Algorithmic extensions of low-dispersion scheme and modeling effects for acoustic wave simulation

Dinesh K. Kaushik, Oktay Baysal

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Accurate computation of acoustic wave propagation may be more efficiently performed when their dispersion relations are considered. Consequently, computational algorithms which attempt to preserve these relations have been gaining popularity in recent years. In the present paper, the extensions to one such scheme are discussed. By solving the linearized, 2-D Euler and Navier-Stokes equations with such a method for the acoustic wave propagation, several issues were investigated. Among them were higher-order accuracy, choice of boundary conditions and differencing stencils, effects of viscosity, low-storage time integration, generalized curvilinear coordinates, periodic sources, their reflections and interference patterns from a flat wall and scattering from a circular cylinder. The results were found to be promising en route to the aroacoustic simulations of realistic engineering problems..

Original languageEnglish
Pages (from-to)503-506
Number of pages4
JournalAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
Volume238
Publication statusPublished - 1996
Externally publishedYes

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Acoustic wave propagation
Acoustic waves
Circular cylinders
Navier Stokes equations
Boundary conditions
Scattering
Viscosity

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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abstract = "Accurate computation of acoustic wave propagation may be more efficiently performed when their dispersion relations are considered. Consequently, computational algorithms which attempt to preserve these relations have been gaining popularity in recent years. In the present paper, the extensions to one such scheme are discussed. By solving the linearized, 2-D Euler and Navier-Stokes equations with such a method for the acoustic wave propagation, several issues were investigated. Among them were higher-order accuracy, choice of boundary conditions and differencing stencils, effects of viscosity, low-storage time integration, generalized curvilinear coordinates, periodic sources, their reflections and interference patterns from a flat wall and scattering from a circular cylinder. The results were found to be promising en route to the aroacoustic simulations of realistic engineering problems..",
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AB - Accurate computation of acoustic wave propagation may be more efficiently performed when their dispersion relations are considered. Consequently, computational algorithms which attempt to preserve these relations have been gaining popularity in recent years. In the present paper, the extensions to one such scheme are discussed. By solving the linearized, 2-D Euler and Navier-Stokes equations with such a method for the acoustic wave propagation, several issues were investigated. Among them were higher-order accuracy, choice of boundary conditions and differencing stencils, effects of viscosity, low-storage time integration, generalized curvilinear coordinates, periodic sources, their reflections and interference patterns from a flat wall and scattering from a circular cylinder. The results were found to be promising en route to the aroacoustic simulations of realistic engineering problems..

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