Design and experimental investigation of ejector based on high temperature gas ejection
-
摘要: 结合气体热力学理论和等压引射器设计理论方法,提出了高温燃气热力学参数计算方法,研制了基于高温燃气引射的超声速引射器试验平台。通过引射器与燃气发生器的对接实验,研究了零引射和被引射气流引射两种状态下的工作性能以及引射气流温度变化对工作性能的影响。实验结果表明:被引射气流流量360 g/s时,入口总压达到3.89 kPa,优于设计指标4 kPa;引射气流温度在低于设计值100 K范围内的变化对引射器的工作性能不会造成影响。实验验证了基于高温燃气引射的超声速引射器性能计算分析与工程设计方法的可靠性,相关研究结果为燃气发生器参数优化提供了指导性建议。Abstract: Combining the gas thermodynamics with the isobaric ejector design theory, the calculation method of thermodynamic parameters of high temperature gas is presented, and the ejector design scheme based on the high temperature gas ejection is proposed. Through the docking experiment between the ejector and the gas generator, the working performance of zero injection and secondary flow are studied, and the influence of temperature change of ejected gas flow on the working performance are also studied. The experimental results show that the total inlet pressure can reach 3.89 kPa with the secondary flow at 360 g/s, and the variation of the ejector gas temperature within 100 K below the design point has no effect on the ejector performance, which verifies the reliability of performance calculation analysis and engineering design method of the supersonic ejector based on high temperature gas injection, and the relevant research results provide guidance suggestions for parameter optimization of the gas generator.
-
Keywords:
- supersonic /
- ejector /
- gas generator /
- zero ejection /
- secondary flow
-
-
表 1 引射器设计参数
Table 1 Design parameters of the ejector
引射马赫数Ma 引射气流总压pt1/MPa 引射流量g/(kg·s-1) 引射气流总温Tt1/K 引射系数k 一级引射器 5.0 2.41 0.62 800 0.581 二级引射器 3.9 2.83 2.61 900 0.375 表 2 实验结果与设计值对比
Table 2 Comparison of experimental results and design values
一级引射器 二级引射器 被引射气流压力pt2/kPa 总引射系数ktotal 总增压比εtotal 引射压力pt1/MPa 引射温度Tt1/K 引射压力pt1/MPa 引射温度Tt1/K 设计值 2.41 800 2.83 900 4.00 0.111 25.00 实验值 2.38 790 2.87 910 3.89 0.110 24.94 表 3 燃气发生器实验结果
Table 3 Experimental results of the gas generator
空气流量mair/(kg·s-1) 酒精流量malc/(g·s-1) 空燃比AF 燃气温度T/K 设计值 23.2 800 29.0 1100 实验值 23.5 776 30.3 1080 表 4 不同引射气流温度的实验结果
Table 4 Experimental results of different ejection flow temperatures
空气供应压力pair /MPa 酒精喷前压力pj /MPa 一级集气室温度T1/K 二级集气室温度T2/K 引射气流总压pt1/kPa 4.5 6.5 697 806 3.90 4.5 7.0 710 834 3.89 4.2 8.0 790 910 3.89 4.0 8.0 808 946 3.90 -
[1] 廖达雄.气体引射器原理及设计[M].北京:国防工业出版社, 2018. [2] 桑凤亭, 金玉奇, 房本杰.氧碘化学激光[M].北京:国防工业出版社, 2015. SANG F T, JIN Y Q, FANG B J. Chemical oxygen-iodine lasers[M]. Beijing:National Defense Industry Press, 2015.
[3] BOUDREAU A H. Hypersonic air-breathing propulsion efforts in the Air Force Research Laboratory[R]. AIAA-2005-3255, 2005.
[4] 廖达雄, 任泽斌, 余永生, 等.等压混合引射器设计与实验研究[J].强激光与粒子束, 2006, 18(5):728-732. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=qjgylzs200605007 LIAO D X, REN Z B, YU Y S, etc. Design and experiment of constant pressure mixing ejector[J]. High Power Laser and Particle Beams, 2006, 18(5):728-732. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=qjgylzs200605007
[5] 陈志强, 廖达雄, 刘宗政, 等.过氧化氢加酒精补燃气体发生器实验研究[J].强激光与粒子束, 2007, 19(9):1409-1412. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=qjgylzs200709001 CHEN Z Q, LIAO D X, LIU Z Z, et al. Experimental studies of gas generator based on hydrogen peroxide and hypergolic ethanol[J]. High Power Laser and Particle Beams, 2007, 19(9):1409-1412. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=qjgylzs200709001
[6] 刘化勇.超声速引射器的数值模拟方法及其引射特性研究[D].绵阳: 中国空气动力研究与发展中心, 2009. LIU H Y.Development of numerical method and investigation on performances of supersonic ejectors[D]. Mianyang: China Aerodynamics Research and Development Center, 2009.
[7] 徐万武.高性能、大压缩比化学激光器压力恢复系统研究[D].长沙: 国防科学技术大学, 2003. XU W W. Study of high performance, high compression-ratio pressure recovery system for chemical laser[D]. Changsha: National University of Defense Technology, 2003.
[8] 徐万武, 邹建军, 王振国, 等.超声速环型引射器启动特性试验研究[J].火箭推进, 2005, 31(6):7-11. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hjtj200506002 XU W W, ZOU J J, WANG Z G, et al. Experimental investigation of the start performances of the supersonic annular ejector[J]. Journal of Rocket Propulsion, 2005, 31(6):7-11. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=hjtj200506002
[9] 徐万武, 谭建国, 王振国.高空模拟试车台超声速引射器数值研究[J].固体火箭技术, 2003, 26(2):71-74. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gthjjs200302020 XU W W, TAN J G, WANG Z G. Numerical study on supersonic ejector of simulated altitude test stand[J]. Journal of Solid Rocket Technology, 2003, 26(2):71-74. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gthjjs200302020
[10] 吴继平.高增压比多喷管超声速引射器设计理论、方法与实验研究[D].长沙: 国防科学技术大学, 2007. WU J P.Design theory, method and experimental investigation of high compression ratio multi-nozzle supersonic ejector[D]. Changsha: National University of Defense Technology, 2007.
[11] 吴继平, 陈健, 王振国.多喷嘴超声速引射器压力匹配性能试验研究[J].国防科技大学学报, 2007, 29(5):5-9. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gfkjdxxb200705002 WU J P, CHEN J, WANG Z G. Experimental investigation on pressure matching of multi-nozzle supersonic ejector[J]. Journal of National University of Defense Technology, 2007, 29(5):5-9. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gfkjdxxb200705002
[12] 陈健.多喷嘴超声速引射器数值仿真与试验研究[D].长沙: 国防科学技术大学, 2006. CHEN J. Numerical simulation and experiment investigation of multi-nozzle supersonic ejector[D]. Changsha: National University of Defense Technology, 2006.
[13] 邹建军, 周进, 徐万武, 等.大压缩比两级燃气引射系统参数匹配试验研究[J].强激光与粒子束, 2008, 20(10):1589-1592. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=qjgylzs200810002 ZOU J J, ZHOU J, XU W W, et al. Experimental investigation on parameter matching of high compression-ratio two-stage gas ejector system[J]. High Power Laser and Particle Beams, 2008, 20(10):1589-1592. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=qjgylzs200810002
[14] 邱义芬, 王俊清, 袁修干, 等.多喷嘴引射器性能计算模型[J].北京航空航天大学学报, 1997, 23(5):621-626. QIU Y F, WANG J Q, YUAN X G, et al. Multiple nozzle ejector performance calculation model[J]. Journal of Beijing University of Aeronautics and Astronautics, 1997, 23(5):621-626.
[15] 张鲲鹏, 薛飞, 潘卫明, 等.高压气体引射器的试验研究和仿真[J].热科学与技术, 2004, 3(2): 133-138. ZHANG K P, XUE F, PAN W M, et al. Experimental investigation and numerical simulation of high-pressure gas ejector[J]. 2004, 3(2): 133-138.
[16] 汪吉军.喷嘴对喷射器性能影响的数值分析[D].沈阳: 东北大学, 2014. WANG J J. Numerical analysis of the effect of the nozzle on the ejector performance[D]. Shenyang: Northeastern University, 2014.
[17] SHWARTZ J, WILSON G T, AVIDOR J M. Tactical high energy laser[J]. Proceedings of SPIE, 2002, 4632(1):10-20.
[18] ROGERS R C, CAPRIOTTI D P, GUY R W. Experimental supersonic combustion research at NASA Langley[R]. AIAA 98-2506.1998.
[19] 廉乐明, 谭羽非, 吴家正, 等.工程热力学[M].第5版.北京:中国建筑工业出版社, 2007. [20] 赵芳, 任泽斌, 李先锋, 等.空气/酒精燃气发生器试验研究[J].工程热物理学报, 2019, 40(9):2190-2197. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gcrwlxb201909035 ZHAO F, REN Z B, LI X F, et al. Experimental study of air/ethanol gas generator[J]. Journal of Engineering Thermophy-sics, 2019, 40(9):2190-2197. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gcrwlxb201909035