一种易用于抛物线方程的非局部边界条件

An easily used nonlocal boundary condition for parabolic equation

提出一种将非局部边界条件用于抛物线方程的方法,该方法不仅可以处理各个角度波的入射问题,而且可以直接应用于PE的各种算法中,数值结果表明用NLBC处理平面波的传播时,计算结果与实际符合得较好。

:In this paper, a useful nonlocal boundary conditions method are offered which can be easily applied to parabolic equation. The method can not only handle the propagation of plane waves even when very large angles are involved but also can be worked with all kinds of parabolic equation algorithms directly. Numerical results show that with the nonlocal boundary condition the propagation of plane waves is perfectly (handled).