Stabilization mechanisms of an ammonia/methane non-premixed jet flame up to liftoff

Ammonia is a promising alternative fuel for CO2 emission mitigation. The use of ammonia blends allows more flexibility compared to pure and often considered immediate reduction in existing facilities running on natural gas. However, fundamental studies these mixtures remain scarce. This study thus focuses ammonia/methane blend fuels. effect methane jet flame stabilization investigated using non-premixed configuration observe the mechanisms, flame-burner interactions how addition affects attached up liftoff. tip position was observed CH* chemiluminescence. Heat transfer burner monitored by temperature measurement at lip inside impact thermal interactions. main regimes described are still case addition. transition between those appeared be shifted toward larger velocities relative due Those changes could related change mixture combustion properties which both position, heat turn identified regimes. dynamic leading liftoff further analyzed highlight perturbated balance