“…Tuttle et al [11,12] however examined the unsteady characteristics of the impingement heat transfer. Lately, research has been performed by Dong et al [13,14] and Kwok et al [15,16] concerning the heat transfer characteristics of single and multiple impinging flame jets and slot and round impinging flame jets. Zhao et al [17] found that the thermal conductivity of the impingement plate provides the major influence on the heat transfer from the flame jet to the plate.…”