PML技术及非局部边界条件在抛物线方程中的应用  

PML technique and non-local boundary conditions for the parabolic equation

作　　者：黄志祥[1] 吴先良[1] 

机构地区：[1]安徽大学计算智能与信号处理教育部重点实验室,安徽合肥230039

出　　处：《合肥工业大学学报（自然科学版）》2005年第2期176-179,共4页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目 (60 3 710 41) ;安徽省教育厅重点科研基金资助项目 (2 0 0 2 kj3 2 )

摘　　要：文章引入并分析了用于抛物线方程算法的 2种吸收边界条件 :PML(完全匹配层 )及非局部边界条件。通过计算实例说明其与抛物线方程算法结合 ,不仅可以处理无界空间波的传播问题 ,而且可以用于物体的散射计算 ,并进一步比较了Two kinds of absorbing boundary condition for the parabolic equation algorithms,the perfectly matched layer(PML)(based on “stretched coordinate”) and non-local boundary conditions, are introduced and analyzed. Numerical results show that they can work with parabolic equation algorithms to handle not only unbounded space wave propagation problems but also object scattering problems. The advantages and weaknesses of the two kinds of absorbing boundary condition are compared.

关 键 词：抛物线方程算法 完全匹配层 非局部边界条件 

分 类 号：TN011[电子电信—物理电子学]