A New Domain Decomposition Approach for the Gust Response Problem

Scott, James R.; Atassi, Hafiz M.; Susan-Resiga, Romeo

doi:10.2514/6.2003-883

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…Recently, GUST3D was upgraded to include a domain decomposition approach [10]. This has led to significant improvements in accuracy.…”

Section: Linearized Benchmark Solutionmentioning

confidence: 99%

Benchmark Solutions for Computational Aeroacoustics (CAA) Code Validation

Scott

2004

Noise Control and Acoustics

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NASA has conducted a series of Computational Aeroacoustics (CAA) Workshops on Benchmark Problems to develop a set of realistic CAA problems that can be used for code validation. In the Third (1999) and Fourth (2003) Workshops, the single airfoil gust response problem, with real geometry effects, was included as one of the benchmark problems. Respondents were asked to calculate the airfoil RMS pressure and far-field acoustic intensity for different airfoil geometries and a wide range of gust frequencies. This paper presents the validated solutions that have been obtained to the benchmark problem, and in addition, compares them with classical flat plate results. It is seen that airfoil geometry has a strong effect on the airfoil unsteady pressure, and a significant effect on the far-field acoustic intensity. Those parts of the benchmark problem that have not yet been adequately solved are identified and presented as a challenge to the CAA research community.

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“…Recently, GUST3D was upgraded to include a domain decomposition approach [10]. This has led to significant improvements in accuracy.…”

Section: Linearized Benchmark Solutionmentioning

confidence: 99%

Benchmark Solutions for Computational Aeroacoustics (CAA) Code Validation

Scott

2004

Noise Control and Acoustics

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“…This extension presents some difficulties, the most important being that the source term and boundary conditions become singular along the aerofoil and wake. This problem was addressed by Atassi & Grzedzinski (1989) who proposed an alternative splitting of the velocity field more suitable for numerical applications (Scott & Atassi 1995;Scott, Atassi & Susan-Resiga 2003). An extension of the model proposed here is actively being developed using Atassi's formulation together with a boundary element method (Zhong et al 2019).…”

Section: Discussionmentioning

confidence: 99%

Scattering of entropy waves into sound by isolated aerofoils

Guzmán-Iñigo

Durán²,

Morgans

2021

J. Fluid Mech.

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“…For evaluation of the sound generated by such interactions, Atassi and co-workers [55], [56], [57] included a Kirchoff surface to extend the mid-field solutions to the acoustic far field. Scott, Atassi and Susan-Resiga [58] further developed the numerical methods for solution of the equations based on this approach by implementing a domain decomposition technique. The resulting GUST3D computer code has been used for analysis and comparison with computational aeroacoustics codes for problems in the generation of noise by vortical gusts.…”

Section: Rapid Distortion Theorymentioning

confidence: 99%

Brief Biography of Dr. Marvin E. Goldstein and a Short Survey of his Contributions to Jet Noise and Rapid Distortion Theory

Leib

2015

International Journal of Aeroacoustics

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This article is a brief biographical outline of Dr. Marvin E. Goldstein's professional career and a short survey of his contributions to two particular areas of aeroacoustics: jet noise and rapid distortion theory. This survey is not exhaustive or complete and is subject to my own personal biases. However, I have attempted to highlight what seem to me to be the most important technical contributions in these areas and tried to give some idea of their impact on the field of aeroacoustics. For the latter, I have described some of the many follow-on works by other researchers who have picked up on Dr. Goldstein's original ideas and mathematical formulations, either through further theoretical development, numerical implementation of the resulting equations or adoption of these approaches to the development of practical noise prediction methods. It is not possible to list all of these here and I offer my apologies in advance to those who do not find their work cited. Among the works cited are publications that have appeared in the last few years as well as work that is currently under way. It is my hope that this review will provide some context to Dr. Goldstein's work in these areas and show its continued influence on research in aeroacoustics.

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A New Domain Decomposition Approach for the Gust Response Problem

Cited by 5 publications

References 19 publications

Benchmark Solutions for Computational Aeroacoustics (CAA) Code Validation

Benchmark Solutions for Computational Aeroacoustics (CAA) Code Validation

Scattering of entropy waves into sound by isolated aerofoils

Brief Biography of Dr. Marvin E. Goldstein and a Short Survey of his Contributions to Jet Noise and Rapid Distortion Theory

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