Optimal 25-Point Finite-Difference Subgridding Techniques for the 2D Helmholtz Equation
Joint Authors
Chen, Zhongying
Chen, Jian
Wu, Tingting
Source
Mathematical Problems in Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-03-20
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
We present an optimal 25-point finite-difference subgridding scheme for solving the 2D Helmholtz equation with perfectly matched layer (PML).
This scheme is second order in accuracy and pointwise consistent with the equation.
Subgrids are used to discretize the computational domain, including the interior domain and the PML.
For the transitional node in the interior domain, the finite difference equation is formulated with ghost nodes, and its weight parameters are chosen by a refined choice strategy based on minimizing the numerical dispersion.
Numerical experiments are given to illustrate that the newly proposed schemes can produce highly accurate seismic modeling results with enhanced efficiency.
American Psychological Association (APA)
Wu, Tingting& Chen, Zhongying& Chen, Jian. 2016. Optimal 25-Point Finite-Difference Subgridding Techniques for the 2D Helmholtz Equation. Mathematical Problems in Engineering،Vol. 2016, no. 2016, pp.1-16.
https://search.emarefa.net/detail/BIM-1111783
Modern Language Association (MLA)
Wu, Tingting…[et al.]. Optimal 25-Point Finite-Difference Subgridding Techniques for the 2D Helmholtz Equation. Mathematical Problems in Engineering No. 2016 (2016), pp.1-16.
https://search.emarefa.net/detail/BIM-1111783
American Medical Association (AMA)
Wu, Tingting& Chen, Zhongying& Chen, Jian. Optimal 25-Point Finite-Difference Subgridding Techniques for the 2D Helmholtz Equation. Mathematical Problems in Engineering. 2016. Vol. 2016, no. 2016, pp.1-16.
https://search.emarefa.net/detail/BIM-1111783
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1111783