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New exact solutions and numerical approximations of the generalized KdV equation | ||
| Computational Methods for Differential Equations | ||
| مقاله 3، دوره 9، شماره 3، مهر 2021، صفحه 670-691 اصل مقاله (586.77 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22034/cmde.2020.36253.1628 | ||
| نویسندگان | ||
| Seydi Battal Karakoc* 1؛ Khalid Karam Ali2 | ||
| 1Department of Mathematics, Faculty of Science and Art, Nevsehir Haci Bektas Veli University, Nevsehir, 50300, Turkey. | ||
| 2Department of Mathematics, Faculty of Science, AL-Azhar University, Nasr City, P.N.Box: 11884- Cairo, Egypt. | ||
| چکیده | ||
| This paper is devoted to create new exact and numerical solutions of the generalized Korteweg-de Vries (GKdV) equation with ansatz method and Galerkin finite element method based on cubic B splines over finite elements. Propagation of a single solitary wave is investigated to show the efficiency and applicability of the proposed methods. The performance of the numerical algorithm is proved by computing L2 and L∞ error norms. Also, three invariants I1, I2, and I3 have been calculated to determine the conservation properties of the presented algorithm. The obtained numerical solutions are compared with some earlier studies for similar parameters. This comparison clearly shows that the obtained results are better than some earlier results and they are found to be in good agreement with exact solutions. Additionally, a linear stability analysis based on Von Neumann's theory is surveyed and indicated that our method is unconditionally stable. | ||
| کلیدواژهها | ||
| Generalized Korteweg-de Vries equation؛ Finite element method؛ Ansatz method؛ Galerkin؛ Cubic B-spline؛ Soliton | ||
| مراجع | ||
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