Combined Compact Symplectic Schemes for the Solution of Good Boussinesq Equations

Abstract

Good Boussinesq equations are considered in this work. First, we apply three combined compact schemes to approximate spatial derivatives of good Boussinesq equations. Then, three fully discrete schemes are developed based on a symplectic scheme in the time direction, which preserves the symplectic structure. Meanwhile, the convergence and conservation of the fully discrete schemes are analyzed. Finally, we present numerical experiments to confirm our theoretical analysis. Both our analysis and numerical tests indicate that the fully discrete schemes are efficient in solving the spatial derivative mixed equation.

Keywords

• Hamiltonian system
• good Boussinesq equation
• symplectic scheme
• combined compact scheme
• conservation