| 圆柱坐标系下用于FDTD的总场-散射场连接边界条件研究 |
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| 引用本文： | 张洪欣.圆柱坐标系下用于FDTD的总场-散射场连接边界条件研究[J].滨州学院学报,2003,19(2):25-30. |
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| 作者姓名： | 张洪欣 |
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| 作者单位： | 北京邮电大学,北京,100876 |
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| 基金项目： | 国家自然科学基金资助项目(69931030) |
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| 摘 要： | 在三维柱坐标系下给出了麦克斯韦方程在完全匹配层(PML)吸收边界条件中的时域有限差分(PDTD)表达式,从而把FDTD推广到三维复柱坐标系中并加以实现.为了模拟柱面波在空间的传播,给出了在柱坐标系下完整的总场和散射场的连接边界条件.最后,模拟了柱面波在自由空间中的传播及空心圆柱体在柱面波入射下的近场和远场散射特性.
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| 关 键 词： | 时域有限差分 完全匹配层 总场 散射场 连接边界条件 |
| 文章编号： | 1008-2980(2003)02-0025-06 |
| 修稿时间： | 2003年2月8日 |
The Study on the Boundary Connecting Conditions of Total Field and Scattering Field Used in FDTD Method in Three-Dimension Cylindrical Coordinates |
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| ZHANG Hong-xin.The Study on the Boundary Connecting Conditions of Total Field and Scattering Field Used in FDTD Method in Three-Dimension Cylindrical Coordinates[J].Journal of Binzhou University,2003,19(2):25-30. |
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| Authors: | ZHANG Hong-xin |
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| Abstract: | In this paper, the finite-difference time-domain formation of Maxwell's equation is deduced and coded in perfectly matched layer(PML) in 3-D cylindrical complex coordinates. In order to simulate the propagation of cylindrical wave in space, the perfect Boundary connecting condition of total field and scattering field is proposed.In the end,the propagation of cylindrical wave in free space,and the hollow cylinder scattering characteristics in near field and far field is completed when it is initiated by cylindrical wave. |
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| Keywords: | finite-difference time-domain(FDTD) perfectly matched layer(PML) total field scattering field boundary connecting condition |
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