计算物理 ›› 2001, Vol. 18 ›› Issue (6): 481-486.

• 论文 •    下一篇

射线追踪、辛几何算法与波场的数值模拟

陈景波, 秦孟兆   

  1. 中国科学院计算数学与科学工程计算研究所, 北京 100080
  • 收稿日期:2000-12-04 修回日期:2001-05-08 出版日期:2001-11-25 发布日期:2001-11-25
  • 作者简介:胨景波(1966-),男,博士,河北晋州,从事Hamilton仰系统保结构算法的研究,北京2735信箱.
  • 基金资助:
    国家九五自然科学基金重大项目(油储)资助课题(49894190)

RAY TRACING、 SYMPLECTIC ALGORITHMS AND WAVE FIELD SIMULATION

CHEN Jing-bo, QIN Meng-zhao   

  1. Institute of Computational Mathematics and Scientific Engineering Computing, Chinese Academy of Sciences, Beijing 100080, P R China
  • Received:2000-12-04 Revised:2001-05-08 Online:2001-11-25 Published:2001-11-25

摘要: 论述了射线追踪、辛几何算法与波场的数值模拟之间的关系,说明了辛几何算法长时间守恒性质及运用辛几何算法进行射线追踪的必要性.对线性层状模型,利用辛几何算法和Maslov渐近理论对波场进行了数值模拟,并与解析解进行了比较.

关键词: 射线追踪, 辛几何算法, Maslov渐近理论, 波场模拟

Abstract: The relationship between ray tracing、symplectic algorithm and wave field simulation is presented. The long time conservation property of symplectic algorithm and the necessity of ray tracing using symplectic algorithm are demonstrated. In addition, wave field simulation using Maslov asymptotic theory and symplectic algorithm for linear layer model is performed. The comparison of the numerical solution with the analytic solution is carried out.

Key words: ray tracing, symplectic algorithm, Maslov asymptotic theory, wave field simulation

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