A Novel Method For Solving Nonlinear Whitham–Broer–Kaup Equation System
In this letter, a new analytical method called homotopy perturbation method, which does not need small
parameter in the equation is implemented for solving the nonlinear Whitham–Broer–Kaup (WBK) partial differential
equation. In this method, a homotopy is introduced to be constructed for the equation. The initial approximations can be
freely chosen with possible unknown constants which can be determined by imposing the boundary and initial conditions.
Comparison of the results with those of exact solution has led us to significant consequences. The results reveal that the
HPM is very effective, convenient and quite accurate to systems of nonlinear equations. It is predicted that the HPM can be
found widely applicable in engineering.
Keywords - Homotopy perturbation method; Whitham–Broer–Kaup (WBK) equation; Modified Boussinesq; Approximate