NUMERICAL MODELLING FOR HEAT- AND MASS TRANSFER OF SPHERICAL PARTICLES FLOWED WITH HIGH-TEMPERATURE REACTION-ABLE GAS

The non-stationary heat- and mass transfer of the spherical particle flowed with the high-temperatyre reaction-able gas taking internal reactions in the particle into consideration is investigated. Two types of the reactions are analysed: restoration of the particle material with the leaking-in reducer and formation, output and combustion of the volatile compounds. The aim is to construct the model desribing adequately such a process, to find the effective numerical methods for solution of the conjugated heat- and mass transfer problem and to perform the numerical investigation for revealing internal reactions to the flowing parameters of the particle. The Navier - Stokes equations for multicomponent gas are solved by the methods of splitting over physical processes and spatial variables in the gas phase. The diffusion type equations describing the heat transfer and diffusion of the chemical components are solved inner particle. As a result of the modelling the non-stationary distributions for temperature and concentration of the chemical components inner and outside particle and its integral characteristics have been obtainedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio