Zobrazeno 1 - 10
of 150
pro vyhledávání: '"José Casas-Vázquez"'
Publikováno v:
Physics Letters A. 376:1641-1644
We present a theoretical analysis of thermal rectification in a porous Si/bulk Si device, taking into account ballistic effects in phonon-pore collisions when phonon mean free path is much longer than the radius of the pores. Starting from an approxi
Publikováno v:
Journal of Non-Newtonian Fluid Mechanics. 152:36-44
Polymer solutions and turbulent superfluids have in common the presence of a complex tangle of lines – macromolecules in the former, quantized vortex lines in the latter – which contribute to the internal friction and viscous pressure of the syst
Publikováno v:
Physics Letters A. 372:2172-2175
A binary mixture of ideal gases in Couette flow is studied in the framework of information theory. It is shown that if the total shear viscous pressure is imposed as a constraint, there is equipartition of energy between the different chemical specie
Publikováno v:
The European Physical Journal Special Topics. 146:189-197
The relation between pattern size and maximum population density is obtained for the stationary state of populations living in a refuge surrounded by a hostile environment. The population dynamics is described by reaction–diffusion equations whose
Publikováno v:
The European Physical Journal Special Topics. 146:13-20
In the presence of shear flow, the constitutive equation for the diffusion flux in polymer solutions exhibits two kinds of coupling. One of these couplings comes from the viscous pressure contribution to the chemical potential, and the other one from
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 375:51-64
The front dynamics in reaction–diffusion equations with a piecewise linear reaction term is studied. A transition from pushed-to-pulled fronts when they propagate into the unstable state is found using a variational principle. This transition occur
Publikováno v:
The European Physical Journal B. 53:503-507
The speed of pulled fronts for parabolic fractional-reaction-dispersal equations is derived and analyzed. From the continuous-time random walk theory we derive these equations by considering long-tailed distributions for waiting times and dispersal d
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 358:49-57
The expressions for the nonequilibrium temperature derived from the fluctuation–dissipation theorem and from the differential of the informational nonequilibrium entropy for ideal gases under shear flow are compared. Both temperatures are different
Publikováno v:
Polymer. 46:10372-10377
The influence of a flow on the transfer of a polymer solution from a porous matrix to a flowing fluid is analysed. Since the flow modifies the free energy of the solution, through stretching and orientation of the macromolecules, the thermodynamic dr
Publikováno v:
ResearcherID
A phenomenological approach of heat transfer in nano-systems is proposed, on the basis of a continued-fraction expansion of the thermal conductivity, obtained within the framework of extended irreversible thermodynamics. Emphasis is put on the transi