“…The canonical lifted jet flame has different stabilisation mechanisms, which include premixed flame propagation [47], flame quenching due to high scalar dissipation rates [48], edge flame phenomena [49] and neighbouring large-scale eddies supplying hot products to the edges of the jet [50]. When the fuel jet is diluted with air for a given jet velocity (reducing the global equivalence ratio), the mean flame base is located further downstream [51,52]. For the configuration studied here, the mean flame lift-off height is similar even when the global equivalence ratio is…”