小分子燃料对RP-3航空煤油燃烧作用的数值研究

推进技术 ›› 2018, Vol. 39 ›› Issue (8): 1863-1872.

小分子燃料对RP-3航空煤油燃烧作用的数值研究

李树豪^1,2,席双惠³,张丽娜¹,王毅¹,赵辉¹,侯军兴⁴

郑州航空工业管理学院航空工程学院，河南郑州 450046; 航空经济发展河南省协同创新中心，河南郑州 450046,四川大学原子与分子物理研究所，四川成都 610065,郑州航空工业管理学院航空工程学院，河南郑州 450046,郑州航空工业管理学院航空工程学院，河南郑州 450046,郑州航空工业管理学院航空工程学院，河南郑州 450046,郑州航空工业管理学院机电工程学院，河南郑州 450046

发布日期:2021-08-15

Numerical Investigation for Effects of Small Molecule Fuels Additive on RP-3 Aviation Kerosene Combustion

School of Aeronautical Engineering，Zhengzhou University of Aeronautics，Zhengzhou 450046，China;Collaborative Innovation Center for Aviation Economy Development，Zhengzhou 450046，China,Institute of Atomic and Molecular Physics，Sichuan University，Chengdu 610065，China,School of Aeronautical Engineering，Zhengzhou University of Aeronautics，Zhengzhou 450046，China,School of Aeronautical Engineering，Zhengzhou University of Aeronautics，Zhengzhou 450046，China,School of Aeronautical Engineering，Zhengzhou University of Aeronautics，Zhengzhou 450046，China and School of Mechatronics Engineering，Zhengzhou University of Aeronautics，Zhengzhou 450046，China

Published:2021-08-15

摘要/Abstract

摘要： 为研究小分子燃料对RP-3航空煤油燃烧的影响，选择合理的RP-3航空煤油替代燃料详细燃烧模型开展工作，该模型能够精确预测RP-3航空煤油和小分子燃料的燃烧特性。以六种重要的小分子燃料H2，CH4，C2H4，C2H6，C3H6和C3H8分别与RP-3航空煤油按1 : 5的比例(摩尔分数)掺混形成的六种混合燃料(Blended Fuel)为研究对象。在当量比为1.0，压力分别为0.1 MPa和1 MPa下系统模拟了RP-3航空煤油及六种混合燃料在高温下的燃烧特性，分析了各种混合燃料的自点火、燃尽时间、绝热火焰温度、熄火温度、组分浓度变化，并结合ROP(Rate of Production)分析方法，分析了小分子燃料对OH自由基生成速率的影响。结果表明，C2H4将RP-3航空煤油的点火延迟时间缩短了近4.6 %；C3H6则将RP-3航空煤油的点火延迟时间推后了8.4 %；C2H4和H2对RP-3航空煤油的快速点火和稳定燃烧有着积极的作用，其中C2H4的作用最为突出。

关键词: RP-3航空煤油；混合燃料；自点火；火焰温度；熄火；ROP分析

Abstract: In order to investigate the effects of small molecule fuels on combustion characteristics of RP-3 aviation kerosene， detailed combustion models of RP-3 aviation kerosene alternative fuels was chosen and confirmed， and the models can accurately predict the combustion characteristics of RP-3 aviation kerosene and small molecule fuels. The objects of study are six kinds of blended fuels， which are formed by mixing six important fuels H2， CH4， C2H4， C2H6， C3H6 and C3H8 respectively with RP-3 aviation kerosene according to the proportion of 1:5 (molar ratio). The changes of auto ignition， burnout time， adiabatic flame temperature， extinction temperature and species concentration of each blended fuel are analyzed under the parameters of equivalent ratio 1.0， pressure 0.1MPa and 1MPa. The influence of small molecule fuels on the rate of OH radicals generated is also discussed by means of ROP analysis method. Results indicate that C2H4 can shorten ignition delay time of RP-3 aviation kerosene by nearly 4.6%， while C3H6 will postpone the time by 8.4% and， moreover， C2H4 and H2 have a positive effect on the fast ignition and stable combustion of RP-3 aviation kerosene and the former plays a prominent role.

Key words: RP-3 aviation kerosene；Blended fuel；Auto ignition；Flame temperature；Extinction；ROP analysis

李树豪,席双惠,张丽娜,王毅,赵辉,侯军兴. 小分子燃料对RP-3航空煤油燃烧作用的数值研究[J]. 推进技术, 2018, 39(8): 1863-1872.

LI Shu-hao^1,2,XI Shuang-hui³,ZHANG Li-na¹,WANG Yi¹,ZHAO Hui¹,HOU Jun-xing⁴. Numerical Investigation for Effects of Small Molecule Fuels Additive on RP-3 Aviation Kerosene Combustion[J]. Journal of Propulsion Technology, 2018, 39(8): 1863-1872.

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