A conservative Fourier pseudo-spectral method for the nonlinear Schrödinger equation

Y Gong, Q Wang, Y Wang, J Cai - Journal of Computational Physics, 2017 - Elsevier
A Fourier pseudo-spectral method that conserves mass and energy is developed for a two-
dimensional nonlinear Schrödinger equation. By establishing the equivalence between the …

Arbitrarily high-order unconditionally energy stable SAV schemes for gradient flow models

Y Gong, J Zhao, Q Wang - Computer Physics Communications, 2020 - Elsevier
We propose a family of novel, high-order numerical schemes for gradient flow models based
on the scalar auxiliary variable (SAV) approach and name them the high-order scalar …

Linear high-order energy-preserving schemes for the nonlinear Schrödinger equation with wave operator using the scalar auxiliary variable approach

X Li, Y Gong, L Zhang - Journal of Scientific Computing, 2021 - Springer
In this paper, we develop two classes of linear high-order conservative numerical schemes
for the nonlinear Schrödinger equation with wave operator. Based on the method of order …

Highly efficient approach to numerical solutions of two different forms of the modified Kawahara equation via contribution of two effective methods

A Başhan - Mathematics and Computers in Simulation, 2021 - Elsevier
The numerical solutions of the two different forms of the modified Kawahara equation
namely bell-shaped soliton solutions and travelling wave solutions that occur thereby the …

[HTML][HTML] Numerical solution for the Kawahara equation using local RBF-FD meshless method

MN Rasoulizadeh, J Rashidinia - Journal of King Saud University-Science, 2020 - Elsevier
When the number of nodes increases more than thousands, the arising system of global
radial basis functions (RBFs) method becomes dense and ill-conditioned. To solve this …

[HTML][HTML] Optimal error estimate of a linear Fourier pseudo-spectral scheme for two dimensional Klein–Gordon–Schrödinger equations

Q Hong, Y Wang, J Wang - Journal of Mathematical Analysis and …, 2018 - Elsevier
The focus of this paper is on the optimal error bounds of a Fourier pseudo-spectral
conservative scheme for solving the 2-dimensional nonlinear Klein–Gordon–Schrödinger …

Linear second order in time energy stable schemes for hydrodynamic models of binary mixtures based on a spatially pseudospectral approximation

Y Gong, J Zhao, Q Wang - Advances in Computational Mathematics, 2018 - Springer
We develop two linear, second order energy stable schemes for solving the governing
system of partial differential equations of a hydrodynamic phase field model of binary fluid …

A linearly implicit structure-preserving scheme for the Camassa–Holm equation based on multiple scalar auxiliary variables approach

C Jiang, Y Gong, W Cai, Y Wang - Journal of Scientific Computing, 2020 - Springer
In this paper, we present a linearly implicit energy-preserving scheme for the Camassa–
Holm equation by using the multiple scalar auxiliary variables approach, which is first …

New exact solutions for the space-time fractional Kawahara equation

A Daşcıoğlu, SÇ Ünal - Applied Mathematical Modelling, 2021 - Elsevier
The Kawahara equation is a model of capillary-gravity water wave and plasma waves. In this
paper, a direct method based on the Jacobi elliptic functions is presented to get analytical …

Well-posedness and dynamics of solutions to the generalized KdV with low power nonlinearity

I Friedman, O Riaño, S Roudenko, D Son, K Yang - Nonlinearity, 2022 - iopscience.iop.org
We consider two types of the generalized Korteweg–de Vries equation, where the
nonlinearity is given with or without absolute values, and, in particular, including the low …