本文通过实验与数值模拟方法，研究了射流速度对狭缝微预混纯氢燃烧器燃烧性能的影响。在当量比为0.35的条件下，系统分析了射流速度在30~70 m/s范围内变化时燃烧器的火焰结构、压力振荡特性、温度分布及污染物排放等关键参数。结果表明:随着射流速度增大，火焰长度增加，OH*分布范围扩展，火焰稳定性提高；低速工况下存在明显的压力振荡现象，高速时振荡减弱甚至消失；排气温度随流速增大而升高，NOx排放保持在较低水平（3~5 ppm）。此外，数值模拟揭示了流场非对称性增强、射流干涉加剧等现象。研究为氢燃料微预混燃烧器的优化设计提供了重要依据。

This paper investigates the effect of jet velocity on the combustion performance of a slit micro-premixed pure hydrogen combustor through experimental and numerical methods. Under a fixed equivalence ratio of 0.35, key parameters such as flame structure, pressure oscillation characteristics, temperature distribution, and pollutant emissions were systematically analyzed within a jet velocity range of 30~70 m/s. Results show that as the jet velocity increases, the flame length extends, the OH* distribution expands, and flame stability improves. Pressure oscillations are prominent at low velocities but diminish or disappear at high velocities. The exhaust temperature rises with increasing flow velocity, while NOx emissions remain at a low level (3~5 ppm). Numerical simulations further reveal enhanced flow asymmetry and intensified jet interaction at higher velocities. This study provides valuable insights for the optimal design of hydrogen-fueled micro-premixed combustors.