中国物理B ›› 2015, Vol. 24 ›› Issue (2): 24101-024101.doi: 10.1088/1674-1056/24/2/024101
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
王玥a, 王建国a b, 陈再高a b
Wang Yue (王玥)a, Wang Jian-Guo (王建国)a b, Chen Zai-Gao (陈再高)a b
摘要: Based on conformal construction of physical model in a three-dimensional Cartesian grid, an integral-based conformal convolutional perfectly matched layer (CPML) is given for solving the truncation problem of the open port when the enlarged cell technique conformal finite-difference time-domain (ECT-CFDTD) method is used to simulate the wave propagation inside a perfect electric conductor (PEC) waveguide. The algorithm has the same numerical stability as the ECT-CFDTD method. For the long-time propagation problems of an evanescent wave in a waveguide, several numerical simulations are performed to analyze the reflection error by sweeping the constitutive parameters of the integral-based conformal CPML. Our numerical results show that the integral-based conformal CPML can be used to efficiently truncate the open port of the waveguide.
中图分类号: (Electrostatics; Poisson and Laplace equations, boundary-value problems)