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Applications of the Mortar Finite Element Method in Vibroacoustics and Flow Induced Noise Computations

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The Mortar Finite Element Method allows the coupling of two or more sub-domains with quite different mesh sizes. We exploit this capability and apply it to real engineering applications in vibroacoustics and aeroacustics. Therewith, we gain the flexibility to choose for each sub-domain an optimal grid. At the nonconforming interfaces appropriate coupling conditions ensure that the physical constraints are captured accurately. With this enhanced method we can couple along the interface the mechanical with the acoustic field as in the case of vibroacoustics and furthermore, we can also couple the same physical field, e.g. acoustics, computed on different grids. The applications will clearly demonstrate the superiority of the Mortar Finite Element Method over the standard Finite Element Method both concerning the flexibility for the mesh generation as well as the computational time.
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Document Type: Research Article

Publication date: May 1, 2010

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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