This study presents a robust numerical approach for solving the nonlinear Korteweg–de Vries–Burgers (KdVB) equation using the Cubic Hermite Collocation Method. The method employs piecewise cubic Hermite basis functions, which ensure both high-order accuracy and smooth derivative continuity across element boundaries. These features make the method particularly suitable for problems involving sharp gradients or smooth solution profiles. The proposed scheme is rigorously tested on a set of benchmark problems to demonstrate its effectiveness in accurately capturing the complex interplay between the dispersive and dissipative behavior inherent to the KdVB equation. Numerical results which are given with L_2 and L_∞ error norms exhibit excellent agreement with known analytical or previously published numerical solutions, and confirm the method’s stability, efficiency, and reliability. In addition, graphical representations of the numerical solutions are provided to visually illustrate the method’s performance. Due to its flexibility, accuracy, and ease of implementation, the Cubic Hermite Collocation Method proves to be a promising and efficient alternative for the numerical solution of nonlinear PDEs with mixed physical effects.
Korteweg–de Vries–Burgers equation Cubic Hermite collocation method Legendre roots Chebyshev roots
| Primary Language | English |
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| Subjects | Numerical Solution of Differential and Integral Equations, Numerical Analysis |
| Journal Section | Research Article |
| Authors | |
| Submission Date | July 16, 2025 |
| Acceptance Date | October 9, 2025 |
| Publication Date | December 25, 2025 |
| Published in Issue | Year 2025 Volume: 26 Issue: 4 |