Computational fluid dynamics (CFD) are playing an integral part of the ongoing research on pure hydrogen or hydrogen-blended fuel combustion, to accelerate the adoption of hydrogen as a cleaner fuel. Mitigating the associated challenges like flashback, NOx emissions, and combustion instabilities is key to the successful adoption of hydrogen combustion for large-scale use. Simulation can help to understand the flame characteristics and dynamics at different operating conditions, blend ratios, and