摘要
本文对二阶自适应开路边条件(以下简称AOBC2)作了进一步的讨论。指出了对局部瞬时等价波方向(±k_x,k_y)~T的选取范围应有所限制,即要求k_x^2+k_y^2/2>0,且k_x^2≠k_y^2。由于在实际运用中,波的传播方向一般不会与人为边界近于平行,故这些限制不会影响本方法的使用价值。同更多的现有方法作比较,进一步证明了本方法的有效性。
In this paper the limitation of the adaptive open boundary condition offered in the papers [7-9] is given. The critical local parameter involved in the mentioned method is its 'main' wave direction (kx,ky)T, which has to be chosen to meet the requirements that kx2-ky2/2>0 and kx2≠ 0.5. However, these additional requirements make no any practical limitations in practice. The advantage of the method over the others is demonstrated in test examples.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
1992年第3期350-358,共9页
Chinese Journal of Hydrodynamics
关键词
开路边条件
稳定性
自适应
open boundary condition, stability, adaptive condition.
