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首页> 外文期刊>Journal of Computational Physics >Method of moving frames to solve time-dependent Maxwell's equations on anisotropic curved surfaces: Applications to invisible cloak and ELF propagation
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Method of moving frames to solve time-dependent Maxwell's equations on anisotropic curved surfaces: Applications to invisible cloak and ELF propagation

机译:移动框架的方法以解决各向异性弯曲表面上的时间依赖麦克斯韦方程:看不见的斗篷和精灵传播的应用

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摘要

Applying the method of moving frames to Maxwell's equations yields two important advancements for scientific computing. The first is the use of upwind flux for anisotropic materials in Maxwell's equations, especially in the context of discontinuous Galerkin (DG) methods. Upwind flux has been available only to isotropic material, because of the difficulty of satisfying the Rankine-Hugoniot conditions in anisotropic media. The second is to solve numerically Maxwell's equations on curved surfaces without the metric tensor and composite meshes. For numerical validation, spectral convergences are displayed for both two-dimensional anisotropic media and isotropic spheres. In the first application, invisible two-dimensional metamaterial cloaks are simulated with a relatively coarse mesh by both the lossless Drude model and the piecewisely-parametered layered model. In the second application, extremely low frequency propagation on various surfaces such as spheres, irregular surfaces, and non-convex surfaces is demonstrated. (C) 2017 Elsevier Inc. All rights reserved.
机译:将移动框架的方法应用于Maxwell等式,为科学计算产生了两个重要进步。首先是Maxwell方程中的各向异性材料的使用upwind通量,特别是在不连续的Galerkin(DG)方法的背景下。 Unulwind助焊剂仅适用于各向同性材料,因为难以满足各向异性介质中的兰氏毒素的条件。第二是在没有公制张量和复合网格的情况下解决弯曲表面上的数值上麦克斯韦方程。对于数值验证,显示两维各向异性介质和各向同性球体的光谱收敛。在第一个应用中,通过无损博鲁德模型和分段参数分层模型,用相对粗略的网格模拟隐形二维超材料泄压。在第二应用中,对各种表面上的极低频率传播如球体,不规则表面和非凸面。 (c)2017年Elsevier Inc.保留所有权利。

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