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| 变截面风扇管道快速声散射计算 | |
| 引用本文： | 王同庆,张莉爽,杨兵,杨明绥.变截面风扇管道快速声散射计算[J].航空动力学报,2011,26(7):1569-1574. |
| 作者姓名： | 王同庆 张莉爽 杨兵 杨明绥 |
| 作者单位： | 1. 北京航空航天大学能源与动力工程学院,北京,100191 2. 中国科学院工程热物理研究所,北京,100190 3. 中国航空工业集团公司沈阳发动机设计研究所,沈阳,110015 |
| 摘 要： | 针对航空发动机消声短舱声学设计的需要,发展了一种结合快速声散射和直接边界元计算发动机远场声散射的方法,用于计算包含了壁面声阻抗影响的复杂截面管道声散射问题.应用该方法针对某风扇实验台进行了管道消声的数值模拟,得到了远场声散射结果,进行了声衬声阻抗影响的计算,并通过与文献结果的对比表明该方法具有工程应用价值. |
| 关 键 词： | 发动机短舱 变截面管 直接边界元方法 声衬 快速声散射 |
| 收稿时间： | 2011/4/15 0:00:00 |
| 修稿时间： | 2011/5/27 0:00:00 |
Aeroacoustic scattering via the fast scattering method |
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| WANG Tong-qing,ZHANG Li-shuang,YANG Bing and YANG Ming-sui.Aeroacoustic scattering via the fast scattering method[J].Journal of Aerospace Power,2011,26(7):1569-1574. | |
| Authors: | WANG Tong-qing ZHANG Li-shuang YANG Bing and YANG Ming-sui |
| Institution: | School of Jet Propulsion, Beijing University of Aeronautics and Astronautics,Beijing 100191,China;;School of Jet Propulsion, Beijing University of Aeronautics and Astronautics,Beijing 100191,China;Institute of Engineering Thermophysics, Chinese Academy of Sciences,Beijing 100190,China;Shenyang Aeroengine Research Institute, Aviation Industry Corporation of China,Shenyang 110015,China |
| Abstract: | The fast scattering method was developed in this paper, which could be used for predicting the acoustic propagation problems in the varying cross-section ducts with the acoustic liners. The method can handle the complex section relatively easily by using the direct boundary element method. The noise reduction of a real fan with the duct liners was predicted. The influence of the liner impedance and the sound scattering from the moving body was investigated by comparing the results with those given in the literature. The results illustrate that the present method can be used for the design of the duct liner in the engineering. |
| Keywords: | aircraft engine nacelle varying cross-section duct direct boundary element method acoustic liner fast scattering |
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