定常冷炎における金属壁面の化学的干渉効果

抄録

Wall chemical effects on wall-stabilized cool flames have been studied experimentally. The DME/O₂ cool flame was stabilized through impingement of the mixture onto a heated wall at 700 K. By depositing a thin film of the target wall material on the wall surface, a distinct chemical boundary condition was imposed with preserving the same thermal boundary. The cool flame on the Ni surface shows a significant decease in both of the HCHO/CO concentration and flame temperature, compared with the cool flame formed on the SiO₂ surface. These results suggest interference in the low-temperature oxidation process by the surface reaction, showing significant wall chemical effects on the cool flame.