Absorbing boundary conditions (ABCs) are constructed for the finite-element solution of the three-dimensional (3-D) vector wave equations. Applied on spherical outer boundaries, the new operators are derived by first representing the scalar components of the field in a series of powers 1//spl tau/. Then the Bayliss-Turkel (1980) boundary operators are enforced on scalar field components, which are tangential to the outer boundary. Unlike previous boundary condition constructions, the new scheme makes possible the implementation of operators of order three or higher, thus increasing the accuracy potential of analytic ABCs.
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机译:为三维(3-D)矢量波方程的有限元解构造了吸收边界条件(ABC)。应用于球面外边界,首先通过以一系列幂1 // spl tau /表示场的标量分量,得出新的算符。然后对与外部边界相切的标量场分量强制执行Bayliss-Turkel(1980)边界算符。与以前的边界条件构造不同,新方案使实施三阶或更高阶算子成为可能,从而提高了分析ABC的准确性潜力。
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