INFINITE ELEMENT METHOD FOR THE EXTERIOR PROBLEMS OF THE HELMHOLTZ EQUATIONS

• 来源期刊: 计算数学（英文版）
• 关键词: Helmholtz equation Exterior problem Infinite element method.
• 年，卷（期）: 2000,（6）
• 页码范围: 657-672
• 页数: 16页
• 语种: 英文

摘要

There are two cases of the exterior problems of the Helmholtz equation. If λ > 0 the bilinear form is coercive, and if λ ＜ 0 it is the scattering problem.We give a new approach of the infinite element method, which enables us to solve these exterior problems as well as corner problems. A numerical example of the scattering problem is given.