Flow aeroacoustic damping using coupled mechanical electrical impedance in lined pipeline

作     者：陈勇 黄奕勇 陈小前 白玉铸 谭晓栋 

作者机构：College of Aerospace Science and Engineering National University of Defense Technology Department of Electronic Technology Officer’s College of CAPF 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2015年第24卷第5期

页      面：410-414页

核心收录：

学科分类：07[理学] 082403[工学-水声工程] 08[工学] 070206[理学-声学] 0824[工学-船舶与海洋工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11404405 91216201 51205403 and 11302253) 

主　　题：aeroacoustics mechanical-electrical impedance wave propagation uniform flow 

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.