A leap-frog discontinuous Galerkin time-domain method of analyzing electromagnetic scattering problems

• 来源期刊: 中国物理B（英文版）
• 关键词: discontinuous Galerkin time-domain simulation radar cross section
• 年，卷（期）: 2017,（10）
• 页码范围: 205-212
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-1056/26/10/104101

摘要

Several major challenges need to be faced for efficient transient multiscale electromagnetic simulations,such as flexible and robust geometric modeling schemes,efficient and stable time-stepping algorithms,etc.Fortunately,because of the versatile choices of spatial discretization and temporal integration,a discontinuous Galerkin time-domain (DGTD) method can be a very promising method of solving transient multiscale electromagnetic problems.In this paper,we present the application of a leap-frog DGTD method to the analyzing of the multiscale electromagnetic scattering problems.The uaiaxial perfect matching layer (UPML) truncation of the computational domain is discussed and formulated in the leap-frog DGTD context.Numerical validations are performed in the challenging test cases demonstrating the accuracy and effectiveness of the method in solving transient multiscale electromagnetic problems compared with those of other numerical methods.