Numerical dispersion and wave-field simulation of the Runge-Kutta discontinuous Galerkin method
Numerical solving of wave equations is the key point of the forward wave field simulation,
seismic migration and the inversion imaging. In this paper, we study the numerical
dispersion of the Runge-Kutta discontinuous Galerkin (RKDG) method for solving 2-D
acoustic equations, and compare it with the ONAD method, Lax-Wendroff method and the
Staggered-Grid method. Our theoretical analysis and numerical tests show that the RKDG
method and the ONAD method can suppress the numerical dispersion more effectively …
seismic migration and the inversion imaging. In this paper, we study the numerical
dispersion of the Runge-Kutta discontinuous Galerkin (RKDG) method for solving 2-D
acoustic equations, and compare it with the ONAD method, Lax-Wendroff method and the
Staggered-Grid method. Our theoretical analysis and numerical tests show that the RKDG
method and the ONAD method can suppress the numerical dispersion more effectively …