@Article{JCM-36-4, author = {Wang, Lan and Yushun, Wang}, title = {High Order Compact Multisymplectic Scheme for Coupled Nonlinear Schrödinger-KdV Equations}, journal = {Journal of Computational Mathematics}, year = {2018}, volume = {36}, number = {4}, pages = {591--604}, abstract = {

In this paper, a novel multisymplectic scheme is proposed for the coupled nonlinear Schrödinger-KdV (CNLS-KdV) equations. The CNLS-KdV equations are rewritten into the multisymplectic Hamiltonian form by introducing some canonical momenta. To simulate the problem efficiently, the CNLS-KdV equations are approximated by a high order compact method in space which preserves $N$ semi-discrete multisymplectic conservation laws. We then discretize the semi-discrete system by using a symplectic midpoint scheme in time. Thus, a full-discrete multisymplectic scheme is obtained for the CNLS-KdV equations. The conservation laws of the full-discrete scheme are analyzed. Some numerical experiments are presented to further verify the convergence and conservation laws of the new scheme.

}, issn = {1991-7139}, doi = {https://doi.org/10.4208/jcm.1702-m2016-0789}, url = {https://global-sci.com/article/84485/high-order-compact-multisymplectic-scheme-for-coupled-nonlinear-schrodinger-kdv-equations} }