固体燃料超燃冲压发动机燃烧室中火焰稳定性数值研究

推进技术 ›› 2015, Vol. 36 ›› Issue (10): 1495-1503.

固体燃料超燃冲压发动机燃烧室中火焰稳定性数值研究

迟鸿伟,魏志军,王利和,李彪,王宁飞

北京理工大学宇航学院，北京 100081,北京理工大学宇航学院，北京 100081,北京理工大学宇航学院，北京 100081,北京理工大学宇航学院，北京 100081,北京理工大学宇航学院，北京 100081

发布日期:2021-08-15
作者简介:迟鸿伟(1986—)，男，博士生，研究领域为固体燃料超燃冲压发动机内流场。
基金资助:
国家自然科学基金(51276020)。

Numerical Investigation of Combustion Flammability Characteristics in Solid Fuel Scramjet Combustor

School of Aerospace Engineering，Beijing Institute of Technology，Beijing 100081，China,School of Aerospace Engineering，Beijing Institute of Technology，Beijing 100081，China,School of Aerospace Engineering，Beijing Institute of Technology，Beijing 100081，China,School of Aerospace Engineering，Beijing Institute of Technology，Beijing 100081，China and School of Aerospace Engineering，Beijing Institute of Technology，Beijing 100081，China

Published:2021-08-15

摘要/Abstract

摘要： 对固体燃料超燃冲压发动机燃烧室中PMMA的燃烧过程进行了基于动网格技术的非稳态数值仿真研究。基于超声速流中的耦合传热及质量注入建立了固体燃料燃烧的数值模型，研究了燃烧室构型和进气总温对固体燃料燃烧特性的影响。结果表明:和实验数据对比证实了本文数值模型的正确性。固体燃料超燃冲压发动机能够实现自点火建压和维持燃烧。在燃烧过程中，装药壁面燃速分布不均匀，凹腔逐渐变得扁平。随着主流流速增加和通道的扩大，凹腔的火焰稳定能力降低，直至熄火。初始凹腔较深、进气总温较高时有利于稳定火焰。当进气总温提升400K时，工作时间和燃料消耗量提高1.8倍。

关键词: 固体燃料；超声速燃烧；冲压发动机；数值模拟；火焰稳定

Abstract: The unsteady combustion of polymethylmethacrylate in solid fuel scramjet (SFSCRJ) combustor has been simulated numerically based on dynamic grid technology. A solid fuel combustion numerical model is established based on coupling of heat transfer and mass injection in supersonic flow. The effects of combustor shape and inlet total temperature on combustion characteristics of PMMA have been studied. The results show that the numerical model is proved to be effective by comparing with the measured values. Self-ignition pressurization and sustained combustion could be permitted in SFSCRJ combustor. During the process of combustion，the cavity becomes more and more narrow due to the uneven distribution of regression rate of fuel grain. The flame-holding capability reduces with the increase of the main flow velocity and the broaden of fuel port leading to the occurrence of flameout. A relatively deep cavity and relatively high inlet total temperature are helpful to sustain combustion. Both the working time and fuel consumption increase by 1.8 times when inlet total temperature increases by 400K.

Key words: Solid fuel；Supersonic combustion；Ramjet；Numerical simulation；Flammability

迟鸿伟,魏志军,王利和,李彪,王宁飞. 固体燃料超燃冲压发动机燃烧室中火焰稳定性数值研究[J]. 推进技术, 2015, 36(10): 1495-1503.

CHI Hong-wei,WEI Zhi-jun,WANG Li-he,LI Biao,WANG Ning-fei. Numerical Investigation of Combustion Flammability Characteristics in Solid Fuel Scramjet Combustor[J]. Journal of Propulsion Technology, 2015, 36(10): 1495-1503.

参考文献

[1] 赵庆华, 刘建全, 王莉莉, 等. 固体燃料的超声速燃烧研究进展[J]. 飞航导弹, 2009, 10: 59-63.
[2] Adela Ben-Yakar, Ronald K Hanson. Cavity Flame-Holders for Ignition and Flame Stabilization in Scramjets: an Overview[J]. Journal of Propulsion and Power, 2001, 17(4): 869-877.
[3] Witt M A. Investigation into the Feasibility of Using Solid Fuel Ramjets for High Supersonic/Low Hypersonic Tactical Missiles[D]. USA: Naval Postgradate School, 1989.
[4] Angus W J. An Investigation into the Performance Characteristics of a Solid Fuel Scramjet Propulsion Device[D]. USA: Naval Postgraduate School, 1989.
[5] Adela Ben-Yakar, Alon Gany. Experimental Study of a Solid Fuel Scramjet[R]. AIAA 94-2815.
[6] Abraham Cohen, Benveniste Natan. Experimental Investigation of a Supersonic Combustion Solid Fuel Ramjet[R]. AIAA 97-3237.
[7] Shimon Saraf, Alon Gany. Testing Metallized Solid Fuel Scramjet Combustor[R]. ISABE 2007-1176.
[8] 杨向明, 刘伟凯, 陈林泉, 等. 固体燃料超燃冲压发动机原理性试验研究[J]. 固体火箭技术, 2012, 35(3): 19-324.
[9] Jarymowycz T A, Yang V, Kuo K K. Numerical Study of Solid-Fuel Combustion under Supersonic Crossflows[J]. Journal of Propulsion and Power,1992,8(2): 346-353.
[10] Rachel Ben-Arosh, Benveniste Natan. Theoretical Study of a Solid Fuel Scramjet Combustor[J]. Acta Astronautica, 1999, 45(3): 155-166.
[11] 杨明, 孙波. 固体燃料超燃冲压发动机燃烧室的数值仿真[J]. 兵工自动化, 2012, 31(1): 37-41.
[12] 刘伟凯, 陈林泉, 杨向明. 固体燃料超燃冲压发动机燃烧室掺混燃烧数值研究[J]. 固体火箭技术, 2012, 35(4): 457-462.
[13] 杨明. 固体燃料超燃冲压发动机内流场研究[D].南京:南京理工大学, 2012.
[14] Xinyan Pei, Zhiwen Wu, Zhijun Wei, et al. Numerical Investigation on Cavity Length for Solid Fuel Scramjet[R]. AIAA 2012-3830.
[15] Huan Tao, Zhijun Wei. Numerical Investigation on the Effects of Cavity in Solid Fuel Scramjet[R]. AIAA 2013-3974.
[16] Biao Li, Zhi-jun Wei, Hong-wei Chi. Numerical Analysis of Solid Fuel Scramjet Operating at Mach 4 to 6[R].AIAA 2013-3695.
[17] 迟鸿伟, 魏志军, 王利和, 等. 固体燃料超燃冲压发动机燃烧室中PMMA自点火性能数值研究[J]. 推进技术, 2014, 35(6): 799-808. (CHI Hong-wei, WEI Zhi-jun, WANG Li-he, et al. Numerical Investigation on Self-Ignition of PMMA in Solid Fuel Scramjet[J]. Journal of Propulsion Technology, 2014, 35(6): 799-808.)
[18] Schulte G. Fuel Regression and Flame Stabilization Studies of Solid-Fuel Ramjets[J]. Journal of Propulsion and Power, 1986, 2(4): 301-304.
[19] Elands R. Experimental and Computational Flammability Limits in a Solid Fuel Ramjet[R]. AIAA 90-1964.
[20] Amnon Netzer, Alon Gany. Burning and Flameholding Characteristics of a Miniature Solid Fuel Ramjet Combustor[J]. Journal of Propulsion and Power,1991,7(3): 357-363.
[21] 迟鸿伟, 魏志军, 李彪, 等. 超声速流中湍流模型性能的数值研究[EB/OL]. Http://www.cnki.net/kcms/detail/61.1234.TJ.20140328.1634.005.html, 2014-03-28.
[22] Rihani D N, Doraiswamy LK. Estimation of Heat Capacity of Organic Compounds from Group Contributions[J]. Industial & Engineering Chemistry Fundamentals, 1965, 4(1): 17-21.
[23] Carl L Yaws. Handbook of Transport Property Data-VisCosity, Thermal Conductivity, and Diffusion Coefficients of Liquids and Gases[M]. USA: Library of Physica-Chemical Property Data, 1995.
[24] Walters R N, Hackett S M, Lyon R E. Heats of Combustion of High Temperature Polymers[J]. Fire and Materials, 2000, 24(5): 245-252.
[25] Berglund M, Fedina E, Fureby C, et al. Finite Rate Chemistry Large-Eddy Simulation of Self-Ignition in a Supersonic Combustion Ramjet[J].AIAA Journal, 2010,(3): 540-549.
[26] Seshadri K, Williams F A. Structure and Extinction of Counterflow Diffusion Flames above Condensed Fuels: Comparison Between Ploy(Methyl Methacrylate) and Its Liquid Monomer, Both Burning in Nitrogen-Air Mixtures[J]. Journal of Polymer Science: Ploymer Chemistry Edition, 1978, 16: 1755-1778.
[27] Magnussen B F, Hjertager B H. On Mathematical Models of Turbulent Combustion with Special Emphasis on Soot Formation and Combustion[R]. In 16th Symp.(Int'l.) on Combustion.The Combustion Institute, 1976.
[28] Tzung-Hang Tsai, Mao-Jeng Li, I-You Shih, et al. Experimental and Numerical Study of Auto-Ignition and Pilot Ignition of PMMA Plates in a Cone Calorimeter[J]. Combustion and Flame, 2001, 124(3): 466-480.
[29] Elands R, Dijkstra F, Zandbergen B. Experimental and Computational Flammability Limits in a Solid Fuel Ramjet[R]. AIAA 90-1964.
[30] Gokulakrishnan P, Pal S, Klassen M S, et al. Supersonic Combustion Simulation of Cavity-Stabilized Hydrocarbon Flames Using Ethylene Reduced Kinetic Mechanism[R]. AIAA 2006-5092.　　　　　　　　　　　　　*　收稿日期:2014-06-23；修订日期:2014-09-02。基金项目:国家自然科学基金(51276020)。作者简介:迟鸿伟(1986—),男,博士生,研究领域为固体燃料超燃冲压发动机内流场。E-mail: zblchw@163.com(编辑:史亚红)