Journal ArticleDOI
Consistency Tests of Acoustic Propagation Models
E. Jensen,W. A. Kuperman +1 more
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TLDR
In this article, three wave-theory models (NM, FFP, PE) and one ray model are applied to four different ocean environments: a range-dependent surface duct, a deep-water environment with a homogeneous bottom, a shallow-water environments with a shallow bottom, and a sloping-bottom environment having a layered bottom.Abstract:
: Three wave-theory models (NM, FFP, PE) and one ray model are applied to four different ocean environments: a range-dependent surface duct, a deep- water environment with a homogeneous bottom, a shallow-water environment with a homogeneous bottom, and a sloping-bottom environment with a layered bottom. The consistency among the acoustic models is clearly demonstrated through the agreement between model results for the various test problems.read more
Citations
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Journal ArticleDOI
Discrete Transparent Boundary Conditions for Wide Angle Parabolic Equations in Underwater Acoustics
Anton Arnold,Matthias Ehrhardt +1 more
TL;DR: In this paper, a novel discrete boundary condition for wide angle parabolic equations (WAPEs) is derived from the fully discretized whole-space problem that is reflection-free and yields an unconditionally stable scheme.
DissertationDOI
Discrete artificial boundary conditions
TL;DR: In this article, a new discrete boundary condition for convection-diffusion equations and general Schrodinger-type pseudo-differential equations arising from the Parabolic Equation (PE) models is proposed.
Book ChapterDOI
Numerical Models in Underwater Acoustics
TL;DR: The physics of sound propagation in the ocean is briefly reviewed in this article, and the mathematical foundation of the most widely used acoustic models (ray, mode, fast field, parabolic equation) is presented and the areas of applicability of the various models are indicated.
Journal ArticleDOI
Ocean propagation models
TL;DR: In this article, four approaches to underwater sound propagation modelling are reviewed including rays, normal modes, Green's function integral, and parabolic equation, and specific programs are discussed specific problems in running models and the applicability in various regimes, especially deep-water environments.
Journal ArticleDOI
On galerkin methods for the wide-angle parabolic equation
TL;DR: In this article, the authors considered the third-order, wide-angle parabolic approximation of underwater acoustics in a medium with depth and range-dependent speed of sound in the presence of dissipation and horizontal interfaces.
References
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Journal ArticleDOI
Discrete Transparent Boundary Conditions for Wide Angle Parabolic Equations in Underwater Acoustics
Anton Arnold,Matthias Ehrhardt +1 more
TL;DR: In this paper, a novel discrete boundary condition for wide angle parabolic equations (WAPEs) is derived from the fully discretized whole-space problem that is reflection-free and yields an unconditionally stable scheme.
DissertationDOI
Discrete artificial boundary conditions
TL;DR: In this article, a new discrete boundary condition for convection-diffusion equations and general Schrodinger-type pseudo-differential equations arising from the Parabolic Equation (PE) models is proposed.
Book ChapterDOI
Numerical Models in Underwater Acoustics
TL;DR: The physics of sound propagation in the ocean is briefly reviewed in this article, and the mathematical foundation of the most widely used acoustic models (ray, mode, fast field, parabolic equation) is presented and the areas of applicability of the various models are indicated.
Journal ArticleDOI
Ocean propagation models
TL;DR: In this article, four approaches to underwater sound propagation modelling are reviewed including rays, normal modes, Green's function integral, and parabolic equation, and specific programs are discussed specific problems in running models and the applicability in various regimes, especially deep-water environments.
Journal ArticleDOI
On galerkin methods for the wide-angle parabolic equation
TL;DR: In this article, the authors considered the third-order, wide-angle parabolic approximation of underwater acoustics in a medium with depth and range-dependent speed of sound in the presence of dissipation and horizontal interfaces.