Impedance eduction with a theoretical model for sound propagation in a grazing impedance tube

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	Impedance eduction with a theoretical model for sound propagation in a grazing impedance tube
	Jiang, Hanbo ; Huang, Xun
	2016
英文摘要	This paper presents a theoretical model to predict plane wave propagation inside a lined duct in the presence of a mean flow. The setup is simplified from the classical test case of a grazing impedance tube, which was heavily used as a benchmark in a lot of previous numerical studies. The experimental dataset available in the literature, however, only covers certain representative parameters in a limited number of discrete values. To further benefit numerical works and impedance eduction, a theoretical model is provided in this work by using the Wiener-Hopf technique, which would enable rapid acoustic predictions over various parametric values. Furthermore, a better understanding of the related acoustic and fluid mechanics could be revealed from this theoretical study. In this paper, the proposed model is first given by presenting the essential theoretical derivations. The performance of the model is then demonstrated by comparing to numerical and experimental results, respectively. These demonstrations clearly suggest the capability and the potential of the proposed model for parametric studies and optimizations. ? 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.; EI
会议录	22nd AIAA/CEAS Aeroacoustics Conference, 2016
语种	英语
内容类型	会议论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/449576]
专题	工学院
推荐引用方式 GB/T 7714	Jiang, Hanbo,Huang, Xun. Impedance eduction with a theoretical model for sound propagation in a grazing impedance tube[C]. 见:.