Study of Hydrogen Combustion in a Mini Annular Combustion Chamber Using CFD

Computational fluid dynamics analysis of hydrogen combustion in a conceptual designed mini annular combustion chamber for sustainable combustion with a power output of 50 kW with different air fuel ratios such as leaner mixture 25:1, optimized mixture 34:1 and rich mixture 40:1 is carried out in this study. A three-dimensional model that contains the species transport equations and k-ε turbulence model is used to study the combustion process. When an ideal air–fuel ratio is maintained, the small annular combustion chamber can achieve complete combustion of hydrogen with a low emission of NOx. High combustion efficiency and uniform temperature distribution are seen throughout the annular combustion chamber with a temperature distribution of about 1500 K at the output. Analysis of the velocity profile distribution reveals a stable combustion with no flame instability.