Results 131 to 140 of about 304 (177)
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High accuracy algorithms for computational aeroacoustics
32nd Aerospace Sciences Meeting and Exhibit, 1994This paper presents an analysis of high-bandwidth operators developed for use with an essentially nonoscillatory (ENO) method. The spatial operators of a sixth-order ENO code are modified to resolve waves with as few as 7 points per wavelength (PPW) by decreasing the formal order of the algorithm. Numerical and analytical solutions are compared for the
Lockard, David P. +2 more
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Aeroacoustic computation of cylinder wake flow
8th Aeroacoustics Conference, 1983Summary: Sound generation by uniform flow over a cylinder at the Reynolds number of 200 is calculated. The incompressible, time-dependent flowfield is first computed by standard computational fluid dynamics techniques using a stream function/vorticity formulation.
Hardin, Jay C., Lamkin, Stanley L.
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2012
Computational aeroacoustics (CAA) is a relatively new research area. CAA algorithms have developed rapidly and the methods have been applied in many areas of aeroacoustics. The objective of CAA is not simply to develop computational methods but also to use these methods to solve practical aeroacoustics problems and to perform numerical simulation of ...
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Computational aeroacoustics (CAA) is a relatively new research area. CAA algorithms have developed rapidly and the methods have been applied in many areas of aeroacoustics. The objective of CAA is not simply to develop computational methods but also to use these methods to solve practical aeroacoustics problems and to perform numerical simulation of ...
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Computational Aeroacoustics: An Overview of Computational Challenges and Applications
International Journal of Computational Fluid Dynamics, 2004The objective of this paper is to present an overview of recent advances in computational aeroacoustics (CAA). During the last decade, CAA has developed quite independent of computational fluid dynamics (CFD). There are computational issues that are unique to CAA and are, generally, not considered in CFD.
Christopher K W Tam
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Integral methods for computational aeroacoustics
35th Aerospace Sciences Meeting and Exhibit, 1997New surface integral methods for use in computational aeroacoustics are developed and presented. The methods are derived for moving deformable surfaces. These surfaces may be real, solid surfaces, or computational control surfaces. These methods are derived as extensions to the popular Kirchhoff and Ffowcs Williams-Hawkings methods in use today.
Anthony Pilon +3 more
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Green's Functions in Computational Aeroacoustics
International Journal of Aeroacoustics, 2011The theory of Green's functions for the wave and Helmholtz equations is examined with particular attention to their use in aeroacoustics for the extrapolation of acoustic wavefields from numerical flow simulations. In a new synthesis that permits straightforward generalization of previously published results, spatial and temporal windowing functions ...
Morfey, C.L. +2 more
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Computation of aeroacoustic scattering effects
11th Aeroacoustics Conference, 1987Scattering and diffraction phenomena are important problem in aeroacoustics. For this reason, some of the advanced numerical methods developed in Computational Fluid Dynamics are being extended for solving acoustic scattering and diffraction problem involving complex boundaries.
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Cavity Tones by Computational Aeroacoustics
International Journal of Computational Fluid Dynamics, 2004The flow past open cavities is a problem that is encountered in many engineering applications and can result in intense acoustic tones. The flow physics and acoustics of cavity configurations are complex and computational simulation techniques provide an opportunity to gain further understanding and provide a tool to predict not only cavity tone ...
Takeda, K., Shieh, C.M.
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Recent advances of computational aeroacoustics
Applied Mathematics and Mechanics (English Edition), 2014Computational aeroacoustics (CAA) is an interdiscipline of aeroacoustics and computational fluid dynamics (CFD) for the investigation of sound generation and propagation from various aeroacoustics problems. In this review, the foundation and research scope of CAA are introduced firstly.
Xiao-dong Li +5 more
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Recent simulations in computational aeroacoustics
The Journal of the Acoustical Society of America, 1997Computational aeroacoustics involves the direct simulation of noise production and radiation from unsteady flows. Its application to problems of practical interest has depended on both algorithm development and advances in computer technology. This paper presents some recent computational aeroacoustics calculations in several different areas.
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