A Memory-Efficient Hybrid Implicit–Explicit FDTD Method for Electromagnetic Simulation
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https://doi.org/10.13052/2022.ACES.J.370202关键词:
Finite Difference Time Domain (FDTD), hybrid Implicit-Explicit FDTD (HIE-FDTD), memory-Efficient摘要
As the explicit finite-difference time-domain (FDTD) method is restricted by the Courant−-Friedrich−-Levy (CFL) stability condition and inefficient for simulation in some situations, implicit methods are developed. The hybrid implicit−-explicit (HIE) FDTD method is one popular method among them. In this paper, a memory-efficient HIE FDTD method is designed for electromagnetic simulation. The proposed HIE-FDTD method is based upon the divergence relationship of electric fields, nearly reduces one field component, and realizes a memory reduction rate of 33% approximately. Two numerical experiments are carried out to validate the proposed method and the results indicate that the proposed memory-efficient HIE-FDTD method can work well.
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