The test problem is the boundary integral equation from the exterior Dirichlet problem for the Helmholtz equation with a smooth arc as its boundary, and it is solved using BEM both with and without the singular elements.

• 以一条弧为边界的Helmholtz方程外 Dirichlet问题导出的边界积分方程为例 ,分别用一般的边界元法和带奇性单元的边界元法进行计算。