New approach to the normal mode method in underwater acoustics

• 来源期刊: 中国物理（英文版）
• 学科: 物理学
• 关键词: normal mode problem dynamic system numerical simulation
• 年，卷（期）: 2002,（5）
• 页码范围: 456-460
• 页数: 5页
• 分类号: O4
• 语种: 英文

摘要

A new approach to the numerical solution of normal mode problems in underwater acoustics is presented, in whichthe corresponding normal mode problem is transformed to the problem of solving a dynamic system. Three applica-tions are considered: (1) the broad band normal mode problem; (2) the range-dependent problem with perturbationproportional to the range parameter; and (3) the evolution of the normal mode with environmental parameters. Anumerical simulation for a broad band problem is performed, and the calculated eigenvalues have good agreement withthose obtained by the standard normal mode code KRAKAN.