使用不同的H_2/O_2化学反应机理和NO_x化学反应机理模拟了平面对冲火焰。通过和实验数据比较确定了最优的化学反应机理。使用该化学反应机理模拟了管形对冲火焰。通过对比平面拉伸火焰和管形拉伸火焰,突出了火焰曲率对H_2扩散火焰温度和NO排放的影响。分析显示正曲率提高火焰温度,负曲率降低火焰温度,由于NO生成对温度的敏感性,正曲率火焰的NO排放明显高于平面火焰,反之,负曲率火焰的NO排放大大低于平面火焰。 The H 2 O 2 chemical reaction mechanism and the NO_x chemical reaction mechanism were used to simulate planar hedge flames. The optimal chemical reaction mechanism was confirmed by comparison with the experimental data. The chemical reaction mechanism was used to simulate a tubular hedge flame. The effects of flame curvature on the temperature of H 2 diffusion flame and the NO emission were highlighted by comparing the plane-extended flame and the tube-shaped drawing flame. The analysis shows that the positive curvature increases the temperature of the flame and the negative curvature decreases the temperature of the flame. Due to the sensitivity of NO generation to temperature, the NO emission of the positive curvature flame is obviously higher than that of the planar flame. On the contrary, the NO emission of the negative curvature flame is much lower than that of the plane flame.