Future developments of technologies in many fields require a deeper understanding of nonequilibrium states. We study the general mathematical structure that nonequilibrium dynamical models need to have in order to be intrinsically and strongly consistent with the second law of thermodynamics. The principle of Steepest Entropy Ascent seem to be a unifying feature of all approaches considered so far for modeling both near- and far-nonequilibrium dynamics of physical and chemical systems. By capitalizing on such unifying structure, we hope to be able to gain useful insights for the modeling of physical systems in the quantum and non-continuum domains as well as for the development of model order reduction techniques for chemical kinetics in combustion and biology.
Multiphase flows (i.e., flows where two or more phases – liquid, gas or solid – coexist) have nowadays a wide range of industrial application. For example in the oil industry , from mining (oil fields and wellbore) to the transport of hydrocarbons in the pipeline; in nuclear power plants or, more generally, in the production of energy (for example in steam cycles, geothermal or solar thermal), in industrial production cycles (mechanical processing) and in water treatment. Starting from these strong practical motivations, in recent years, we have seen a fast development of research activities in the field of fluid dynamics towards the study and solution of problems relating to multiphase flows .
In particular, in our Laboratory, we develop study and research activities, both theoretical and experimental, in the field of numerical analysis of multiphase flows and in the study and characterization of models and closure equations for particular types of flows, such as those with non-Newtonian fluids or high-viscous oils. We also deal with aeration systems for treatment of industrial fluids and liquid-liquid systems for the increase of the heat exchange in microdevices (for example, heat exchangers for electronics ).