Numerical characterization of landing gear aeroacoustics using advanced simulation and analysis techniques

Redonnet, Stephane; Khelil, Saloua Ben; Bulté, Jean; Cunha, Guilherme

doi:10.1016/j.jsv.2017.05.012

Cited by 16 publications

(7 citation statements)

References 45 publications

(121 reference statements)

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“…This so-called Immersed Boundary Method (IBM) is particularly efficient to evaluate acoustic engine installation effects on novel aircraft architectures. The methodology consists in, first, computing the mean flow around the geometry of interest with the CFD solver FastS [1], then use the CAA solver sAbrinA v0 [2] to compute the propagation of acoustic waves generated by any kind of noise source. Both solvers are used in Cartesian mode, and have their IBM preprocess based on the Cassiopee package [1].…”

Section: Numerical Study Of Fan Noise Installation Effects Using the Immersed Boundary Methodsmentioning

confidence: 99%

Aeroacoustics research in Europe: The CEAS-ASC report on 2018 highlights

Gely

Bennett

2019

Journal of Sound and Vibration

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The Council of European Aerospace Societies (CEAS) Aeroacoustics Specialists Committee (ASC) supports and promotes the interests of the scientific and industrial aeroacoustics community on an European scale and European aeronautics activities internationally. In this context, "aeroacoustics" encompasses all aerospace acoustics and related areas. Each year the committee highlights some of the research and development projects in Europe.This paper is a report on highlights of aeroacoustics research in Europe in 2018, compiled from information provided to the ASC of the CEAS. During 2018, a number of research programmes involving aeroacoustics were funded by the European Commission. Some of the highlights from these programmes are summarised in this article, as well as highlights from other programmes funded by national programmes or by industry. Furthermore, a concise summary of the CEAS-ASC workshop "Future Aircraft Design and Noise Impact" held in the Netherlands Aerospace Centre (NLR) Amsterdam in September 2018 is included in this report.Enquiries concerning all contributions should be addressed to the authors who are given at the end of each subsection.

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Section: Numerical Study Of Fan Noise Installation Effects Using the Immersed Boundary Methodsmentioning

confidence: 99%

Aeroacoustics research in Europe: The CEAS-ASC report on 2018 highlights

Gely

Bennett

2019

Journal of Sound and Vibration

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“…As the first step of the hybrid scenario, the noise generation stage was simulated through 3D unsteady compressible CFD calculations [17,32], which relied on the so-called zonal detached eddy simulation (ZDES) approach, for which ONERA's elsA solver [31] was used.…”

Section: B Numerical Characterization Of the Aeroacoustics Of The Nomentioning

confidence: 99%

“…After that, the CFDbased noise generation stage previously simulated was weakly coupled with a CAA-based noise propagation one, the latter conducted using ONERA's sAbrinA solver [34][35][36], which is a timedomain CAA code that solves the perturbed nonlinear Euler equations using high-order finite-differences schemes. The 19th and 21st AIAA Aeroacoustic Conference provided an opportunity to present these CFD-CAA hybrid calculations and outcomes [33,37], which were then thoroughly documented in a dedicated journal paper [32] and are briefly summarized hereafter.…”

Section: B Numerical Characterization Of the Aeroacoustics Of The Nomentioning

confidence: 99%

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Landing Gear Noise Identification Using Phased Array with Experimental and Computational Data

Bulté

Redonnet

2017

AIAA Journal

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In regard to aircraft noise mitigation, this paper focuses on noise emission by a simplified nose landing gear (NLG), whose noise sources are identified by the means of sensor array methods. More precisely, following a former characterization of the aeroacoustics by the NLG via dedicated experiments and computations, the subsequent experimental and numerical noise signals are applied two popular sensor array methods of noise localization, namely, classical beam forming (CBF) and deconvolution approach for the mapping of acoustic sources (DAMAS). The resulting noise source maps are then analyzed from both the points of view of phenomenology (NLG noise generation mechanisms) and methodology (noise localization methods and application). The results show how sensor array methods (more especially DAMAS) are capable of revealing the underlying physics of the NLG noise source mechanisms, whether it is within an experimental or a computational context. This speaks in favor of a more systematic use of sensor array methods for investigating the noise physics of aircraft components.

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“…Numerical methods are not only used for structural purposes. Redonnet et al [13] proposed a numerical characterization of the aeroacoustics by a simplified nose landing gear, through the use of advanced simulation and signal processing techniques. To this end, the NLG noise physics is first simulated through an advanced hybrid approach, which relies on Computational Fluid Dynamics (CFD) and Computational AeroAcoustics (CAA) calculations.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the static and dynamic structural behaviors of a regional aircraft main landing gear by a new numerical methodology

Caputo

Luca

Greco

et al. 2017

Frattura Ed Integrità Strutturale

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In this paper, a new methodology supporting the design of landing gears is proposed. Generally, a preliminary step is performed with simplified FE model, usually one-dimensional, to achieve the reaction forces involving each component during all aforementioned aircraft operations. Though this approach gives a valid support to the designer, it is characterized by several problems, such as the related approximations. So, it is important, by a numerical point of view, to develop an isostatic FE model equivalent to the real one. In fact, if the landing gear is modelled as hyperstatic, the static equilibrium equations are insufficient for determining the internal forces and reactions on each sub-component; so, the modelled material properties and geometries assume an increasing importance, which gets the model too approximating. The proposed methodology consists of achieving the reaction forces by means of multibody simulations, by overcoming such problems, since each component is modelled as rigid. In this paper, also a FE model for the investigation of the structural response is proposed. Aimed to Certification by Analysis purposes, the developed multibody and the FE models have been assessed against an experimental landing gear drop test carried out by Magnaghi Aeronautica S.p.A., according to the EASA CS 25 regulations. Investigation on the static and dynamic structural behaviors of a regional aircraft main landing gear by a new numerical methodology, Frattura ed Integrità Strutturale, 43 (2018) 191-204.

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Numerical characterization of landing gear aeroacoustics using advanced simulation and analysis techniques

Cited by 16 publications

References 45 publications

Aeroacoustics research in Europe: The CEAS-ASC report on 2018 highlights

Aeroacoustics research in Europe: The CEAS-ASC report on 2018 highlights

Landing Gear Noise Identification Using Phased Array with Experimental and Computational Data

Investigation on the static and dynamic structural behaviors of a regional aircraft main landing gear by a new numerical methodology

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