کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11023890 | 1701236 | 2019 | 43 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Finite element time-domain body-of-revolution Maxwell solver based on discrete exterior calculus
ترجمه فارسی عنوان
بر اساس محاسبات بیرونی دیجیتال، ماکزول حل مکعب فیزیکی محدود زمان
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کلمات کلیدی
بدن از انقلاب، دامنه محدود عنصر، معادلات ماکسول، محاسبات بیرونی گسسته، اپتیک تبدیل
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
We present a finite-element time-domain (FETD) Maxwell solver for the analysis of body-of-revolution (BOR) geometries based on discrete exterior calculus (DEC) of differential forms and transformation optics (TO) concepts. We explore TO principles to map the original 3-D BOR problem to a 2-D one in the meridian Ïz-plane based on a Cartesian coordinate system where the cylindrical metric is fully embedded into the constitutive properties of an effective inhomogeneous and anisotropic medium that fills the domain. The proposed solver uses a (TEÏ,TMÏ) field decomposition and an appropriate set of DEC-based basis functions on an irregular grid discretizing the meridian plane. A symplectic time discretization based on a leap-frog scheme is applied to obtain the full-discrete marching-on-time algorithm. We validate the algorithm by comparing the numerical results against analytical solutions for resonant fields in cylindrical cavities and against pseudo-analytical solutions for fields radiated by cylindrically symmetric antennas in layered media. We also illustrate the application of the algorithm for a particle-in-cell (PIC) simulation of beam-wave interactions inside a high-power backward-wave oscillator.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 376, 1 January 2019, Pages 249-275
Journal: Journal of Computational Physics - Volume 376, 1 January 2019, Pages 249-275
نویسندگان
Dong-Yeop Na, Ben-Hur V. Borges, Fernando L. Teixeira,