基于PE算法的管道噪声声传播预测技术
Prediction of Propagation of Pipeline Noise Based on Parabolic Equation Algorithm

DOI: 10.12677/OJAV.2021.94015, PP. 143-152

Keywords: PE方法，数值预测，声传播，软件
PE Method, Numerical Prediction, Sound Propagation, Software

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Abstract:

本文针对风扇外涵道声传播数值预测问题，基于PE方法，开发了声阻抗边界条件模型。针对二维与三维的声传播问题、多种声学边界模型，应用有限差分法进行离散，采用四阶龙格库塔法进行推进，开发了管道噪声声传播预测软件。标模算例验证结果表明，此软件与传统声学有限元软件相比，可以有效缩短风扇外涵道声传播数值预测时间，其既能保证足够的预测精度，又提高了计算效率。
In this paper, based on the PE method, the acoustic impedance boundary condition model is developed for the numerical prediction of the noise propagation in the duct outside the fan. Aiming at the two-dimensional and three-dimensional sound propagation problems and various acoustic boundary models, the finite difference method is used for discretization, and the fourth-order Runge-Kutta method is used for advancement, and the pipeline noise sound propagation prediction software is developed. The verification results of the standard model calculation example show that compared with the traditional acoustic finite element software, this software can effectively shorten the numerical prediction time of the ducted sound propagation outside the fan. It can not only ensure sufficient prediction accuracy, but also improve the calculation efficiency.

References

[1]	Dougherty, R.P. (1999) A Parabolic Approximation for Flow Effects on Sound Propagation in Nonuniform. Softwall, Ducts, AIAA Paper 99-1822. https://doi.org/10.2514/6.1999-1822
[2]	Lan, J.H. (2001) Turbofan Duct Propaga-tion Model. NASA CR 2001-211245.
[3]	Watson, W.R. (2002) Three-Dimensional Rectangular Duct Code with Ap-plication to Impedance Eduction. AIAA Journal, 40, 217-226. https://doi.org/10.2514/2.1663
[4]	Lan, J.H. and Breard, C. (2006) Development and Validation of a 3D Linearized Euler Solver. AIAA Paper 2006-2585. https://doi.org/10.2514/6.2006-2585
[5]	Lan, J.H. and Breard, C. (2005) Validation of 3D Acoustic Propagation Code with Analytical and Experimental Results. AIAA Paper 2005-2901. https://doi.org/10.2514/6.2005-2901
[6]	Nark, D.M., Farassat, F., Pope, D.S. and Vatsa, V. (2003) The Devel-opment of the Ducted Fan Noise Propagation and Radiation Code CDUCTLaRC. AIAA Paper 2003-3242. https://doi.org/10.2514/6.2003-3242
[7]	Nark, D.M. and Farassat, F. (2006) Further Investigation of Acoustic Propagation Codes for Three Dimensional Geometries. AIAA Paper 2006-2586. https://doi.org/10.2514/6.2006-2586
[8]	Gerhold, C., Cabell, R. and Brown, M. (2006) Development of an Ex-perimental Rig for Investigation of Higher Order Modes in Ducts. AIAA Paper 2006-2637. https://doi.org/10.2514/6.2006-2637
[9]	Corones, J. (1975) Bremmer Series That Correct Parabolic Approxima-tions. Journal of Mathematical Analysis and Applications, 50, 361-372. https://doi.org/10.1016/0022-247X(75)90029-3
[10]	Nark, D.M., Watson, W.R. and Jones, M.G. (2005) An In-vestigation of Two Acoustic Propagation Codes for Three- Dimensional Geometries. AIAA Paper 2005-3022. https://doi.org/10.2514/6.2005-3022
[11]	吴鑫波, 朱卫军, 曾明伍. 抛物方程(PE)方法在风电场噪声传播中的应用研究[J]. 华北电力大学学报, 2020, 47(4): 80-85.
[12]	朱凤芹, 张海刚, 屈科. 南海东北部中尺度暖涡对声传播的影响[J]. 哈尔滨工程大学学报, 2021.
[13]	Watson, W.R., Jones, M.G. and Parrott, T.L. (1998) Validation of an Impedance Education Method in Flow. AIAA 98-2279. https://doi.org/10.2514/6.1998-2279

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