近轴近似
航程(航空)
波动方程
有限差分
数学分析
边值问题
边界(拓扑)
数学
有限差分法
物理
光学
材料科学
复合材料
梁(结构)
标识
DOI:10.1785/bssa0780062089
摘要
Abstract It is shown that the paraxial approximations to the wave equation used by Clayton and Engquist can be improved upon, allowing more accurate finite-difference formulations at internal boundaries and corners, and formulations that are stable over a wider range of the parameters.
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