前缘高频振动对亚声速开式空腔内强噪声影响的数值研究

doi:10.7527/S1000-6893.2015.0223

流体力学与飞行力学

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前缘高频振动对亚声速开式空腔内强噪声影响的数值研究

宁方立, 史红兵, 丘廉芳, 卫金刚

西北工业大学机电学院, 西安 710072

收稿日期:2015-05-14 修回日期:2015-08-06 出版日期:2015-12-15 发布日期:2015-08-18
通讯作者: 宁方立,Tel.:029-82493927,E-mail:ningfl@nwpu.edu.cn E-mail:ningfl@nwpu.edu.cn
作者简介:宁方立,男,博士,教授,博士生导师。主要研究方向:气动声学、强声密封。Tel:029-82493927,E-mail:ningfl@nwpu.edu.cn;史红兵,男,硕士研究生。主要研究方向:气动声学,E-mail:shihongbingnwpu@163.com;丘廉芳,男,硕士研究生。主要研究方向:气动声学,E-mail:qiulf132057@mail.nwpu.edu.cn;卫金刚,男,硕士研究生。主要研究方向:气动声学,E-mail:weijg623417@163.com
基金资助:
国家自然科学基金(51075329,51375385);航空科学基金(20131553019);陕西省自然科学基础研究计划项目(2014JM2-6116);西北工业大学研究生创意创新种子基金(Z2015069)

Numerical research of high frequency vibration effect on subsonic open cavity macro-noise

NING Fangli, SHI Hongbing, QIU Lianfang, WEI Jin'gang

School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China

Received:2015-05-14 Revised:2015-08-06 Online:2015-12-15 Published:2015-08-18
Supported by:
National Natural Science Foundation of China (51075329,51375385); Aeronautical Science Foundation of China (20131553019); Natural Science Basic Research Plan in Shaanxi Province (2014JM2-6116); The Seed Foundation of Innovation and Creation for Graduate Students in Northwestern Polytechnical University (Z2015069)

摘要/Abstract

摘要：

空腔流动现象广泛存在于各类航空飞行器中,对其包含的多种复杂物理现象的研究具有十分重要的工程及实际意义。采用大涡模拟方法对开式空腔噪声进行数值仿真,并研究了腔体前缘壁面施加高频振动后对腔体内部纯音噪声及模态的影响。研究发现随着壁面振动频率的提高,腔体内部的纯音噪声峰值逐渐降低,当腔体前缘壁面振动频率达到4000 Hz时,腔体内部1阶与2阶模态的纯音噪声峰值分别降低15 dB和17 dB。因此在腔体前缘壁面施加高频振动能显著地降低腔体内部的纯音噪声,为扩展开式空腔的工程应用奠定了良好的理论基础。

关键词: 开式空腔, 大涡模拟, 纯音噪声, 噪声频谱, 高频振动

Abstract:

Cavity flow phenomena widely exist in all kinds of aerospace vehicles. Research on the complicated physical phenomena in cavities is of great importance to engineering applications. Large eddy simulation method is used to simulate the open cavity noise. We apply high frequency wall vibration at the leading edge of the cavity and investigate its influence on the mode and the noise inside the cavity. The study shows that the peak of the pure tone noise inside the cavity decreases as the frequency of the wall vibration increases. When the vibration frequency at the leading edge reaches 4000 Hz, the peak of the pure tone noise of the main and second mode in the interior of the cavity can be reduced by 15 dB and 17 dB respectively. Therefore, the peak of the pure tone noise inside the cavity can be reduced significantly with the high frequency wall vibration applied at the leading edge of the cavity. This work will pave the way to extend the applications of subsonic open cavities.

Key words: open cavity, large eddy simulation, pure tone noise, acoustic spectrum, high frequency vibration

中图分类号:

TU112.3

宁方立, 史红兵, 丘廉芳, 卫金刚. 前缘高频振动对亚声速开式空腔内强噪声影响的数值研究[J]. 航空学报, 2015, 36(12): 3843-3852.

NING Fangli, SHI Hongbing, QIU Lianfang, WEI Jin'gang. Numerical research of high frequency vibration effect on subsonic open cavity macro-noise[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(12): 3843-3852.

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E-mail：hkxb@buaa.edu.cn

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前缘高频振动对亚声速开式空腔内强噪声影响的数值研究

Numerical research of high frequency vibration effect on subsonic open cavity macro-noise

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