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Numerical Modeling of the Acoustic Propagation in a Three-Dimensional Wave Guide in the Presence of Flow

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Abstract:

The development of new technologies to reduce the noise radiation demands the modeling of the acoustic propagation inside these elements. In this paper a numerical method of modeling of the sound propagation in circular and rectangular cross section ducts in the presence of flow was developed and presented. This method is based on a there dimensional finite element formulation. From this formulation, the pressure acoustic field inside the duct was determined for several incident acoustic modes. The results are compared to an analytical solution and show the validity of numerical implementation furthermore they illustrate the flow eff ects of the fluid.

Document Type: Research Article

DOI: http://dx.doi.org/10.3813/AAA.918426

Publication date: May 1, 2011

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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