India
This research introduces a new approach, the extended Generalized Exponential Rational Differential Function (eGERDF) technique, for finding the closed-form analytical solutions of higher-order nonlinear partial differential equations such as the integrodifferential Jaulent–Miodek equation and the Zakharov–Kuzetsov equation. Building upon the generalized exponential rational function method, we developed an advanced trial solution incorporating extra terms, including functions and their derivatives. This enhancement makes the new method more generalized and practical for solving highly nonlinear partial differential equations. The obtained closed-form solutions includes rational, hyperbolic, and trigonometric functions, as well as a few free parameters, which are critical for illustrating and exhibiting the different dynamics of soliton solutions of the Jaulent–Miodek and Zakharov–Kuzetsov models. To the best of our knowledge, these solutions have been obtained for the first time in the literature using this extended technique. The results include graphical representations of the solutions for both equations, displayed in various formats such as 3D, 2D, and contour plots. These visualizations showcase multiple waveforms, including periodic waves, multi-peakons, single-soliton, lumps, rough waves, and multi-solitons, along with their interactions using numerical simulation. Such solutions play a critical role in advancing knowledge across multiple fields, including condensed matter physics, materials science, plasma physics, fluid dynamics, environmental modeling, and diverse engineering systems. The obtained findings demonstrate that the proposed method is more useful, valid, and effective, indicating its practical application.
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