水含量对乙醇/RP-3混合燃料的燃烧特性的影响
Yu Liu1, Peng Wang1, Xiaoxiao Chen1
1Liaoning Key Lab of Advanced Test Technology for Aerospace Propulsion System, Shenyang Aerospace University, Liaoning, Shenyang 110136, P.R. China.
将水添加到乙醇/RP-3燃料中可以降低层层燃烧速度 (LBV),但可以提高燃烧稳定性. 这项研究研究了水含量对燃料燃烧特性的影响.
科学领域:
- 燃烧科学是一种科学.
- 化学动力学 化学动力学
- 热力学是一种热力学.
背景情况:
- 水性乙醇和RP-3是热力学机械的潜在替代燃料.
- 了解燃料混合物的燃烧特性对于高效和稳定的发动机运行至关重要.
- 燃料中的水含量可以显著改变燃烧行为.
研究的目的:
- 为了研究含水乙醇中的水含量对含水乙醇/RP-3混合燃料的层状燃烧速度 (LBV) 和马克斯坦长度 (Lb) 的影响.
- 分析影响这些燃烧参数的动力机制.
- 评估水对燃料混合物的燃烧稳定性的影响.
主要方法:
- 实验使用恒定体积室 (CVC) 进行.
- 在恒定的初始温度 (450 K),初始压力 (0.1 MPa) 和等效比率 (0.8-1.4) 进行LBV和LB的测量.
- 化学反应的动力分析被用来理解潜在的机制.
主要成果:
- 水性乙醇中含水量增加导致水性乙醇/RP-3混合物的LBV下降.
- 较高的水比导致CH3和CH2基的产生减少,这是由于OH基在关键反应中的参与增加.
- 随着含水量增加,H,O和OH基的度下降,抑制了LBV.
- 燃料混合物的马克斯坦长度 (Lb) 随着含水量增加而增加,这表明燃烧稳定性得到改善.
结论:
- 水性乙醇中的水含量会对层状燃烧速度产生负面影响,但会对燃烧稳定性产生积极影响.
- 观察到的激素度的变化为了解水所影响的动态路径提供了洞察力.
- 这些发现为在热力学机械中使用生物乙醇混合物提供了理论和技术支持.
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