Modeling of Focused Acoustic Field of a Concave Multi-annular Phased Array Using Spheroidal Beam Equation

被引：2
|
作者：
Yu Li-Li [1 ,2 ]
Shou Wen-De [1 ,3 ]
Hui Chun [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Biomed Engn, Shanghai 200030, Peoples R China
[2] Shanghai Maritime Univ, Inst Navigat Sci, Shanghai 201306, Peoples R China
[3] Shanghai Inst Ultrasound Med, Shanghai 200233, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2012年 / 57卷 / 02期
基金：
中国国家自然科学基金;
关键词：
axial dynamic focusing; SBE; acoustic field; multi-annular phased array; TRANSDUCER; ULTRASOUND;
D O I：
10.1088/0253-6102/57/2/20
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A theoretical model of focused acoustic field for a multi-annular phased array on concave spherical surface is proposed. In this model, the source boundary conditions of the spheroidal beam equation (SBE) for multi-annular phased elements are studied. Acoustic field calculated by the dynamic focusing model of SBE is compared with numerical results of the O'Neil and Khokhlov-Zabolotskaya-Kuznetsov (KZK) model, respectively. Axial dynamic focusing and the harmonic effects are presented. The results demonstrate that the dynamic focusing model of SBE is good valid for a concave multi-annular phased array with a large aperture angle in the linear or nonlinear field.
引用
收藏
页码：285 / 289
页数：5
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