透射边界在求解波源问题中的应用研究

Study on application of transmitting boundary to solving wave source problems

针对应用透射边界求解波源问题的过程提出了一项简单易行的具体措施,即在试算一定时间长度的基础上通过相关处理获得对应于每个边界节点的人工波速,并应用于透射边界人工波速的设置中。数值实验证明,在波源问题的求解中采用这种方法选择人工波速,可以在不增加计算失稳风险的同时,提高数值计算精度。

In this paper, an easy and simple specific measure was proposed for the application of transmission boundary source problem, we can get the artificial wave velocity of every point on boundary by correlative process- ing based on the trial computation. Numerical experiments prove that this method can increase accuracy of calcula- tion without increasing the computational instability risk in solving the wave source problem.