A study of self-adjointness, Lie analysis, wave structures, and conservation laws of the completely generalized shallow water equation

• Published in: European physical journal plus Vol. 139; no. 6; p. 489
• Main Authors: Ansari, Ali R., Jhangeer, Adil, Imran, Mudassar, Beenish, Inc, Mustafa
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 05.06.2024; Springer Nature B.V
• Subjects: Applied and Technical Physics; Atomic; Completeness; Complex Systems; Condensed Matter Physics; Conservation laws; Differential equations; Graphical representations; Group theory; Lie groups; Mathematical and Computational Physics; Methods; Molecular; Numerical analysis; Optical and Plasma Physics; Partial differential equations; Physical properties; Physics; Physics and Astronomy; Regular Article; Shallow water; Shallow water equations; Solitary waves; Symmetry; Theoretical; Variables; Water waves
• ISSN: 2190-5444
• DOI: 10.1140/epjp/s13360-024-05310-z

This article explores the analysis of the completely generalized Hirota–Satsuma–Ito equation through Lie symmetry analysis. The equation under consideration represents a more comprehensive form of the (2+1)-dimensional HSI equation, encompassing four additional second-order derivative terms: Δ 3 H ϖ ϖ , Δ 4 H ϖ ι , Δ 3 H ϖ ϖ , Δ 4 H ϖ ι , and Δ 6 H ι ι , emerging from the inclusion of second-order dissipative-type elements. We calculate the infinitesimal generators and determine the symmetry group for each generator using the Lie group invariance condition. Employing the conjugacy classes of the Abelian algebra, we transform the considered equation into an ordinary differential equation through similarity reduction. Subsequently, we solve these ordinary differential equations to derive closed-form solutions for the completely generalized Hirota–Satsuma–Ito equation under certain conditions. For other scenarios, we utilize the extended direct algebraic method to obtain soliton solutions. Furthermore, we rigorously calculated the conserved quantities corresponding to each symmetry generator, the conservation laws of the model are established using the multiplier approach. Additionally, we present the graphical representation of selected solutions for specific values of the physical parameters of the equation under scrutiny.