A Numerical Solution for Hirota-Satsuma Coupled KdV Equation

A Petrov-Galerkin method and product approximation technique are used to solve numerically the Hirota-Satsuma coupled Korteweg-de Vries equation, using cubic B-splines as test functions and a linear B-spline as trial functions. The implicit midpoint rule is used to advance the solution in time. Newton’s method is used to solve the block nonlinear pentadiagonal system we have obtained. The resulting schemes are of second order accuracy in both directions, space and time. The von Neumann stability analysis of the schemes shows that the two schemes are unconditionally stable. The single soliton solution and the conserved quantities are used to assess the accuracy and to show the robustness of the schemes. The interaction of two solitons, three solitons, and birth of solitons is also discussed

A Jacobi Dual-Petrov Galerkin-Jacobi Collocation Method for Solving Korteweg-de Vries Equations

The present paper is devoted to the development of a new scheme to solve the initial-boundary value Korteweg-de Vries equation which models many physical phenomena such as surface water waves in a channel. The scheme consists of Jacobi dual-Petrov Galerkin-Jacobi collocation method in space combined with Crank-Nicholson-leap-frog method in time such that at each time step only a sparse banded linear algebraic system needs to be solved. Numerical results are presented to show that the proposed numerical method is accurate and efficient for Korteweg-de Vries equations and other third-order nonlinear equations

Düzenlenmiş korteweg-de vrıes (mkdv) denkleminin sonlu elemanlar yöntemleri ile sayısal çözümleri

Bu tez çalışmasında, MKdV (Modifiye edilmiş Korteweg-deVries) denkleminin yaklaşık çözümleri dördüncü (kuartik) mertebeden B-spline fonksiyonlar kullanılarak Subdomain yöntemi ve beşinci (kuintik) mertebeden B-spline fonksiyonlar kullanılarak Kollokasyon yöntemi ile elde edilmiştir