ABSTRACT
Within a mixture, each species may in principle exchange mass, momentum and energy with the other species: these exchanges are referred to as (internal) transfers. Here, the mixture is viewed as a thermodynamically open system. Indeed, each point in the mixture or at the boundary may also exchange mass, momentum and energy directly with the surroundings: the latter exchanges correspond to growth processes. Various forms of energy can be exchanged between a tissue and its surroundings. Irradiation is known to increase the collagen content and also to decrease the permeability. Balance equations in the multi-species mixture context account for internal transfers across phases, and external contributions in terms of mass, momentum, energy and entropy.
