Journal ArticleDOI
An efficient, two-dimensional implementation of the ffowcs williams and hawkings equation
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TLDR
In this article, a two-dimensional formulation of the Ffowcs Williams and Hawkings equation in the frequency domain is presented, which is capable of predicting the farfield noise from non-linear nearfield flow quantities.About:
This article is published in Journal of Sound and Vibration.The article was published on 2000-01-27. It has received 210 citations till now. The article focuses on the topics: Aeroacoustics & Noise.read more
Citations
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Journal ArticleDOI
Computational aeroacoustics: progress on nonlinear problems of sound generation
Tim Colonius,Sanjiva K. Lele +1 more
TL;DR: A hierarchy of computational approaches that range from semi-empirical schemes that estimate the noise sources using mean-flow and turbulence statistics, to high-fidelity unsteady flow simulations that resolve the sound generation process by direct application of the fundamental conservation principles is discussed in this paper.
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Surface integral methods in computational aeroacoustics—From the (CFD) near-field to the (Acoustic) far-field
TL;DR: A review of recent advances in the use of surface integral methods in Computational AeroAcoustics (CAA) for the extension of near-field CFD results to the acoustic far-field is given in this paper.
Journal ArticleDOI
Unstructured Large-Eddy Simulations of Supersonic Jets
TL;DR: In this paper, experience gained from previous jet noise studies with the unstructured large-eddy simulation flow solver "Charles" is summarized and put to practice for the predictions of supersonic jets issued f...
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Direct computation of the noise radiated by a subsonic cavity flow and application of integral methods
TL;DR: In this paper, the authors investigate the acoustic field generated by the flow over a cavity using two different and complementary numerical methods: direct numerical simulation and wave extrapolation from a control surface.
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Importance of the nozzle-exit boundary-layer state in subsonic turbulent jets
Guillaume A. Brès,Peter Jordan,Vincent Jaunet,Maxime Le Rallic,André V. G. Cavalieri,Aaron Towne,Sanjiva K. Lele,Tim Colonius,Oliver T. Schmidt +8 more
TL;DR: In this paper, large-eddy simulations of an isothermal Mach 0.9 jet issued from a convergent-straight nozzle are performed at a diameter-based Reynolds number of 1 x 10^6.
References
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Journal ArticleDOI
Sound Generation by Turbulence and Surfaces in Arbitrary Motion
TL;DR: In this article, sound generation by turbulence and surfaces in arbitrary motion is discussed, and sound and multipole fields and governing equations are discussed. But sound generation is not discussed in this paper.
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Analytical Comparison of the Acoustic Analogy and Kirchhoff Formulation for Moving Surfaces
TL;DR: In this article, the Lighthill acoustic analogy, as embodied in the Ffowcs Williams-Hawkings (FW-H) equation, is compared with the Kirchhoff formulation for moving surfaces.
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A new boundary integral formulation for the prediction of sound radiation
TL;DR: In this article, a boundary integral formulation is presented for the evaluation of the noise radiated in a uniform medium by generic sources, which is referred as the Kirchhoff-FWH method.