A time domain model of scattering from small discrete volume particles: tank validation

Gaetano Canepa (1) , Jean-Pierre Sessarego (2) , Alessandra Teseï (1) , Régine Guillermin (2) , Raymond Soukup (3)

1 NURC - NATO Undersea Research Centre
2 LMA - Laboratoire de Mécanique et d'Acoustique [Marseille]
3 NRL - Naval Research Laboratory

A time domain model of scattering from small discrete particles embedded in a sediment volume is presented here with an experimental validation. The model is implemented on the backbone of the BORIS-3D model which originally included only surface scattering and volume scattering from small perturbations of the volume density and sound speed. The experimental data for validation were collected in a tank using a silicon plate in which 10% of the volume is occupied by spherical glass beads 1mm in diameter. This work is focused on the time domain evolution of the scattered echo. We got a very good agreement between simulated and experimental data in both amplitude and shape.

Mots clés: Scattering from discrete particles; Boris 3-D model

Domaines: Acoustique [physics.class-ph]; Acoustique [physics.class-ph]

Gaetano Canepa, Jean-Pierre Sessarego, Alessandra Teseï, Régine Guillermin, Raymond Soukup. A time domain model of scattering from small discrete volume particles: tank validation. 9th European Conference in Underwater Acoustics, Jul 2008, Paris, France. pp.453-458. ⟨hal-00455604⟩