学术
基于一致性几何绕射理论的曲面表面绕射声场解
李宏伟[1] 陈克安[1] 姜建伟[2]
[1]西北工业大学航海学院,陕西西安710072 [2]洛阳船舶材料研究所,河南洛阳471039
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。[著者文摘]
文章出处:
《声学技术》-2007年26卷4期 -618-622页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1000-3630（2007）-04-0618-05
Solution to diffracted sound field on a convex surface using uniform geometrical theory of diffraction
LI Hong-wei,CHEN Ke-an, JIANG Jian-wei（1, College of Marine Engineering, Northwestern Polytechnical University, Xi＇an 710072, China; 2 Luoyang Ship Material Research Institute, Luoyang 471039, China）
Abstract:
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.[著者文摘]
Key words:
uniform geometrical theory of diffraction;diffracted sound field;smooth convex surface
更多>>免费文章
cqvip.com