| 声电耦合场的时域有限差分方法 |
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| 引用本文： | 徐广成,任伟. 声电耦合场的时域有限差分方法[J]. 杭州电子科技大学学报, 2005, 25(3): 5-8 |
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| 作者姓名： | 徐广成 任伟 |
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| 作者单位： | 杭州电子科技大学电子信息学院,浙江,杭州,310018 |
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| 基金项目： | 国家自然科学基金项目(60471011)，教育部科学技术研究重点项目(204058)，浙江省自然科学基金(M603067)，浙江省教育厅2004年度科研计划项目(20040492) |
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| 摘 要： | 将时域有限差分(FDTD)方法拓展到声电耦合场的仿真领域。在电磁场、声场FDTD方法的基础上，采用一种新的适合分析声电耦合场的差分离散方式，从而使FDTD方法完全适用于声电耦合场。这是FDTD方法用于声电耦合场模拟的初步尝试，仅通过一维压电媒质的例子来说明方法的可行性，仿真了正弦声源激励下，声场、电磁场的传播和耦合，二维和三维的对应仿真将陆续报道。
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| 关 键 词： | 声电耦合 时域有限差分 差分离散方式 微波声学 压电媒质 |
| 文章编号： | 1001-9146(2005)03-0005-04 |
| 修稿时间： | 2004-04-27 |
Finite-Difference Time-Domain (FDTD) Method for Coupled Acoustic and Electromagnetic Fields |
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| XU Guang-cheng,REN Wei. Finite-Difference Time-Domain (FDTD) Method for Coupled Acoustic and Electromagnetic Fields[J]. Journal of Hangzhou Dianzi University, 2005, 25(3): 5-8 |
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| Authors: | XU Guang-cheng REN Wei |
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| Abstract: | A finite-difference time-domain (FDTD) method is proposed for the simulation of coupled acoustic and electromagnetic (EM) fields. The method is based on the FDTD method for EM fields and the FDTD method for acoustic fields. In this FDTD scheme, a new staggered grid both in time and space for coupled acoustic and EM fields is presented. Via this staggered grid, the FDTD method can be applied to coupled acoustic and EM fields without any difficalty. To the best of our knowledge, this paper represents the initial attempt to apply the FDTD method for the simulation of coupled acoustic and EM fields. Feasibility of the new approach in this paper is demonstrated by a numerical example of a one-dimensional problem in poroelastic media. The counterpart of numerical results for two/three dimensional cases will be reported elsewhere. |
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| Keywords: | coupled acoustic and electromagnetic fields finite-difference time-domain staggered grid microwave acoustics poroelastic media |
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