摘要：In this paper, some exact nonlocal boundary conditions are derived on an elliptical arc artificial boundary, and they are applied to solving the exterior anisotropic problems in concave angle domains. Based on the above artificial boundary conditions, the Schwarz alternating algorithm is presented. The convergence of this algorithm is examined. Finally, some numerical examples are given to show the effectiveness of our methods..
关键词：Schwarz alternating algorithm; elliptical arc artificial boundary condition; anisotropic problem
