报告题目 (Title)：声散射问题的直角网格方法
报告人 (Speaker)：应文俊 教授（上海交通大学）
报告时间 (Time)：2026年5月15日（周五）14: 00
报告地点 (Place)：校本部GJ303
邀请人(Inviter)：李常品、蔡敏
主办部门：理学院数学系
报告摘要：We present a Cartesian grid method for homogeneous and inhomogeneous scattering problems on complex domains. The method is a generalization of the traditional boundary integral method. It solves the scattering problem in the framework of boundary integral method but avoids direct evaluation of boundary and volume integrals. The evaluation is done by indirectly solving equivalent interface problems on Cartesian grids with fast solvers. For (exterior) problems on unbounded domains, we introduce an artificial circle or sphere to accelerate the solution of interface problems, while preserving accuracy. In the talk, we shall also present numerical examples to demonstrate the method.
