A Numerical Analysis to Investigate the Impact of the Throat-to-Diameter Ratio on the Performance of a Gasifier

Environmental pollution and the depletion of conventional energy resources have resulted in an increasing number of individuals worldwide embracing alternative methods to meet their residential and commercial energy needs. Gasification refers to the process of converting waste materials into energy that can be effectively utilized. Additional theoretical and experimental investigations are necessary prior to the successful implementation of gasification technology in remote areas. The ongoing study pertains to the creation of a numerical model that exhibits the characteristics of being steady-state and 2D axisymmetric. The model has been specifically developed to accurately depict a waste gasification process within an Imbert downdraft gasifier that incorporates a fixed-bed configuration. The model is used to assess the performance of a gasifier design across a range of throat-to-diameter ratios (0.22–0.44) in relation to the temperature distribution and percent composition of individual gases in the producer gas. The study’s findings demonstrated that the model displayed enhanced concurrence with the empirical data reported in other scholarly works.