Self-similar solutions for some nonlinear evolution equations: KdV, mKdV and Burgers equations (original) (raw)

New solitary wave solutions of some nonlinear evolution equations with distinct physical structures

Reports on Mathematical Physics, 2008

In this paper, we obtain solitary wave solutions for some nonlinear partial differential equations. The Exp-function method is used to establish solitary wave solutions for Calogero-Bogoyavlenskii-Schiff and general modified Degasperis-Procesi and Camassa-Holm equations. The result shows that the Exp-function method yields new and more general solutions. Moreover, this method with the aid of symbolic computation provides a very effective and powerful mathematical tool for solving nonlinear evolution equations arising in mathematical physics.

New Periodic Wave Solution to Nonlinear Evolution Equations Arising in Physics

2009

In this paper,we make use of extended mapping method to seek new and more general exact solutions of nonlinear equations.Being concise and straightforward,this method is applied on two nonlinear evolution equations arising in physics,namely,generalized Hirota-Satsuma coupled KdV system and Whitham-Broer-Kaup equation.As a result, many new and more general exact solutions are obtained including Jacobi elliptic function solutions,hyperbolic function solutions and trigonometric function solutions.It is shown that the proposed method provides a very effective and powerful mathematical tool for solving many nonlinear evolution equations in mathematical physics.

Some exact solutions of KdV-Burgers-Kuramoto equation

Journal of Physics Communications, 2019

Some exact solutions of KdV-Burgers-Kuramoto (KBK) equation are derived by the anzas and tanh methods. Also, the most general Lie point symmetry group of the KBK equation are presented using the basic Lie symmetry method. As well as, the non-classical and weak symmetries of this equation, as well as the corresponding similarity reductions, are investigated. Finally, the classical and non-classical symmetries of KBK and KdV-Burgers (KB) equations are compared.

On the Exact Solutions of the Nonlinear Wave and ϕ4-Model Equations

Journal of Nonlinear Mathematical Physics, 2008

The nonlinear wave equation with variable long wave velocity and the Gordon-type equations (in particular, the φ4-model equation) display a range of symmetry generators, inter alia, translations, Lorentz rotations and scaling-all of which are related to conservation laws. We do a study of the symmetries of a large class with a view to reduction and solution of these equations which has been analysed, to some extent, using other techniques giving rise to a different class of solutions.

Soliton Solutions, Conservation Laws, and Reductions of Certain Classes of NonlinearWave Equations

Zeitschrift für Naturforschung A, 2012

In this paper, the soliton solutions and the corresponding conservation laws of a few nonlinear wave equations will be obtained. The Hunter-Saxton equation, the improved Korteweg-de Vries equation, and other such equations will be considered. The Lie symmetry approach will be utilized to extract the conserved densities of these equations. The soliton solutions will be used to obtain the conserved quantities of these equations.

The ()-expansion method and travelling wave solutions of nonlinear evolution equations in mathematical physics

Physics Letters A, 2008

The ( G G )-expansion method is firstly proposed, where G = G(ξ ) satisfies a second order linear ordinary differential equation (LODE for short), by which the travelling wave solutions involving parameters of the KdV equation, the mKdV equation, the variant Boussinesq equations and the Hirota-Satsuma equations are obtained. When the parameters are taken as special values the solitary waves are also derived from the travelling waves. The travelling wave solutions are expressed by the hyperbolic functions, the trigonometric functions and the rational functions. The proposed method is direct, concise, elementary and effective, and can be used for many other nonlinear evolution equations.

Some Travelling Wave Solutions of KdV-Burgers Equation

In this paper we study the extended Tanh method to obtain some exact solutions of KdV-Burgers equation. The principle of the Tanh method has been explained and then apply to the nonlinear KdV-Burgers evolution equation. A finite power series in tanh is considered as an ansatz and the symbolic computational system is used to obtain solution of that nonlinear evolution equation. The obtained solutions are all travelling wave solutions.

General Solution of Two Generalized Form of Burgers Equation by Using the

Applied Mathematics, 2012

Nonlinear evolution equations (NLEEs) have been the subject of study in various branches of mathematicalphysical sciences such as physics, biology, chemistry, etc. The analytical solutions of such equations are of fundamental importance since a lot of mathematical-physical models are described by NLEEs. Among the possible solutions to NLEEs, certain special form solutions may depend only on a single combination of variables such as traveling wave variables. In the literature, there is a wide variety of approaches to ...