Reflection and transmission by randomly spaced elastic cylinders in a fluid slab-like region

摘要: An extension of Fikioris and Waterman’s formalism is developed in order to describe both the reflection transmission from a slab-like fluid region which elastic cylindrical scatterers are randomly placed. The dispersion equation coherent wave inside slab must be solved numerically. For solid cylinders, there only one solution corresponding mean free path larger than wavelength. In that case, may described as an effective dissipative medium, its coefficients formally written those plate. thin hollow shells, second found, at concentrations large enough for shells coupled via radiation circumferential Scholte–Stoneley A on each shell. This occurs few resonance frequencies shells. At frequencies, then, two different waves propagate slab, it can no longer considered dissipa...