Corrigendum to “Optimizing iron powder combustion: Influence of particle size on flame stability, nanoparticle formation, and nitric oxide emission” (Combustion and Flame (2025) 275, (S0010218025001063), (10.1016/j.combustflame.2025.114068))

The authors regret that the values of thermal diffusivity α and discreteness parameter τ_c in Table 6 of the original publication were incorrect. These have been corrected in the revised version of Table 6, followed by a one-paragraph discussion below the table. The authors would like to apologise for any inconvenience caused. The estimation results in Table 6 indicate that τ_c ≫ 1, suggesting that the flame mode under all experimental conditions is characterized as continuous. Furthermore, the injected particles in the burner can burn simultaneously. This is because the surrounding gas temperature, preheated to 810 °C, is sufficiently high to ignite the particles. However, bigger particles make continuous propagation more difficult, with one of the reasons being their shorter residence time, as discussed earlier. As a result, this parameter varies with others, which may lead to different flame propagation behavior. Thus, while the mode is a critical parameter in stabilizing the iron flame within a practical burner, other factors such as fluid dynamics and preheating within the burner also play significant roles. The swirling flow applied in this study effectively stabilizes the iron flame.