Numerical prediction of aerodynamic noise radiated from low Mach number turbulent wake

Kato, Chisachi; Iida, Akiyoshi; Takano, Yasushi; Fujita, Hideaki; Ikegawa, Masahiro

doi:10.2514/6.1993-145

Cited by 88 publications

(98 citation statements)

References 6 publications

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“…Due to the high Reynolds numbers involved in this problem, a Smagorinsky turbulence model is used [25]. The time-accurate computation was carried out on a Thinking Machines CM-5.…”

Section: Example Problemmentioning

confidence: 99%

Advanced mesh generation and update methods for 3D flow simulations

Johnson

Tezduyar

1999

Computational Mechanics

215

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Advanced mesh generation and update methods for parallel 3D computation of complex¯ow problems are presented. The complexities of the class of problems targeted include complex geometries, unsteady behavior, and moving boundaries and interfaces, such as those encountered in¯uid-object interactions. Parallel 3D simulation of 1000 spheres falling in a liquid-®lled tube, and other computations, are presented in this paper to demonstrate the challenges involved in this class of¯ow problems and the methods developed to address these challenges.

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“…Due to the high Reynolds numbers involved in this problem, a Smagorinsky turbulence model is used [25]. The time-accurate computation was carried out on a Thinking Machines CM-5.…”

Section: Example Problemmentioning

confidence: 99%

Advanced mesh generation and update methods for 3D flow simulations

Johnson

Tezduyar

1999

Computational Mechanics

215

View full text Add to dashboard Cite

show abstract

“…The high frequency components largely overestimate the sound level, which is not surprising, considering that the planar approach cannot take into account the spanwise coherence of the pressure fluctuations. Therefore a coherence weighted amplitude estimation based on the measured spanwise coherence (see Appendix) was carried out, following the model proposed by Kato et al [39] and further developed by Perot et al [40] and Seo et al [41]. The crosses at 400, 500, 600, 750, 900 and 1000 Hz represent the acoustic prediction based on the measured spanwise coherence length.…”

Section: Acoustic Predictionmentioning

confidence: 99%

On the use of time-resolved particle image velocimetry for the investigation of rod–airfoil aeroacoustics

Lorenzoni¹,

Tuinstra²,

Scarano³

2012

Journal of Sound and Vibration

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“…In such cases, some corrections have to be introduced to the numerical sound pressure level (SPL). In the paper, we use the correction method firstly proposed by Kato [15,22].…”

Section: Sound Pressure Level Correctionmentioning

confidence: 99%

Numerical Investigation on Vortex‐Structure Interaction Generating Aerodynamic Noises for Rod‐Airfoil Models

Liu

Jiang

Chen

et al. 2017

Mathematical Problems in Engineering

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In past several decades, vortex-structure interaction generated aerodynamic noise became one of the main concerns in aircraft design. In order to understand the mechanism, the acoustic analogy method combined with the RANS-based nonlinear acoustics solver (NLAS) is investigated. The numerical method is firstly evaluated by the experiment data of the classic rod-airfoil model. Compared with the traditional analogy methods, the RANS/NLAS can capture the nonlinear aerodynamic noise more accurately with lower gird requirements. Then different rod-airfoil configurations were simulated to investigate the aeroacoustic interaction effects. The numerical results are in good agreement with those of the earlier experimental research. It is found that the vortexshedding crash to the airfoil is the main reason for the noise generation which is dependent on the configurations, distance, and flow conditions.

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Numerical prediction of aerodynamic noise radiated from low Mach number turbulent wake

Cited by 88 publications

References 6 publications

Advanced mesh generation and update methods for 3D flow simulations

Advanced mesh generation and update methods for 3D flow simulations

On the use of time-resolved particle image velocimetry for the investigation of rod–airfoil aeroacoustics

Numerical Investigation on Vortex‐Structure Interaction Generating Aerodynamic Noises for Rod‐Airfoil Models

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