摘要
提出了一种基于一致性几何绕射理论的理想刚性光滑曲面表面绕射声场高频近似计算方法。分别以圆球和无限长圆柱为例,计算了其表面绕射声场,并将计算结果与解析解进行了比较。结果表明,该方法具有计算简单明确,物理概念清晰,计算结果精确的特点。
An approximate solution is obtained for the diffracted acoustic field on a rigid smooth convex surface based on the uniform geometrical theory of diffraction（UTD）.A diffraction model is constructed in which diffracted rays are used to calculate the sound pressure field at any point on the convex sur-face where the UTD is valid.Numerical results for the diffracted sound fields on spherical and infinite-cylindrical surfaces are presented,showing a good agreement with the analytical solutions.This solution can be employed to calculate the sound field on a convex surface in an efficient and accurate manner.
出处
《声学技术》
CSCD
北大核心
2007年第4期618-622,共5页
Technical Acoustics
关键词
一致性几何绕射
绕射声场
光滑曲面
uniform geometrical theory of diffraction
diffracted sound field
smooth convex surface
