engleski

Influence of turbulence modeling in numerical simulation of ammonia combustion

Ammonia appears to be a potential alternative fuel that can be used as a hydrogen vector and fuel for gas turbines and internal combustion engines. Chemical mechanisms of ammonia combustion are important for the development of ammonia combustion systems, but also as a mean of investigation of harmful NOx emissions, so they can be minimized. Despite of large body of experimental and modeling work on the topic of ammonia combustion, there is still need for further investigation of combustion kinetics. Taking the above stated, the object of this work is further numerical study of ammonia combustion chemistry under practical industrial conditions. After literature review, two validation cases, namely swirl premixed burner and MILD burner, were simulated with the aim of evaluating the performance of different turbulence models on combustion phenomena. Influence of turbulence chemistry interaction has also been investigated. It is expected that this study will contribute to enhance the current knowledge by providing new insights in ammonia burning conditions closely resembling those in industrial applications and consequently help to design real industrial burning systems.

Ammonia combustion ; Turbulence modeling ; Numerical simulation

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