Two-Dimensional Hydrodynamics as a Class of Special Hamiltonian Systems

Author:

Kulyk Kostyantyn M.ORCID,Yanovsky Vladimir V.ORCID

Abstract

The paper defines a class of Hamiltonian systems whose phase flows are exact solutions of the two-dimensional hydrodynamics of an incompressible fluid. The properties of this class are considered. An example of a Lagrangian one-dimensional system is given, which after the transition to the Hamiltonian formalism leads to an unsteady flow, that is, to an exact solution of two-dimensional hydrodynamics. The connection between these formalisms is discussed and the Lagrangians that give rise to Lagrangian hydrodynamics are introduced. The obtained results make it possible to obtain accurate solutions, such as phase flows of special Hamiltonian systems.

Publisher

V. N. Karazin Kharkiv National University

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