频域吸收边界条件的构造理论

Construction of the Absorbing Boundary Conditions in Frequency Domain

摘要:

在频域中推导了适用于差分类数值方法的吸收边界条件的构造方法，并通过选取不同参数导出了几种现有的吸收边界条件。在计算了一般形式的吸收边界条件的反射系数之后，提出了一种简单实用的自适应吸收边界条件。

Abstract:

A theory constructing the absorbing boundary condition (ABC) for differential methods in frequency domain is concluded. By choosing adapted parameters, some existing absorbing boundary conditions are derived from the unified form. After the reflection coe