Application of the statistical narrow-band correlated-k model to entropy generation through non-grey gas radiation inside a spherical enclosure

Abstract

In the present work, we proposed a numerical computation of entropy generation by radiative heat transfer through an absorbing-emitting non-grey gas, confined in a spherical enclosure. The 'Ray Tracing' method is associated to the statistical narrow band correlated-k SNBCK model, to solve the radiative transfer equation and to deduce the radiative properties of the gas. The effects of boundary conditions, enclosure dimensions and spectral correlation on the entropy generation are presented. The results show that the volumetric radiative entropy production is more developed in heating configuration while the wall radiative entropy production is more developed in case of cooling.