Abstract

The Lie symmetry analysis method and Backlund transformation method are proposed for finding similarity reduction and exact solutions to Euler equation and Navier–Stokes equation, respectively. By using symmetry reduction method, we reduce nonlinear partial differential equation to nonlinear ordinary differential equation. The infinitesimal generators and the soliton solutions to the Euler equation are obtained by Lie symmetry analysis method. Furthermore, the Backlund transformation of the Navier–Stokes equation is proposed to obtain the exact solution. We obtain the exact solutions to Navier–Stokes equation on background flow.

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