Thermodynamic systems with friction, heat conduction, and mass transfer are shown to fit 'partially cosymplectic' structures whose evolution vector fields reproduce the Gay-Balmaz-Yoshimura equations.
Mechanical presymplectic structures and Marsden-Weinstein reduction of time-dependent Hamiltonian systems
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abstract
In 1986, Albert proposed a Marsden-Weinstein reduction process for cosymplectic structures. In this paper, we present the limitations of this theory in the application of the reduction of symmetric time-dependent Hamiltonian systems. As a consequence, we conclude that cosymplectic geometry is not appropriate for this reduction. Motived for this fact, we replace cosymplectic structures by more general structures: mechanical presymplectic structures. Then, we develop Marsden-Weinstein reduction for this kind of structures and we apply this theory to interesting examples of time-dependent Hamiltonian systems for which Albert's reduction method doesn't work.
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A geometric description of some thermodynamical systems
Thermodynamic systems with friction, heat conduction, and mass transfer are shown to fit 'partially cosymplectic' structures whose evolution vector fields reproduce the Gay-Balmaz-Yoshimura equations.