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A new multilevels Huygens sub-gridding finite difference time domain based on a tree structure and object oriented programming

机译:基于树结构和面向对象程序设计的新的多层惠更斯子网格有限差分时域

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摘要

In this article, an efficient sub-gridding finite-difference time-domain is developed for the simulation of multiscaled electromagnetic problems. The proposed technique is based on using the Huygens surfaces for interfacing electromagnetic fields between different grids. The use of the Object Oriented Programming for modeling FDTD simulations facilitates the imbrication of multiple sub-grids. That heightens the spatial ratio without affecting the accuracy and stability of the sub-gridding technique. Spatiotemporal interpolation is used to evaluate the electromagnetic fields in Huygens surface location among the coarse grid. Results of numerical experiments prove that the use of imbricated sub-grids and spatiotemporal interpolation in the Huygens sub-gridding is more efficient than the use of a single sub-grid with only spatial interpolation.
机译:在本文中,开发了一种有效的子网格有限差分时域,用于模拟多尺度电磁问题。所提出的技术是基于使用惠更斯表面来使不同网格之间的电磁场相接。使用面向对象编程对FDTD仿真进行建模有助于简化多个子网格的实现。这提高了空间比率,而不会影响子网格技术的准确性和稳定性。时空插值用于评估粗网格中惠更斯表面位置的电磁场。数值实验结果证明,在惠更斯子网格中使用镶嵌子网格和时空插值比仅使用空间插值的单个子网格更有效。

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