Flow aeroacoustic damping using coupled mechanical–electrical impedance in lined pipeline

doi:10.1088/1674-1056/24/5/054302

中国物理B ›› 2015, Vol. 24 ›› Issue (5): 54302-054302.doi: 10.1088/1674-1056/24/5/054302

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Flow aeroacoustic damping using coupled mechanical–electrical impedance in lined pipeline

陈勇^a, 黄奕勇^a, 陈小前^a, 白玉铸^b, 谭晓栋^b

a College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;
b Department of Electronic Technology, Officer's College of CAPF, Chengdu 610213, China

收稿日期:2014-08-12 修回日期:2014-11-24 出版日期:2015-05-05 发布日期:2015-05-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11404405, 91216201, 51205403, and 11302253).

Flow aeroacoustic damping using coupled mechanical–electrical impedance in lined pipeline

Chen Yong (陈勇)^a, Huang Yi-Yong (黄奕勇)^a, Chen Xiao-Qian (陈小前)^a, Bai Yu-Zhu (白玉铸)^b, Tan Xiao-Dong (谭晓栋)^b

a College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;
b Department of Electronic Technology, Officer's College of CAPF, Chengdu 610213, China

Received:2014-08-12 Revised:2014-11-24 Online:2015-05-05 Published:2015-05-05
Contact: Chen Yong E-mail:literature.chen@gmail.com
About author:43.28.Bj; 43.28.Py; 43.50.Nm
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11404405, 91216201, 51205403, and 11302253).

摘要/Abstract

摘要： We report a new noise-damping concept which utilizes a coupled mechanical–electrical acoustic impedance to attenuate an aeroacoustic wave propagating in a moving gas confined by a cylindrical pipeline. An electrical damper is incorporated to the mechanical impedance, either through the piezoelectric, electrostatic, or electro-magnetic principles. Our numerical study shows the advantage of the proposed methodology on wave attenuation. With the development of the micro-electro-mechanical system and material engineering, the proposed configuration may be promising for noise reduction.

关键词: aeroacoustics, mechanical–, electrical impedance, wave propagation, uniform flow

Abstract: We report a new noise-damping concept which utilizes a coupled mechanical–electrical acoustic impedance to attenuate an aeroacoustic wave propagating in a moving gas confined by a cylindrical pipeline. An electrical damper is incorporated to the mechanical impedance, either through the piezoelectric, electrostatic, or electro-magnetic principles. Our numerical study shows the advantage of the proposed methodology on wave attenuation. With the development of the micro-electro-mechanical system and material engineering, the proposed configuration may be promising for noise reduction.

Key words: aeroacoustics, mechanical–electrical impedance, wave propagation, uniform flow

中图分类号: (Mechanisms affecting sound propagation in air, sound speed in the air)

43.28.Bj

43.28.Py (Interaction of fluid motion and sound, Doppler effect, and sound in flow ducts) 43.50.Nm (Aerodynamic and jet noise)

陈勇, 黄奕勇, 陈小前, 白玉铸, 谭晓栋. Flow aeroacoustic damping using coupled mechanical–electrical impedance in lined pipeline[J]. 中国物理B, 2015, 24(5): 54302-054302.

Chen Yong (陈勇), Huang Yi-Yong (黄奕勇), Chen Xiao-Qian (陈小前), Bai Yu-Zhu (白玉铸), Tan Xiao-Dong (谭晓栋). Flow aeroacoustic damping using coupled mechanical–electrical impedance in lined pipeline[J]. Chin. Phys. B, 2015, 24(5): 54302-054302.

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Flow aeroacoustic damping using coupled mechanical–electrical impedance in lined pipeline

Flow aeroacoustic damping using coupled mechanical–electrical impedance in lined pipeline

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