Radiative transfer effects of an axisymmetric particulate jet into a cylindrical pipe

This paper discusses the radiative transfer effects of an axisymmetric gas-particles jet into a cylindrical pipe. The medium is gray and it participates to radiation by emission, absorption and scattering. The two-phase flow problem is solved numerically by the finite volume method. We investigate the radiative transfer through a sensitivity analysis which considers the effects of the particle radiative properties and the particle number density on the temperature field and on the radiative heat fluxes of the two-phase flow domain. Analysis of the temperature profile in the cylinder, without and then with particle radiation effects, shows a decrease in the medium temperatures and thus an important role of the radiative transfer. These results also show that the presence of scattering makes the medium temperature more uniform. Finally, analysis of the particle number density, through the variation of the injection velocity, shows that a decrease in the injection velocity decreases the temperatures of the gas and particles and rapidly equilibrates the gas and particle temperatures.