High efficiency method for calculating the aeroacoustic noise of transonic rotors

Wenping Song; Zhonghua Han; Aiming Yang; Zhide Qiao

High efficiency method for calculating the aeroacoustic noise of transonic rotors

Wenping Song, Zhonghua Han, Aiming Yang, Zhide Qiao

航空学院

Northwestern Polytechnical University Xian

科研成果: 期刊稿件 › 文章 › 同行评审

1 引用（Scopus）

摘要

Based on the 3D unsteady Euler equation of a hovering rotor flow, the far field noise was calculated by Kirchhoff formula. How to interpolate sonic pressure, its spatial derivative and time derivative on the Kirchhoff surface was discussed. A high efficient 3D linear interpolation method was proposed. Simulation results for UH-1H helicopter rotor as an example show that the numerical results are in good agreement with experimental data. The choice of Kirchhoff surface position has some effect on the computed results of sonic pressure.

源语言	英语
页（从-至）	515-519
页数	5
期刊	Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University
卷	19
期	4
出版状态	已出版 - 11月 2001

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abstract = "Based on the 3D unsteady Euler equation of a hovering rotor flow, the far field noise was calculated by Kirchhoff formula. How to interpolate sonic pressure, its spatial derivative and time derivative on the Kirchhoff surface was discussed. A high efficient 3D linear interpolation method was proposed. Simulation results for UH-1H helicopter rotor as an example show that the numerical results are in good agreement with experimental data. The choice of Kirchhoff surface position has some effect on the computed results of sonic pressure.",

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AU - Han, Zhonghua

AU - Yang, Aiming

AU - Qiao, Zhide

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Y1 - 2001/11

N2 - Based on the 3D unsteady Euler equation of a hovering rotor flow, the far field noise was calculated by Kirchhoff formula. How to interpolate sonic pressure, its spatial derivative and time derivative on the Kirchhoff surface was discussed. A high efficient 3D linear interpolation method was proposed. Simulation results for UH-1H helicopter rotor as an example show that the numerical results are in good agreement with experimental data. The choice of Kirchhoff surface position has some effect on the computed results of sonic pressure.

AB - Based on the 3D unsteady Euler equation of a hovering rotor flow, the far field noise was calculated by Kirchhoff formula. How to interpolate sonic pressure, its spatial derivative and time derivative on the Kirchhoff surface was discussed. A high efficient 3D linear interpolation method was proposed. Simulation results for UH-1H helicopter rotor as an example show that the numerical results are in good agreement with experimental data. The choice of Kirchhoff surface position has some effect on the computed results of sonic pressure.

KW - Aeroacoustic noise

KW - Euler equation

KW - Helicopter rotor

KW - Kirchhoff formula

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ER -

High efficiency method for calculating the aeroacoustic noise of transonic rotors

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