A High-order Accurate Scheme for the Dispersive Maxwell's Equations and Material Interfaces on Overset Grids

被引：0
|
作者：
Banks, Jeffrey W. [1 ]
Buckner, Benjamin B. [1 ]
Henshaw, William D. [1 ]
Kildishev, Alexander, V [2 ]
Kovacic, Gregor [1 ]
Prokopeva, Ludmila J. [2 ]
Schwendeman, Donald W. [1 ]
机构：
[1] Rensselaer Polytech Inst, Dept Math Sci, New York, NY 12180 USA
[2] Purdue Univ, Elect & Comp Engn, W Lafayette, IN 47907 USA
来源：
2020 INTERNATIONAL APPLIED COMPUTATIONAL ELECTROMAGNETICS SOCIETY SYMPOSIUM (2020 ACES-MONTEREY) | 2020年
关键词：
FDTD; dispersive Maxwell's equations; material interfaces; overset grids;
D O I：
10.23919/aces49320.2020.9196202
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An efficient and high-order accurate scheme for solving the time-domain dispersive Maxwell's equations and material interfaces is described. Maxwell's equations are solved in second-order form for the electric field. A generalized dispersive material (GDM) model is used to represent a general class of linear dispersive materials and this model is implemented in the time-domain with the auxiliary differential equation (ADE) approach. Fourth-order accuracy is achieved with a single-step three-level scheme. High-order accuracy at interfaces is obtained using locally conforming grids and compatibility conditions. Composite overlapping grids are used to treat complex geometry with Cartesian grids generally covering most of the domain and local conforming grids representing curved boundaries and interfaces.
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页数：2
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