A series of numerical calculations are performed on various energy and environmental topics, which include the heating of a spherical coal particle with devolatilization, the buoyancy-driven flow in a stoker, fluid flow in a conventional Korean room, ...
A series of numerical calculations are performed on various energy and environmental topics, which include the heating of a spherical coal particle with devolatilization, the buoyancy-driven flow in a stoker, fluid flow in a conventional Korean room, cyclone combustor for the carbon burnout of flyash, liquid injection incinerator and LPG dispersion due to the rupture of pressurized town gas pipe. A control-volume based finite-difference method by Patankar is employed together with SIMPLEC algorithm. The standard k-ε turbulence and eddy breakup combustion models are implemented for Reynolds stresses and turbulent reaction. The droplet or particle trajectories are calculated using Lagrangian approach without considering the effect of turbulence. Constant evaporation rate of liquid droplet is assumed. Calculated results are presented and discussed briefly together with some difficulties in numerical calculation or modeling.