Flame Modelling of Premixed Ammonia Combustion in Swirl Burner using LES

TL;DR

This paper uses LES simulations to study how operational parameters influence flame behavior in premixed ammonia/hydrogen combustion within a swirl burner, aiming to optimize efficiency and emissions.

Contribution

It introduces a detailed LES modeling approach to analyze the effects of fuel blend ratios, ignition, and flow dynamics on flame properties in ammonia combustion.

Findings

Identified optimal conditions for thermal efficiency.

Suggested operational parameters to control NOx emissions.

Demonstrated the impact of reduced chemical mechanisms on simulation accuracy.

Abstract

The objective of the LES simulation is to investigate how operational parameters affect flame properties in combustion of the premixed NH3/H2/air inside a swirling burner. Key parameters explored include the differential blend ratio of NH3/H2 fuels, ignition conditions, flow dynamics, and the balance between accuracy and computational cost using reduced chemical kinetic mechanisms. The numerical simulation findings suggest optimal operational conditions for enhancing thermal efficiency and controlling NOx emissions for experimental setups, scaling up combustion platforms.