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In this study, the cold and hot processes at different incident angles of the micro-burner are numerically simulated, and the flow field, concentration field and temperature field in the burner are analysed. The mixing effect of cold H 2  and air streams is the worst when the angle is 15°, and the best while the angle is 75°.When considering the combustion process, the velocity distribution of air and H 2  is similar to the cold state. The combustion temperature rises first, and the average temperature rise rate gradient of the section is the largest while the angle is 15°. The section temperature reaches the maximum in the length of 15mm. When the space of the micro-burner is sufficient, the angle has little effect on the combustion process. In the vicinity of the entrance section, different angles of incidence have a greater impact on the position of the fire in the burner and the violent reaction zone.

Research on Gas Mixing Characteristics and Combustion Performance of Micro Burner with Different Channel Angle