Parallel distributed numerical simulations in aeronautic applications

Alléon, Guillaume; Champagneux, S.; Chevalier, G.; Giraud, Luc; Sylvand, Guillaume

doi:10.1016/j.apm.2005.06.014

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…While the BEM clearly cannot represent the flow physics fully, it can be applied to three-dimensional intakes at acceptable cost [27,28]. The interest in BEM for such calculations has increased recently with the development of efficient Fast Multipole Methods (FMM), such as that implemented in the EADS/AIRBUS BE code actipole [29,30].…”

Section: Boundary Element Methods (Bem)mentioning

confidence: 99%

A review of CAA for fan duct propagation and radiation, with application to liner optimisation

Astley

Sugimoto

Achunche

et al. 2010

Procedia Engineering

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This article reviews the application of Computational Aero-Acoustics (CAA) to the prediction of acoustic propagation in turbofan ducts. The challenge of resolving the radiated sound field for realistic nacelle geometries is discussed and evidence is presented to indicate that current CAA is able to represent the effect of in-duct liners on far-field measured rig and engine data. Two approaches are presented for incorporating CAA predictions within liner optimisation schemes for a turbofan intake.

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Section: Boundary Element Methods (Bem)mentioning

confidence: 99%

A review of CAA for fan duct propagation and radiation, with application to liner optimisation

Astley

Sugimoto

Achunche

et al. 2010

Procedia Engineering

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“…While the BEM clearly does not represent the flow physics fully, because of the assumption of uniform flow, it is nonetheless a valuable approximate tool which can be applied to fully three-dimensional intakes at acceptable cost, and has been used for this purpose in recent years [50,51]. Interest in the use of BEM for such calculations has increased with improvements in performance through the use of Fast Multipole Methods (FMM), implemented for example in the EADS/AIRBUS BE code actipole [52,53].…”

Section: Boundary Element Methodsmentioning

confidence: 99%

Numerical methods for noise propagation in moving flows, with application to turbofan engines

Astley

2009

Acoust. Sci. & Tech.

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This article reviews the development and application of Computational AeroAcoustics (CAA) to acoustic propagation on subsonic mean flows, with a particular focus on methods used to predict acoustic radiation from turbofan aeroengines. The governing equations are presented and particular issues such as the formulation of impedance and far field boundary conditions, the treament of Kelvin-Helmholtz instabilities, resolution requirements and methods for controlling dispersion error, are discussed. The status of current CAA methods is reviewed. Finally, the matter of validation against benchmark problems and measured data is explored.

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“…The standard exterior BEM in a vibro-acoustic settting has been applied in aircraft noise [210,211]. The wave Equation 1 [47,48,[302][303][304] and, similarly, to underwater vehicles [305,306].…”

Section: Aero-acousticsmentioning

confidence: 99%

“…The computational resources include the computer processing time and/or the memory requirements. One approach for improving the execution time of numerical methods is to use parallel processing, so that instructions are executed simultaneously, rather than sequentially, and such techniques have been applied in the boundary element method [304,344].…”

Section: Efficiencymentioning

confidence: 99%

The Boundary Element Method in Acoustics: A Survey

Kirkup

2019

Applied Sciences

108

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The boundary element method (BEM) in the context of acoustics or Helmholtz problems is reviewed in this paper. The basis of the BEM is initially developed for Laplace’s equation. The boundary integral equation formulations for the standard interior and exterior acoustic problems are stated and the boundary element methods are derived through collocation. It is shown how interior modal analysis can be carried out via the boundary element method. Further extensions in the BEM in acoustics are also reviewed, including half-space problems and modelling the acoustic field surrounding thin screens. Current research in linking the boundary element method to other methods in order to solve coupled vibro-acoustic and aero-acoustic problems and methods for solving inverse problems via the BEM are surveyed. Applications of the BEM in each area of acoustics are referenced. The computational complexity of the problem is considered and methods for improving its general efficiency are reviewed. The significant maintenance issues of the standard exterior acoustic solution are considered, in particular the weighting parameter in combined formulations such as Burton and Miller’s equation. The commonality of the integral operators across formulations and hence the potential for development of a software library approach is emphasised.

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Parallel distributed numerical simulations in aeronautic applications

Cited by 8 publications

References 20 publications

A review of CAA for fan duct propagation and radiation, with application to liner optimisation

A review of CAA for fan duct propagation and radiation, with application to liner optimisation

Numerical methods for noise propagation in moving flows, with application to turbofan engines

The Boundary Element Method in Acoustics: A Survey

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