Author(s)

Jun Li ¹, Qun Zhang ¹, Peng Jiang ¹, Aote Zhang ¹

Affiliation(s)

¹ Department of Electromagnetism, INTESIM, Dalian, Liaoning, 116000, China

Corresponding Author

Jun Li

ABSTRACT

For the analysis of irregular structures, an arbitrary high-order finite difference time-domain local time step based on non-uniform grids is proposed. Comparison with Finite Difference Time Domain, this new method based on non-uniform mesh weak the limit of the time-step size. For the new method allows different grids to interate with different time-step sizes. In order to perform fast and accurate electromagnetic analysis on the responsible problem, it is necessary to use multi-scale grids to segment the target. Using appropriate time steps to solve electromagnetic fields on different grids, achieving accurate and fast analysis of problems. Due to breaking through the limitation of grid size on time step size, the computational workload of the work is reduced. In addition, multi-time steps are implemented by local time step and an arbitrary high order is added to this work to promise the accuracy of computation. This work has great value in practical application engineering.

KEYWORDS

Non-uniform mesh, Finite Difference Time Domain, Local time step

CITE THIS PAPER

Jun Li, Qun Zhang, Peng Jiang, Aote Zhang, Acceleration of Radiation Analysis Using an Arbitrary High Order Difference Method with Non-uniform Mesh. Journal of Electronics and Information Science (2023) Vol. 8: 8-16. DOI: http://dx.doi.org/10.23977/10.23977/jeis.2023.080502.

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