Progress in combustion investigations of hydrogen enriched hydrocarbons

This paper presents a comprehensive review of recent progress in fundamental investigations of hydrogen enriched combustion. A broad range of topics on fundamental combustion of hydrogen/hydrocarbon mixtures are discussed. The minimum ignition energy of hydrogen/hydrocarbon blends shows significant decrease with the increased hydrogen fraction XH2. With an increase of the hydrogen fraction, ignition behavior of hydrogen/hydrocarbon fuel blends exhibits three distinct behaviors. Additionally, the laminar flame speed of hydrogen/hydrocarbon fuel blends is found to exhibit three behavior regimes. Furthermore, the flame front instability behavior is influenced by the hydrogen addition through the combined effect of body force, the hydrodynamic effect and the thermal-diffusion effect.