کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4967871 1449387 2016 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Collocated electrodynamic FDTD schemes using overlapping Yee grids and higher-order Hodge duals
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Collocated electrodynamic FDTD schemes using overlapping Yee grids and higher-order Hodge duals
چکیده انگلیسی

The collocated Lebedev grid has previously been proposed as an alternative to the Yee grid for electromagnetic finite-difference time-domain (FDTD) simulations. While it performs better in anisotropic media, it performs poorly in isotropic media because it is equivalent to four overlapping, uncoupled Yee grids. We propose to couple the four Yee grids and fix the Lebedev method using discrete exterior calculus (DEC) with higher-order Hodge duals. We find that higher-order Hodge duals do improve the performance of the Lebedev grid, but they also improve the Yee grid by a similar amount. The effectiveness of coupling overlapping Yee grids with a higher-order Hodge dual is thus questionable. However, the theoretical foundations developed to derive these methods may be of interest in other problems.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 326, 1 December 2016, Pages 629-649
نویسندگان
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