Effect of equivalence ratio on the velocity of rotating detonation
Effect of equivalence ratio on the velocity of rotating detonation
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DOI：
10.1016/j.ijhydene.2015.04.072
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发表时间：
2015-07
影响因子：
7.2
通讯作者：
Yuhui Wang;Jian-ping Wang
中科院分区：
文献类型：
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作者：
Yuhui Wang;Jian-ping Wang
旋转爆震发动机具有热效率高、比冲大、结构简单等优点，正受到广泛的研究。对氢氧混合气中的旋转爆轰波进行了实验和数值研究。实验中，在燃烧室不同位置安装了两个压力传感器，采集爆震压力信号。用气体质量流量控制器测量质量流量，得到了不同当量比下的旋转爆轰波。实验和数值计算结果均表明，随着当量比的增大，旋转爆轰波的速度先增大后减小，而爆轰波的速度则单调减小。
Rotating detonation engines having the advantages of high thermal efficiency, high specific impulse and simple structure, are being studied widely. Rotating detonation waves in hydrogen–oxygen mixture are experimentally and numerically studied here. Two pressure sensors at different positions in the combustor capture the detonation pressure signals in the experiments. Mass flow rates are measured by gas mass flow controllers and rotating detonation waves at different equivalence ratios are obtained. Both experimental and numerical results show that as the equivalence ratio increases, the velocity of the rotating detonation wave first increases and then decreases while the velocity of the detonation wave decreases monotonously according to the previous study.