Akram Mazgar

TL;DR: In this article, a laminar flow of a temperature-dependent and non-grey gas in the entrance region of the channel was investigated, where over-heated water vapor was chosen as a gas because of its large absorption bands.

TL;DR: In this article, the authors investigated entropy production due to coupled natural convection/radiation heat transfer phenomenon in an inclined rectangular enclosure, isothermally heated from the bottom side.

TL;DR: In this article, a numerical study was performed to analyse the entropy generation through combined non-grey gas radiation and natural convection in vertical circular tubes, where the flow field and the energy equations were solved simultaneously and the radiative properties of water vapour and its spectral nature were modelled by using the 'Ray tracing' method through S4 directions, associated with the "Statistical Narrow Band Correlated-K (SNBCK)" model.

TL;DR: In this article, the radiative heat transfer of non-grey gas confined in a cylindrical annulus with isothermal walls was analyzed using the Ray Tracing method, which was associated to the statistical narrow bands correlated-k (SNBcK) model to compute the medium radiative properties.

TL;DR: In this paper, numerical results of combined effects of non-gray gas radiation and natural convection between two vertical plates with partial heating at walls are reported. But the results show that there is no major influence of two-dimensional radiation to reduce the difference between the reported top and bottom heating for the chosen gas.