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Starting fields and far fields in ocean acoustics

✍ Scribed by Robert P. Gilbert; Yongzhi Xu

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
709 KB
Volume
11
Category
Article
ISSN
0165-2125

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πŸ“œ SIMILAR VOLUMES

Properties of far-field operators in aco
Properties of far-field operators in acoustic scattering
✍ A. Kirsch; G. C. Hsiao πŸ“‚ Article πŸ“… 1989 πŸ› John Wiley and Sons 🌐 English βš– 616 KB

## Communicated by G. C. Hsiao The far-field operator for an exterior boundary value problem for the Helmholtz equation maps the boundary data onto the far-field pattern of the solution. This paper computes the L2-adjoint of this operator for various choices of boundary conditions. In scattering t

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Substantial numerical simulations of low-frequency acoustic field under different ocean models have been carried out on the CYBER-205 at WPL/NOAA. The purpose of these numerical simulations is to investigate our potential ability to monitor large-scale ocean structures by using modal ocean acoustic

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The far-field sound produced by a rigid body in arbitrary motion, with shock discontinuities close to the body, is studied. The analysis is based on the work of Ffowcs Williams and Hawkings [1]. An expression for the far-field sound pressure is obtained in the form of surface and line integrals carr

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## Abstract In this paper we investigate the direct problem associated with the scattering of β€˜plane waves’ from an object submerged in an ocean of finite depth. An integral representation for the Dirichlet problem is found, from which a formula for the far‐field pattern evolves. A density theorem

Domain sensitivity analysis of the acous
Domain sensitivity analysis of the acoustic far-field pattern
✍ Marius Bochniak; Fioralba Cakoni πŸ“‚ Article πŸ“… 2002 πŸ› John Wiley and Sons 🌐 English βš– 163 KB

## Abstract We consider acoustic scattering problems described by the mixed boundary value problem for the scalar Helmholtz equation in the exterior of a 2D bounded domain or in the exterior of a crack. The boundary of the domain is assumed to have a finite set of corner points where the scattered