Investigation on a Duct Noise Control Method through Membranes in Tandem

Author:

Shen Cheng123,Yang Shasha34ORCID,Fan Harris K. H.5,Leung Randolph C. K.5ORCID

Affiliation:

1. College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

2. Space Structure and Mechanism Technology Laboratory of China Aerospace Science and Technology Group Co., Ltd., Shang Hai, China

3. State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong University, Xi’an 710049, China

4. School of Mechanical Engineering, Nanjing Vocational University of Industry Technology, Nanjing 210023, China

5. Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China

Abstract

Duct noise control is an important practical problem. This paper explores the vibro-acoustic mechanism of duct noise through the membrane in tandem. Validity and feasibility of the proposed analytical model is demonstrated by comparing existing simplified models and full direct aeroacoustic simulation solved with the CE/SE model. It is shown that the coupling effect between two membranes in tandem is not negligible to predict system response. Moreover, introduction of multimembranes is important or even the only efficient way to apply this passive control method in practice.

Funder

National Natural Science Foundation of China

Publisher

Hindawi Limited

Subject

Mechanical Engineering,Mechanics of Materials,Geotechnical Engineering and Engineering Geology,Condensed Matter Physics,Civil and Structural Engineering

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