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开发和验证小型机制的RP-3航空燃料高精度的发展和验证

Shuanghui Xi¹, Junxing Hou¹, Shuai Yang¹

¹School of Aerospace Engineering, Zhengzhou University of Aeronautics, Zhengzhou 450046, P. R. China.

|August 21, 2023

概括

一种新的,更小的航空煤油化学动力机制是使用代用燃料开发出来的. 这种经过验证的模型准确地预测了点火和火焰速度,使发动机应用的计算流体动力学模拟成为可能.

科学领域:

化学动力学化学动力学
燃烧科学是一种科学.
航空燃料研究航空燃料研究

背景情况:

航空煤油燃烧是复杂的,需要准确的化学动力模型.
现有的模型可以在计算上昂贵,需要进行详细的模拟.

研究的目的:

为煤油替代燃料开发一个缩小尺寸的化学动力机制.
通过实验数据验证机制的性能.
为了实现航空发动机应用的计算流体动力学 (CFD) 模拟.

主要方法:

使用n-多德干,1,3,5-三甲基环素和n-烯制备了一种煤油替代燃料.
通过结合核心和子机制,构建了一个43种,136个反应的化学动力机制.
使用点火延迟时间,层状火焰速度和喷气反应堆氧化数据验证了机制的性能.

主要成果:

开发的机制准确地预测了n-多德干和实用煤油的点火延迟时间和层状火焰速度.
在喷气反应堆中氧化过程中预测的物种度与RP-3煤油数据显示了可接受的一致性.
灵敏度分析证实了减少机制中的关键反应途径的保留.

结论:

已经成功开发和验证了一种计算效率高,用于煤油替代燃料的43种化学动力机制.
该机制的精度和缩小尺寸使其适合用于对发动机中的航空燃料燃烧的CFD模拟.
这项工作有助于进一步探索实际的航空燃料应用挑战.

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