中文摘要：

本文利用双腔泄压式定压燃烧弹，研究了高压下典型IGCC合成气的层流火焰传播特性，得到了不同压力（O．1～1MPa）和不同当量比下（O．6～3．0）合成气的层流火焰传播速度和Markstein长度。实验结果表明，层流火焰传播速度随当量比先增加后减少，随压力的增加而减小。Davis和Sun机理能较好地预测高压下合成气层流火焰的传播速度。Markstein长度随当量比的增加而增加，随压力的增加而减小。

英文摘要：

This paper presented experimental investigation on effects of pressure on laminar flame speed and Markstein length of typical syngas in a recently developed dual-chambered, pressure-release type high-pressure combustion apparatus. The results show that the laminar flame speed of syngas firstly increases with the equivalence and then begins to decrease with further increasing equivalence ratio. It decreases with the increase of pressure. The laminar flame speed predicted by Davis and Sun mechanisms was in agreement with the experimental results at elevated pressures. Markstein length increases with equivalence ratio and decreases with the increase of ~ressure.