Implementation and Application of Coordinate Stretched PML under Two-dimensional Cylindrical Coordinate

Journal of System Simulation ›› 2015, Vol. 27 ›› Issue (7): 1644-1651.

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Implementation and Application of Coordinate Stretched PML under Two-dimensional Cylindrical Coordinate

Zhu Anshi¹, Chen Zili¹, Yang Yong², Zhen Yunhui³

1. Mechanical Engineering College, Shijiazhuang 050003, China;
2. Small Arms Institute, Beijing 102202, China;
3. Hebei Provincial Military Command, Shijiazhuang 050011, China

Received:2014-04-29 Revised:2014-07-26 Online:2015-07-08 Published:2020-07-31

Abstract

Abstract: According to the numerical calculation of electromagnetic field under cylindrical coordinate, the conventional split field absorbing boundary is no longer applicable. The coordinate stretched perfectly matched layers (CS-PML) were applied in the two-dimensional stretched cylindrical coordinate system. The updating equations of Maxwell curl equations in CS-PML were derived by using auxiliary equation method. The simulation results show that theoretical derivation is correct. The reflection coefficient of CS-PML is less than -30 dB, and it is able to meet the precision demand of numerical calculation. Besides, the CS-PML was adopted to investigate the radiation characteristic of the monopole antenna fed by coaxial cable. And the near-field and far-field pattern were obtained. The investigation provides a new idea and reference for the numerical calculation of electromagnetic scattering and radiation problems.

Key words: finite-difference time-domain (FDTD), perfectly matched layer (PML), numerical calculation, radiation pattern

CLC Number:

TN92

Zhu Anshi, Chen Zili, Yang Yong, Zhen Yunhui. Implementation and Application of Coordinate Stretched PML under Two-dimensional Cylindrical Coordinate[J]. Journal of System Simulation, 2015, 27(7): 1644-1651.

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Implementation and Application of Coordinate Stretched PML under Two-dimensional Cylindrical Coordinate

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