Large Eddy Simulations of hydrogen combustion in a reverse flow micro gas turbine burner

Hydrogen is gaining more and more interest for future power generation and heating systems. The current need for decarbonization of the energy sector indeed puts hydrogen forward as a suitable energy carrier. The aim of this research is to perform numerical simulations of the combustion process of H2, H2-derived fuels and their mixtures in innovative micro-Gas Turbines (mGT) combustors. Large Eddy Simulations (LES) are performed using YALES2 research code, in order to predict combustion efficiencies and pollutant emissions. Experimental data from a lab-scale mGT combustion chamber will be used to validate the model. The low-Mach number Navier- Stokes equations are solved using the variable-density low-Mach solver of YALES2. A first modelling step is used to solve the fuel mixing problem in a non-reacting flow, before moving on to the multi-species reacting flow. Having trustworthy computational models on hand for the combustion of H2 and H2-derived fuels will be beneficial during the development of advanced, decarbonized energy conversion systems.