J4

• •    下一篇

解一类具有周期系数的Helmholtz方程的Galerkin谱方法

冯立新1,2, 马富明1   

  1. 1. 吉林大学数学学院, 长春 130012; 2. 黑龙江大学数学系, 哈尔滨 150080
  • 收稿日期:2002-10-28 修回日期:1900-01-01 出版日期:2003-07-26 发布日期:2003-07-26
  • 通讯作者: 冯立新

Galerkinspectral Method for a Class ofHelmholtz Equations with Periodic Coeffi cients

FENG Li-xin1,2, MA Fu-ming1   

  1. 1. College of Mathematics, Jilin University, Changchun 130012, China; 2. Department of Mathematics, Heilongjiang University, Harbin 150080, China
  • Received:2002-10-28 Revised:1900-01-01 Online:2003-07-26 Published:2003-07-26
  • Contact: FENG Li-xin

摘要: 考虑一类具有周期系数的Helmholtz方程, 它是一类衍射光栅问题的数学模型, 用Gal erkin谱方法求解此问题, 得到了最优的误差估计和数值计算结果.

关键词: Helmholtz方程, 周期结构, Galerkin谱方法

Abstract: We considered a planar dielectric-layer modulated grating. It has been shown that the diffraction problem may be modeled by a Helmholtz equation with periodic coefficients. The diffraction problem may be solved by a Galerkin-spectral method. In this paper, the optimal error estimates and the numerical results for the Galerkin-spectral method are established.

Key words: Helmholtz equation, periodic structure, Galerkin-spectral method

中图分类号: 

  • O241.82