7 papers
Nonholonomic constrains: why does not the least action principle leads to equations describing the motion consistent with the physical behaviour?
Umberto Lucia
The least action principle seems not to lead to equations describing the motion consistent with the physical behavior for nonholonomic constrains. Here an answer to this question i…
Paths and stochastic order in open systems
Umberto Lucia
The principle of maximum irreversible is proved to be a consequence of a stochastic order of the paths inside the phase space; indeed, the system evolves on the greatest path in th…
The thermodynamic hamiltonian for open systems
Umberto Lucia
The variational method is very important in mathematical and theoretical physics because it allows us to describe the natural systems by physical quantities independently from the…
Irreversibility and maximum generation in -generalized statistical mechanics
Umberto Lucia
Irreversibility and maximum generation in -generalized statistical mechanics
Entropy generation and jet engine optimization
Umberto Lucia
In 2009, it was shown that, with an original approach to hydrodynamic cavitation, a phenomenological model was realized in order to compute some of the physical parameters needed f…
Maximum entropy generation in open systems: the Fourth Law?
Umberto Lucia
This paper develops an analytical and rigorous formulation of the maximum entropy generation principle. The result is suggested as the Fourth Law of Thermodynamics.