摘要
针对外域声场计算问题,基于有限元-无限元耦合方法,探讨无限元单元类型、单元大小等要素对声辐射与声散射问题的计算结果的影响。结果表明:有限元-无限元耦合方法对于声辐射和声散射问题的求解准确可行。由算例可知,当无限单元为二次单元时,其单元大小等于1/3波长时即可获得较为精确的声场计算结果。
Aiming at the calculation problem of exterior acoustic field, the influence of element type and size of infinite element on the calculation results of acoustic radiation and scattering is discussed based on the coupling method of finite element-infinite element. The results show that the coupling method of finite element and infinite element is accurate and feasible for solving acoustic radiation and acoustic scattering problems. The calculation example shows that when the infinite element is a quadratic element and its element size is equal to 1/3 wavelength, a more accurate exterior acoustic field calculation result can be obtained.
作者
缪硕
石敏
任春雨
MIAO Shuo;SHI Min;REN Chunyu(School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;No.91977 Troops of PLA,Beijing 102249,China)
出处
《计算机辅助工程》
2022年第2期57-62,共6页
Computer Aided Engineering
关键词
外域声场
声辐射
声散射
无限元
exterior acoustic field
acoustic radiation
acoustic scattering
infinite element
