| 基于瑞利积分叠加法的聚焦换能器声场特性研究 |
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| 引用本文： | 程建政,周玉禄,毛彦欣,张德俊.基于瑞利积分叠加法的聚焦换能器声场特性研究[J].计算物理,2008,25(4):493-498. |
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| 作者姓名： | 程建政 周玉禄 毛彦欣 张德俊 |
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| 作者单位： | 1. 武汉科技学院, 湖北 武汉 430073;2. 中国科学院武汉物理与数学研究所, 湖北 武汉 430071;3. 江苏大学电气信息工程学院, 江苏 镇江 212013 |
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| 摘 要： | 基于经典的瑞利积分,提出考虑非线性传播、各次谐波衰减的声场瑞利积分线性叠加算法.分析其原理,并以凹球面聚焦换能器为例,采用该算法研究媒质衰减和非线性传播特性影响声焦域的规律.并与Khokhov-Zabolotskaya-Kuznesov(KZK)数值算法,以及实验结果进行比较,验证瑞利积分线性叠加算法描述高强度聚焦超声(HIFU)声场的有效性.
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| 关 键 词： | 瑞利积分线性叠加算法 声焦域 高强度聚焦超声 |
| 收稿时间： | 2006-12-30 |
| 修稿时间： | 2007-09-20 |
Sound Fields in a Concave Spherical Transducer with Linear Superposition of Rayleigh Integrals |
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| CHENG Jianzheng,ZHOU Yulu,MAO Yanxin,ZHANG Dejun.Sound Fields in a Concave Spherical Transducer with Linear Superposition of Rayleigh Integrals[J].Chinese Journal of Computational Physics,2008,25(4):493-498. |
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| Authors: | CHENG Jianzheng ZHOU Yulu MAO Yanxin ZHANG Dejun |
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| Institution: | 1. Wuhan University of Science and Engineering, Wuhan 430073, China;2. Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China;3. College of Electrical Engineering and Information, Jiangsu University, Zhenjiang 212013, China |
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| Abstract: | A method called Rayleigh integral linear superposition algorithm is introduced,in which nonlinear propagation and high order harmonic attenuation are considered.Principle of the method is analyzed.For a concave spherical transducer,medium attenuation and nonlinear propagation in sound focused region are studied. The method is compared with Khokhov-Zabolotskaya-Kuznesov(KZK) method.It is shown that the method is effective in calculating high-intensity focused ultrasound(HIFU) sound fields. |
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| Keywords: | Rayleigh integral method of linear superposition sound focused region high-intensity focused ultrasound |
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