EXACT NONREFLECTING BOUNDARY CONDITIONS FOR AN ACOUSTIC PROBLEM IN THREE DIMENSIONS

• 来源期刊: 计算数学（英文版）
• 学科: 数学
• 关键词: Exterior problem Nonreflecting artificial boundary condition Acoustic equation Three-dimensions.
• 年，卷（期）: 2003,（1）
• 页码范围: 15-24
• 页数: 10页
• 分类号: O1
• 语种: 英文

摘要

In this paper, nonrefiecting artificial boundary conditions are considered for an acousticproblem in three dimensions. With the technique of Fourier decomposition under theorthogonal basis of spherical harmonics, three kinds of equivalent exact artificial boundaryconditions are obtained on a spherical artificial boundary. A numerical test is presentedto show the performance of the method.