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arXiv · 2608.03443

Lie symmetry, Painlev\'e analysis and Conservation laws for (1+2)-Dimensional Kudryashov-Sinelshchikov (KS) equation

Apeksha Patil·Amlan Kanti Halder·Rajeswari Seshadri
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Abstract

The wave propagation of pressures in liquids that contain gas bubbles are an important concern in fluid dynamics and mathematical physics. The Kudryashov Sinelshchikov equation offers a useful mathematical framework in the study of nonlinear wave motion in bubbly liquids with reference to the effects of viscosity and heat exchange between liquid and gaseous phases. This paper examines the dimensional reduced (1 + 2)-dimensional Kudryashov Sinelshchikov equation, a fourth-order nonlinear partial differential equation. Analyzing the Lie symmetry, an infinite dimension Lie algebra is obtained because of the presence of arbitrary functions. By applying the commutative relation between these vector fields and choosing the specific forms for the arbitrary functions, helps the governing PDE to reduce to fourth order ODEs. The reduced equations are then investigated using the Painleve analysis to give solutions in the form of Laurent series. In addition, multiplier approach is used to obtain the conserved vectors and to analyzed conservations properties of the equation. We obtain four cases and the Conservation laws were verified for all the cases.

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Apeksha Patil, Amlan Kanti Halder, Rajeswari Seshadri. 2026-08-04. Lie symmetry, Painlev\'e analysis and Conservation laws for (1+2)-Dimensional Kudryashov-Sinelshchikov (KS) equation. https://arxiv.org/abs/2608.03443

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