Modified perfectly matched layer for truncation of open boundary of cylindrical waveguide in 2.5 dimensional simulation

li xiao-ze; wang jian-guo; wang yue

Volume 19 Issue 03

Mar. 2007

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Article Navigation > High Power Laser and Particle Beams > 2007 > 19(03): 0-

fan bin, wan yong-jian, yang li, et al. Experimental investigation on intelligent control of active lap based on CMAC neural network[J]. High Power Laser and Particle Beams, 2006, 18.

Citation:

li xiao-ze, wang jian-guo, wang yue. Modified perfectly matched layer for truncation of open boundary of cylindrical waveguide in 2.5 dimensional simulation[J]. High Power Laser and Particle Beams, 2007, 19.

fan bin, wan yong-jian, yang li, et al. Experimental investigation on intelligent control of active lap based on CMAC neural network[J]. High Power Laser and Particle Beams, 2006, 18.

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Modified perfectly matched layer for truncation of open boundary of cylindrical waveguide in 2.5 dimensional simulation

1.
Northwest Institute of Nuclear Technology,P.O.Box 69-15,Xi’an 710024,China

Publish Date: 2007-03-15

Abstract

Abstract

In the finite-difference time-domain(FDTD) method, the perfectly matched layer(PML) is a kind of high efficient absorbing boundary condition. By adding the terms of physical electric conductivity and magnetic conductivity in the conventional PML equations, a modified PML(MPML) method is presented. Three dimensional MPML equations in the cylindrical coordinate system are given and applied to truncate the open boundary of cylindrical waveguide in 2.5-dimensional simulation. Under the excitations of various modes with different frequencies, the relative errors obtained using the MPML method are 8~10 dB lower than those obtained by the conventional PML method.
- modified perfectly matched layer,
- cylindrical waveguide,
- open boundary,
- truncation,
- finite-difference time-domain

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