Radiative thermal diodes based on two-element structures rectify heat flows thanks to a temperature dependence of material optical properties. The transport asymmetry through these systems, however, remains weak without significant change in properties with the temperature. Here we explore three-element radiative systems and demonstrate that strong conductance can appear because many-body inter...

Context. X-ray observations of evolved supernova remnants (e.g. the Cygnus loop and the Vela SNRs) reveal emission originating from the interaction of shock waves with small interstellar gas clouds. Aims. We study and discuss the time-dependent X-ray emission predicted by hydrodynamic modeling of the interaction of a SNR shock wave with an interstellar gas cloud. The scope includes: 1) to study...

the present study deals with the analysis of the effects of radiative heat transfer of micropolar fluid flow over a porous and stretching sheet in the presence of magnetic field. the dynamic viscosity and thermal conductivity coefficient have formulated by temperature-dependent relations to obtain more exact results. the flow is supposed two-dimensional, incompressible, steady and laminar and t...

A model has been developed to calculate the steady state vibrational distribution of an anharmonic oscillator under conditions of thermal nonequilibrium. The model includes vibration-vibration and vibrationtranslation collisional processes as well as radiative decay. Numerical calculations are shown to be in reasonably good agreement with experimental data obtained in electrically excited N^-CO...