Applied Mathematics and Mechanics (English Edition) ›› 2017, Vol. 38 ›› Issue (12): 1721-1732.doi: https://doi.org/10.1007/s10483-017-2288-8

• 论文 • 上一篇    下一篇

Optimized finite difference iterative scheme based on POD technique for 2D viscoelastic wave equation

Hong XIA1, Zhendong LUO2   

  1. 1. School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, China;
    2. School of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
  • 收稿日期:2017-05-01 修回日期:2017-07-26 出版日期:2017-12-01 发布日期:2017-12-01
  • 通讯作者: Zhendong LUO E-mail:zhdluo@ncepu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (No. 11671106) and the Fundamental Research Funds for the Central Universities (No. 2016MS33)

Optimized finite difference iterative scheme based on POD technique for 2D viscoelastic wave equation

Hong XIA1, Zhendong LUO2   

  1. 1. School of Control and Computer Engineering, North China Electric Power University, Beijing 102206, China;
    2. School of Mathematics and Physics, North China Electric Power University, Beijing 102206, China
  • Received:2017-05-01 Revised:2017-07-26 Online:2017-12-01 Published:2017-12-01
  • Contact: Zhendong LUO E-mail:zhdluo@ncepu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (No. 11671106) and the Fundamental Research Funds for the Central Universities (No. 2016MS33)

摘要: This study develops an optimized finite difference iterative (OFDI) scheme for the two-dimensional (2D) viscoelastic wave equation. The OFDI scheme is obtained using a proper orthogonal decomposition (POD) method. It has sufficiently high accuracy with very few unknowns for the 2D viscoelastic wave equation. Existence, stability, and convergence of the OFDI solutions are analyzed. Numerical simulations verify efficiency and feasibility of the proposed scheme.

关键词: censored data, a.s. convergence, asymptotic normality, K-M estimator, convergence, optimized finite difference iterative (OFDI) scheme, proper orthogonal decomposition (POD), viscoelastic wave equation, existence, numerical simulation, stability

Abstract: This study develops an optimized finite difference iterative (OFDI) scheme for the two-dimensional (2D) viscoelastic wave equation. The OFDI scheme is obtained using a proper orthogonal decomposition (POD) method. It has sufficiently high accuracy with very few unknowns for the 2D viscoelastic wave equation. Existence, stability, and convergence of the OFDI solutions are analyzed. Numerical simulations verify efficiency and feasibility of the proposed scheme.

Key words: censored data, a.s. convergence, asymptotic normality, K-M estimator, stability, numerical simulation, convergence, viscoelastic wave equation, proper orthogonal decomposition (POD), existence, optimized finite difference iterative (OFDI) scheme

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