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A Splitting Nearly-Analytic Symplectic Partitioned Runge–Kutta Method for Solving 2D Elastic Wave Equations.
- Source :
- International Journal of Computational Methods; Mar2024, Vol. 21 Issue 2, p1-22, 22p
- Publication Year :
- 2024
-
Abstract
- In this paper, we present a new splitting nearly-analytic symplectic partitioned Runge–Kutta (SNSPRK) method for the two-dimensional (2D) elastic wave equations. It is an extension to elastic wave equation of our recent work on the locally one-dimensional nearly-analytic symplectic partitioned Runge–Kutta (LOD-NSPRK) method for the 2D acoustic wave equations. The method is based on the spatial differential operator-split technique, in which the resulting spatial discrete matrices are symmetric unlike the conventional nearly-analytic symplectic partitioned Runge–Kutta (NSPRK) method. The stability condition is given, which has more relax restriction for the time step than the NSPRK schemes. To show the performance of the new method, numerical experiments are given. Numerical results illustrate that the SNSPRK method has better long-term calculation capability as time proceeds than the NSPRK method. [ABSTRACT FROM AUTHOR]
- Subjects :
- RUNGE-Kutta formulas
SOUND waves
ELASTIC waves
SYMMETRIC matrices
WAVE equation
Subjects
Details
- Language :
- English
- ISSN :
- 02198762
- Volume :
- 21
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- International Journal of Computational Methods
- Publication Type :
- Academic Journal
- Accession number :
- 176107764
- Full Text :
- https://doi.org/10.1142/S0219876223500287