等离子体增强含硼燃气二次燃烧实验分析
收稿日期: 2015-09-13
修回日期: 2015-10-25
网络出版日期: 2016-01-30
基金资助
国家自然科学基金（11372356）
Experimental analysis on plasma assisted secondary combustion of boron-based gas
Received date: 2015-09-13
Revised date: 2015-10-25
Online published: 2016-01-30
Supported by
National Natural Science Foundation of China (11372356)
为研究等离子体助燃条件下含硼燃气在补燃室的二次燃烧特性，建立了排除来流空气掺混效应的扩散燃烧实验模型。利用高速摄影仪拍摄了含硼燃气在补燃室的火焰照片，得到了有无等离子体条件下的燃烧火焰形貌；测量了补燃室不同截面的静压和总压，分析了有无等离子体条件下含硼推进剂在固冲发动机中的燃烧效率。实验结果表明：在含硼燃气二次燃烧过程中加入等离子体炬，等离子体炬后方区域火焰更加明亮，硼燃烧更加充分；断开等离子体炬后，补燃室静压和总压出现压力突降台阶，说明加入等离子体后可以加快化学反应速率，提高含硼燃气在固冲发动机中的燃烧效率，从而提高了补燃室的压强；且放电功率越高，含硼燃气在固冲发动机中燃烧效率的增长率越高。
张鹏 , 洪延姬 , 丁小雨 , 纪海龙 . 等离子体增强含硼燃气二次燃烧实验分析[J]. 航空学报, 2016 , 37(9) : 2721 -2728 . DOI: 10.7527/S1000-6893.2015.0350
In order to research the influence of plasma on the secondary combustion characteristic of boron-based gas in the afterburning chamber, a diffusion combustion experimental model which can exclude the mixing effect of intake air on the boron-based gas is designed and built. The flame image of boron-based gas secondary combustion is measured by the high-speed photographic apparatus to analyze the degree of brightness of the flame and the flame shape; the total pressure and static pressure of different cross-sections in the combustion chamber are measured to analyze the combustion efficiency of boron-based propellant under the influence of plasma. The results show that when adding plasma torch at the secondary combustion of boron-based gas, the combustion efficiency of boron-based gas increases and the boron-based flame is brighter; the abrupt decrease in the total pressure and static pressure appears when turning the plasma torch off. These show that the chemical reaction rate of boron-based gas increases with plasma, and the combustion efficiency of boron-based propellant in the solid rocket ramjet increases with plasma, which leads to the increase of the total pressure and static pressure with plasma; the combustion efficiency increases with the growth of discharge plasma power.
Key words： plasma torches; ducted rocket engines; boron; afterburning chamber; diffusion flames
[1] BECKSTEAD M W, PUDUPPAKKAM K, THAKRE P, et al. Modeling of combustion and ignition of solid-propellant ingredients[J]. Progress in Energy and Combusiton Science, 2007, 33(6): 497-551.
[2] 于丹, 孔成栋, 卓建坤, 等. 硼颗粒着火阶段氧化性能研究[J]. 工程热物理学报, 2015, 36(4): 922-925. YU D, KONG C D, ZHUO J K, et al. Study on oxidation characteristics of boron particles in the ignition stage[J]. Journal of Engineering Thermophysics, 2015, 36(4): 922-925(in Chinese).
[3] FRY R S. A century of ramjet propulsion technology evolution[J]. Journal of Propulsion and Power, 2004, 20(1): 27-57.
[4] JAIN A, ANTHONYSAMY S, ANANTHASIVAN K, et al. Studies on the ignition behavior of boron powder[J]. Termochimica Acta, 2010, 500(1): 63-68.
[5] HELMUT K C, JOACHIM S, WALTER C, et al. Combustion of solid-fuel slabs containing boron particles in step combustor[J]. Journal of Propulsion and Power, 2003, 19(6): 1180-1191.
[6] 刘杰, 李进贤, 冯喜平, 等. 旋转射流对含硼固体火箭冲压发动机二次燃烧的影响[J]. 推进技术, 2011, 32(3): 355-359, 382. LIU J, LI J X, FENG X P, et al. Influence of the swirl injection for secondary combustion of boron based ducted rocket[J]. Journal of Propulsion Technology, 2011, 32(3): 355-359, 382(in Chinese).
[7] 胡建新. 含硼推进剂固体火箭冲压发动机补燃室工作过程研究[D]. 长沙: 国防科学技术大学, 2006. HU J X. Research on the secondary combustion chamber operation process of boron-based propellant ducted rockets[D]. Changsha: National University of Defense Technology, 2006 (in Chinese).
[8] BENVENISTE N, ALON G. Combustion characteristics of a boron-fueled solid fuel ramjet with aft-burner[J]. Journal of Propulsion and Power, 1993, 9(5): 694-701.
[9] FOMIN M V, ZVEGINTSEV I V, MAZHUL I I, et al. Analysis of efficiency of using hybrid propulsion for accelerating small-size rockets starting from the earth surface[J]. Journal of Applied Mechanics and Technical Physics, 2010, 51(6): 792-799.
[10] JU Y G. Recent progress and challenges in fundamental combustion research[J]. Advances in Mechanics, 2014, 44(1): 26-97.
[11] INOMATA T, OKAZAKI S, MORIWAKI T, et al. The application of silent electric discharges to propagating flames[J]. Combustion and Flame, 1983, 50(3): 361-363.
[12] STARIKOVSKAYA S M, KUKAEV E N, KUKSIN A Y. Analysis of the spatial uniformity of the combustion of a gaseous mixture initiated by a nanosecond discharge[J]. Combustion and Flame, 2004, 139(3): 177-187.
[13] SUN W, UDDI M, OMBRELLO T, et al. Effects of nonequilibrium plasma discharge on counterflow diffusion flame extinction[J]. Proceedings of the Combustion Institute, 2011, 33(2): 3211-3218.
[14] SUN W, OMBRELLO T, WON S H, et al. Direct ignition and S-curve transition by in situ nanosecond pulsed discharge in methane/oxygen/helium counterflow flame[J]. Proceedings of the Combustion Institute, 2013, 34(1): 847-855.
[15] ANDREY S, NICKOLAY A. Plasma-assisted ignition and combustion[J]. Progress in Energy and Combustion Science, 2013, 39(1): 61-110.
[16] MATSUBARA Y, TAKITA K, MASUYA G. Combustion enhancement in a supersonic flow by simultaneous operation of DBD and plasma jet[J]. Proceeding of the Combustion Institute, 2013, 34(2): 3287-3294.
[17] ALEKSANDROV N L, KINDYSHEVA S V, KOCHETOV I V. Kinetics of low-temperature plasmas for plasma-assisted combustion and aerodynamics[J]. Plasma Science and Technology, 2014, 23(1): 1-13.
[18] 张鹏, 洪延姬, 沈双晏, 等. 等离子体强化点火的动力学分析[J]. 高电压技术, 2014, 40(7): 2125-2132. ZHANG P, HONG Y J, SHENG S Y, et al. Kinetic effects of plasma on the ignition process[J]. High Voltage Engineering[J], 2014, 40(7): 2125-2132(in Chinese).
[19] 兰宇丹. 燃烧室等离子体点火与助燃的实验研究与数值模拟[D]. 西安: 空军工程大学, 2011. LAN Y D. Experimental research and numerical simulation on chamber plasma assisted ignition and combustion[D]. Xi'an: Air Force Engineering University, 2011(in Chinese).
[20] 谢玉树, 张小兵, 袁亚雄, 等. 固体推进剂等离子体点火研究[J]. 推进技术, 2003, 24(3): 275-277. XIE Y S, ZHANG X B, YUAN Y X, et al. Experimental studies for plasmas ignition of solid propellants[J]. Journal of Propulsion Technology, 2003, 24(3): 275-277(in Chinese).
/
| 〈 |
|
〉 |
CJA