Transfer element method with application to acoustic design of aeroengine nacelle
Transfer element method with application to acoustic design of aeroengine nacelle
复制标题
传递元法在航空发动机短舱声学设计中的应用
DOI：
10.1016/j.cja.2015.02.005
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发表时间：
2015-04
影响因子：
5.7
通讯作者：
SUN Xiaofeng
中科院分区：
文献类型：
--
作者：
WANG Xiaoyu;SUN Xiaofeng
本文首先对发动机短舱声学设计的各种方法作了沿着介绍，并对它们在实际应用中的优缺点作了评述，然后着重对一种新的方法--传递单元法（TEM）进行了详细的分析和讨论，并着重讨论了它在以下三个问题中的应用：管道噪声的产生、管道内的声传播、管道进出口的声辐射以及它们之间的相互作用。在瞬变电磁法的理论框架内，将含有定子声源或内衬的无限长管道内声场的求解推广到界面上具有所有已知和未知量的有限区域内，并通过建立匹配方程求解相应的声场。此外，通过建立管道进出口表面压力及其导数的连续条件，将TEM与边界元法相结合，还可以研究管道进出口的声辐射。最后，讨论了声源和声学处理之间的各种相互作用的影响。数值算例表明，在发动机短舱声学设计中，考虑这种相互作用对声衰减的影响是十分重要的。
In the present survey, various methods for the acoustic design of aeroengine nacelle are first briefly introduced along with the comments on their advantages and disadvantages for practical application, and then detailed analysis and discussion focus on a kind of new method which is called “transfer element method” (TEM) with emphasis on its application in the following three problems: turbomachinery noise generations, sound transmission in ducts and radiation from the inlet and outlet of ducts, as well as the interaction between them. In the theoretical frame of the TEM, the solution of acoustic field in an infinite duct with stator sound source or liner is extended to that in a finite domain with all knows and unknowns on the interface plane, and the relevant acoustic field is solved by setting up matching equation. In addition, based on combining the TEM with the boundary element method (BEM) by establishing the pressure and its derivative continuum conditions on the inlet and outlet surface, the sound radiation from the inlet and outlet of ducts can also be investigated. Finally, the effects of various interactions between the sound source and acoustic treatment have been discussed in this survey. The numerical examples indicate that it is quite important to consider the effect of such interactions on sound attenuation during the acoustic design of aeroengine nacelle.
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DOI：
10.2514/6.2011-3532
发表时间：
2011-06
期刊：
--
影响因子：
--
作者：
E. Envia
通讯作者：
E. Envia
影响因子：
4.7
作者：
Xiaoyu Wang;Xiaofeng Sun
通讯作者：
Xiaoyu Wang;Xiaofeng Sun
影响因子：
5.7
作者：
Xiaohua Liu;Dakun Sun;Xiaofeng Sun;Xiaoyu Wang
通讯作者：
Xiaohua Liu;Dakun Sun;Xiaofeng Sun;Xiaoyu Wang
预测跨音速轴流风扇/压缩机失速开始的模型
影响因子：
5.7
作者：
Sun, Xiaofeng;Yu, Weiwei;Nie, Chaoqun;Sun, Dakun
通讯作者：
Sun, Dakun
影响因子：
2.5
作者：
X. Jing;Xiaoyu Wang;Xiaofeng Sun
通讯作者：
X. Jing;Xiaoyu Wang;Xiaofeng Sun