航空学报 > 2014, Vol. 35 Issue (9): 2481-2490   doi: 10.7527/S1000-6893.2014.0014

基于流场/声场混合模型的叶轮机械单音噪声研究

王良锋, 乔渭阳, 纪良, 仝帆   

  1. 西北工业大学 动力与能源学院, 陕西 西安 710072
  • 收稿日期:2013-09-30 修回日期:2014-03-06 出版日期:2014-09-25 发布日期:2014-04-08
  • 通讯作者: 乔渭阳,Tel.:029-88482195 E-mail:qiaowy@nwpu.edu.cn E-mail:qiaowy@nwpu.edu.cn
  • 作者简介:王良锋 男,博士研究生。主要研究方向:轴流机械气动声学。Tel:029-88482195 E-mail:wlfzxlgnl@126.com;乔渭阳 男,博士,教授,博士生导师。主要研究方向:叶轮机气体动力学,发动机气动声学。Tel:029-88482195 E-mail:qiaowy@nwpu.edu.cn
  • 基金资助:

    国家自然科学基金(51276149)

Turbomachinery Tonal Noise Study Based on Flow-field/acoustic-field Hybrid Model

WANG Liangfeng, QIAO Weiyang, JI Liang, TONG Fan   

  1. School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2013-09-30 Revised:2014-03-06 Online:2014-09-25 Published:2014-04-08
  • Supported by:

    National Natural Science Foundation of China (51276149)

摘要:

基于叶轮机械三维非定常黏性数值模拟(URANS)与管道内叶片排气动噪声声类比理论(DBAA),成功地发展了叶轮机械单音噪声混合预测模型(URANS/DBAA),该模型能够实现叶轮机械叶片详细设计参数与噪声辐射强度的关联。由于采用了Lighthill声类比理论,使得该模型并不需要耗费大量计算资源。基于URANS/DBAA混合模型,对某单级轴流风扇的单音噪声及其噪声源分布特性进行了详细的计算分析,结果表明,该混合模型能够准确模拟叶轮机械单音噪声,实现了对叶轮机械单音噪声基本规律的分析和认识。

关键词: 单音噪声, 声类比, 混合模型, 叶轮机械, 轴流风扇

Abstract:

Turbomachinery tonal noise hybrid prediction model (URANS/DBAA) is developed successfully based on the three-dimensional unsteady Reynolds-averaged Navier-Stokes (URANS) equations and the ducted blade-rows acoustic analogy (DBAA) theory. In the URANS/DBAA hybrid model, the detailed design parameters of the turbomachinery blades can be related to the noise level, and the computational load is not required so much because the Lighthill's acoustic analogy theory is used. The tonal noise of a single stage axial fan is predicted based on the URANS/DBAA hybrid model and the characteristics of the noise sources distribution on the blade surface are analyzed in detail. The results indicate that the URANS/DBAA hybrid model can simulate the turbomachinery tonal noise correctly and it can be used to recognize and analyze the primary rules of the turbomachinery tonal noise.

Key words: tonal noise, acoustic analogy, hybrid model, turbomachinery, axial fan

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