Design method for an acoustic cloak in flows by topology optimization

作     者：Zhengyu Ma Oksana Stalnov Xun Huang 

作者机构：State Key Laboratory of Turbulence and Complex SystemsDepartment of Aeronautics and AstronauticsCollege of Engineering Peking UniversityBeijingChina Faculty of Aerospace EngineeringTechnion-Israel Institute of TechnologyHaifaIsrael 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2019年第35卷第5期

页      面：964-971页

核心收录：

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

基　　金：This work was supported by the Beijing Municipal Science&Technology Commission(Grant Z181100001018030) the National Natural Science Foundation of China(Grant 11561130148) the Newton Advanced Fellowship from the Royal Society(Ref.NA14081) 

主　　题：Aeroacoustics Acoustic cloaking Topology optimization 

摘      要：In this paper,a design method for an acoustic cloak in the presence of background mean flows is proposed by using topology optimization,which enables the associated fabrication of the cloaking *** density-based topology optimization method is used to allocate the designated materials,thus providing the structure of the *** optimization problem is efficiently solved with the gradient-based globally convergent method of moving asymptotes,which utilizes the derivative information from the finite element simulation studies of the linearized acoustic potential *** paper introduces the whole design method first then numerically demonstrates the corresponding performance,which shall constitute the main contribution of the present work.