科研之友
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摘要
In a finite-difference time-domain (FDTD) calculation, relatively fine spatial gridding is required to resolve regions containing fine structural features. To reduce computation time, subgridding algorithms can be used to efficiently handle configurations that feature multiscale dimensions: Such algorithms can maintain the desired accuracy while avoiding the computation of the entire FDTD space at a finer mesh resolution. A novel FDTD subgridding algorithm with adaptively adjusted time-steps is proposed in this article. The separated temporal and spatial interfaces for the proposed FDTD subgridding algorithm with a typical 1: 3 mesh ratio are described in detail. Higher mesh ratios were achieved using the adaptively adjusted time-stepping procedure. Accuracy of the proposed method was verified by comparing the results with those of the conventional FDTD method involving a fine mesh resolution.
- 出版日期2015-3
- 单位中山大学
