FDTD基本概念.pdf

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计算电磁学中的时域方法第1讲 FDTD介绍赵勋旺张玉电子工程学院

计算电磁学

本讲纲要 FDTD的发展简单回顾 FDTD的应用介绍 FDTD的算法发展趋势（Allen Taflove） FDTD的基本概念

1.1 FDTD的发展简单回顾 • 2nd-order accurate central space differences • 2nd-order accurate leapfrog time- stepping • Absorbing boundary condition at edge of the space lattice The Classic FDTD Algorithm

1.1 FDTD的发展简单回顾 FDTD Literature Database* www.fdtd.org As of Oct. 22, 2002, the total number of entries in this NSF/ONR - sponsored database was 4793. Breakdown: — Books: 9 — Ph.D. dissertations: 162 — Masters theses: 68 — Journal articles: 2549 — Conference proceedings: 1951 — Technical reports: 15 — Miscellaneous publications: 39 *Maintained by John Schneider, Washington State University

1.1 FDTD的发展简单回顾 Why FDTD is Popular • It is conceptually simple and systematic. • It is accurate and robust. • It uses no linear algebra. • It treats impulsive behavior naturally. • It treats nonlinear behavior naturally. • It readily allows multi-physics simulations. • Personal computer capabilities have caught up with the requirements of FDTD for a wide range of important engineering and physics modeling problems.

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