We have used the thermodynamical description of a chemical reaction as a diffusion process along an internal coordinate to analyze fluctuations in the density of the constituents, which are treated under the framework of fluctuating hydrodynamics. We then obtain a Langevin equation for the...

We have analyzed the implications of the energy of anisotropy of a ferromagnetic sphere suspended in a carrier fluid in its dynamics. The rotational viscosity, which for a particular geometry represents the increase of the viscosity of the system due to the presence of an external magnetic...

Diffusion of transported particles in the intracellular medium is described by means of a generalized diffusion equation containing forces due to the cytoskeleton network and to the protein motors. We find that the enhanced diffusion observed in experiments depends on the nature of the force...

We study the dynamics of an axisymmetric particle suspended in a fluid. The approach we use is based on the induced forces method. We then obtain formal expressions for the friction tensors from which one derives explicit formulas for the friction coefficients depending on the shape of the...

Having characterized the macroscopic behavior of a ferrofluid, giving expressions for the viscosities, as well as for the average of its magnetization, we analyze the dynamics of a non-magnetic particle (magnetic hole) suspended in a ferrofluid. Although the particles are not magnetic, when they...

The equal-time or static temperature correlation function from fluctuations originated at a surface is computed. Such fluctuations come from a random heat flux appearing in Newton's law of cooling. The correlation is studied in the real space and for different values of the Nusselt number.

In a fluid in elongational flow the diffusion of tagged particles differs from the same process in an equilibrium fluid. The diffusion coefficient becomes direction, frequency, wave vector and elongation rate dependent. In the context of nonequilibrium fluctuating hydrodynamics explicit...

Voltage fluctuations near Gunn threshold are analyzed by introducing a model which takes into account the presence of inhomogeneities in the donor density. Correlation functions in different representations are computed and critical behavior is discussed. Our results are compared with Keizer's...

Some aspects of the linear chain of harmonic oscillators (“harmonic liquid”) are studied. In particular we compute the stationary correlation functions of coordinates and momenta of the oscillators for a particular non-equilibrium steady state. We find that the coordinates and momenta...

In this paper we introduce some of the main ideas over transport phenomena in suspensions of ferromagnetic particles. In particular, an explicit calculation of the viscosities for spherical particles, based on a solution of the corresponding Smoluchowski equation, is carried out and compared...