ABSTRACT:
The major focus of this dissertation is on using numerical modelling approaches to gain a better understanding of lean premixed turbulent jet flame. The critical global issues around greenhouse gas emissions from the use of fossil fuels are ultimately motivated this investigation. One of the most important methods for reducing carbon emissions is lean combustion, which is defined as having less fuel in the air-fuel mixture. Lean combustion provides a way to increase combustion efficiency and sustainability by operating at a reduced flame temperature and with greater fuel conversion efficiency. The research objectives are clearly defined: conducting extensive case study simulations in rigorous result validation, defining relevant modelling approaches as well as boundary conditions in CFD (computational fluid dynamics) simulations, and reviewing mesh sensitivity for improving numerical model resilience. To provide a thorough evaluation of emission patterns as well as properties, this work also includes simulation of lean mix jet flames. The ultimate goal is to increase our understanding of how lean combustion may reduce emissions that come from burning fossil fuels.
This project’s subsequent stage will focus on a thorough examination of simulation patterns and model predictions. Analysing the data produced by lean premixed turbulent jet flames simulations is intended to provide important new information on emission behaviours and patterns. This analytical effort forms the basis of an extensive discussion meant to promote a more profound comprehension of the complexities involved in combustion. The research endeavour aims to provide advice for the advancement of environmentally conscious and effective combustion technologies by elucidating the dynamics that characterise lean jet diffusion flames. This project is a step towards producing energy in a more environmentally friendly sustainable manner, supporting international efforts to address the pressing need to cut carbon emissions.
The final stage of this dissertation research will combine the knowledge acquired from simulations and numerical modelling of lean premixed turbulent jet flame to produce a coherent set of suggestions and findings. The significance of these discoveries is that they will serve as a foundation for continuing international initiatives to shift to renewable energy sources and lessen the harmful environmental effects of burning fossil fuels. It is expected that the synthesis of knowledge that will soon be available will provide relevant direction and guidelines for advancing global efforts towards adopting more environmentally friendly energy options. This will significantly add to the efforts to lessen the environmental consequences associated with burning fossil fuels.
AIM: This research aims to do a detailed study and analysis of the emission characteristics displayed by LPTJF.
Objectives:
- Identify the modelling and boundary conditions for CFD simulations.
- Conduct case study simulation and perform result and validations.
- Examine the mesh sensitivity of the computed results.
- Conduct lean mixture jet flame simulation.
- Discuss the simulation trends and the model predictions.
Graph: H2O mass concentration along the axial direction