informatics, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece
Abstract
The energy transfer process for acoustic propagation and scattering in inhomogeneous, lossy media is rigorously investigated. Two problems are considered: an arbitrarily composed cluster of lossy scatterers, excited by a single point source and a layered, lossy medium excited by an internal point-source distribution. Energy conservation laws and optical theorems are established. The connection of active intensity with the scattering cross section and the relation between reactive intensity and Lagrangian density are determined. Furthermore, the influence of the losses of the involved media to the kinetic energy is unveiled. Reductions to lossless media and near-zero frequency values are derived.
Subject
General Physics and Astronomy,General Engineering,General Mathematics
Reference38 articles.
1. Ueber die reflexion an einer kugelflache;Clebsch A;J. Reine Angew. Math.,1863
2. XVII. On the diffraction of short waves by a rigid sphere
3. Beiträge zur Optik trüber Medien, speziell kolloidaler Metallösungen
4. The incidence of light upon a transparent sphere of dimensions comparable with the wave length;Rayleigh L;Proc. R. Soc. Lond. A,1910
5. Multiple Scattering of Waves