Mixing characteristics of hyperburner with a lobed mixer
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摘要: 为了使涡轮基组合循环发动机超级燃烧室的涡扇涵道和冲压涵道两股气流具有高效低阻的掺混特性,设计了一种结构简单的方形波瓣混合器.用数值模拟方法对该方形波瓣混合器与常规混合器进行了比较分析,结果表明方形波瓣混合器具有与菊花型波瓣混合器相似的流向涡高效低阻掺混特性.进行混合器结构参数变化对掺混特性的影响研究发现扩张角对方形波瓣混合器的热混合效率的影响起主要作用,而出口高度的影响不大;当方形波瓣混合器的波长比为1.0时,方形波瓣混合器具有高效低阻的掺混特性.Abstract: A simple structure square lobed mixer with high mixing efficiency and low resistance was designed to turbofan by pass flow with ram bypass flow thoroughly in turbine based combined cycle engine hyperburner. Numerical simulation of square lobed mixer and comparative analysis with conventional mixer were made; the results indicate that square lobed mixer with high mixing efficiency and low resistance of the streamwise vortices of daisy lobed mixer. Numerical simulation results of various mixer structure parameters' influence on mixing characteristics show that expansion angle dominates the thermal mixing efficiency, and the export height of the mixer has little effect on it. The square lobed mixer has the characteristics of high mixing efficiency and low resistance when the wavelength ratio is 1.0.
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[1] 刘大响,金捷.21世纪世界航空动力技术发展趋势与展望[J].中国工程科学,2004,6(9):1-8. LIU Daxiang,JIN Jie.The development trends and prospect of world aeroprolulsion technology in the 21st century[J].Engineering Science,2004,6(9):1-8.(in Chinese) [2] Lee J,Winslow R,Buehrle R L.The GE-NASA RTA hyperburner design and development[R].NASA/TM 2005-213803,2005. [3] Saunders J D,Stueber T J,Thomas S R,et al.Testing of the NASA hypersonics project's combined cycle engine large scale inlet mode transition experiment (CCELIMX)[R].NASA/TM-2012-217217,2012. [4] Bridges J,Wernet M P.Cross-stream PIV measurements of jets with internal lobed mixers[R].AIAA-2004-2896,2004. [5] McCormick D C,Bennett J C,Jr.Vortical and turbulent structure of a lobed mixer free shear layer[J].AIAA Journal,1999,37(9):1852-1859. [6] Cooper N J,Merati P.Numerical simulation of the vortical structures in a lobed jet mixing flow[R].AIAA-2005-635,2005. [7] LIU Youhong.Experimental and numerical investigation of circularly lobed nozzle with/without central plug[J].International Journal of Heat and Mass Transfer,2002,45(12):2577-2585. [8] 岳巍,雷志军,苏尚美,等.波瓣混合器涡系结构及射流掺混机理的数值研究[J].航空动力学报,2013,28(2):338-346. YUE Wei,LEI Zhijun,SU Shangmei,et al.Numerical investigation on vortex structure and jet mixing mechanism in lobed mixer[J].Journal of Aerospace Power,2013,28(2):338-346.(in Chinese) [9] 李立国,张靖周.航空用引射混合器[M].北京:国防工业出版社,2007. [10] Mao R,Yu S C M,Chua L P.On the vorticity characteristics of lobe-forced mixer at different configurations[J].Experiments in Fluids,2009,46(6):1049-1066. [11] Abolfadl A,Metwally M A,El-Messiry A M,et al.Experimental investigation of lobed mixer performance[J].Journal of Propulsion and Power,2001,17(5):1109-1116. [12] SHAN Yong,ZHANG Jingzhou.Numerical investigation of flow mixture enhancement and infrared radiation shield by lobed forced mixer[J].Applied Thermal Engineering,2009,29(17/18):3687-3695. [13] Wellner J,Rober T,Tranb P.On the development and application of a hybrid approach to the simulation of broadband noise in a lobed mixer[R].AIAA-2011-2799,2011. [14] LI Ping,LI Wenlong,HE Guoqiang.Research on turbulent mixing of the bypass and core flows for air-turbo-rocket[J]. Journal of Solid Rocket Technology,2012,35(1):47-52. [15] Majamaki A J,Smith O I,Karagozian A R.Passive mixing control via lobed injectors in high-speed flow[J].AIAA Journal,2003,41(4):623-632. [16] XIE Yi,LIU Youhong.Numerical investigation of lobe spacing ratio on performance of forced mixer nozzle[J].Heat Transfer Asian Research,2011,40(7):593-607. [17] Salman H,Page G J,McGuirk J J.Prediction of lobed mixer vortical structures with a k-ε turbulence model[J].AIAA Journal,2003,41(5):878-887.
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