COUPLING OF FINITE ELEMENT AND BOUNDARY ELEMENT METHODS FOR THE SCATTERING BY PERIODIC CHIRAL STRUCTURES

• 来源期刊: 计算数学（英文版）
• 关键词: Chiral media Periodic structures Finite element method Boundary element method Convergence
• 年，卷（期）: 2008,（3）
• 页码范围: 261-283
• 页数: 23页
• 语种: 英文

摘要

Consider a time-harmonic electromagnetic plane wave incident on a biperiodic structure in R3. The periodic structure separates two homogeneous regions. The medium inside the structure is chiral and nonhomogeneous. In this paper, variational formulations coupling finite element methods in the chiral medium with a method of integral equations on the periodic interfaces are studied. The well-posedness of the continuous and discretized problems is established. Uniform convergence for the coupling variational approximations of the model problem is obtained.