A Hybrid FETD Algorithm for Electromagnetic Modeling of Fine Structures

Fan, Kaihang; Wei, Bing; He, Xinbo; Li, Yiwen; Wei, Xiaolong

doi:10.1109/lawp.2019.2951516

Cited by 7 publications

(1 citation statement)

References 14 publications

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“…W ITH the rapid development of information science and technology, more and more complex electromagnetic problems have emerged. Under this circumstance, a class of multi-scale electromagnetic problems with fine structures [1], [2] appears, such as electromagnetic coupling problems with small holes or slits, including the shielding of high-frequency circuits [3], [4], the protection of strong electromagnetic pulses generated by lightning [5] or nuclear explosions [6], microwave leakage [7], and so on. For such problems, if the whole domain is divided by coarse grid, the electromagnetic characteristics of the fine structure cannot be accurately reflected due to low computational precision.…”

Section: Introductionmentioning

confidence: 99%

An Upwind Condition-Based Hybrid FDTD-PITD Method for Multi-scale Electromagnetic Problems with Fine Structures

Li¹,

Ma²,

Chi³

2022

Preprint

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<p>Multiscale problems with fine structure, involving electrically small fine details and relatively uniform areas, are posing significant challenges to any single algorithm in computational electromagnetics. Thus, a hybrid method combing the finite-difference time-domain (FDTD) method with the preciseintegration time-domain (PITD) method is proposed to handle such problems in this letter. For the hybrid method, the field values in the FDTD and PITD domains are calculated separately and independently. The information exchange between two solution domains is achieved by correcting the interface field components via the upwind condition. Several numerical experiments demonstrate the advantage of the hybrid method.<br> </p>

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