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arXiv physics/0210035physics.comp-phphysics.optics
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求解含时麦克斯韦方程组的数值方法

Numerical methods for solving the time-dependent Maxwell equations

H. De Raedt, J. S. Kole, K. F. L. Michielsen, M. T. Figge

摘要:

本文综述了近年来在求解介电常数和磁导率随时间变化的麦克斯韦方程组的数值算法方面的一些进展。我们表明,铃木产品公式的方法可以用来构建一个家庭的无条件稳定的算法,传统的Yee算法,和两个新的变种的Yee算法,不需要使用交错的时间网格。我们还考虑了一个一步算法,基于Chebyshev多项式展开,并比较一步,Yee型,交替方向隐式和无条件稳定算法的计算效率。对于应用程序的长时间的行为是主要的兴趣,我们发现,一步算法可能是数量级更有效的比目前的多个时间步长,时域有限差分算法。

英文摘要:

We review some recent developments in numerical algorithms to solve the time-dependent Maxwell equations for systems with spatially varying permittivity and permeability. We show that the Suzuki product-formula approach can be used to construct a family of unconditionally stable algorithms, the conventional Yee algorithm, and two new variants of the Yee algorithm that do not require the use of the staggered-in-time grid. We also consider a one-step algorithm, based on the Chebyshev polynomial expansion, and compare the computational efficiency of the one-step, the Yee-type, the alternating-direction-implicit, and the unconditionally stable algorithms. For applications where the long-time behavior is of main interest, we find that the one-step algorithm may be orders of magnitude more efficient than present multiple time-step, finite-difference time-domain algorithms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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