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《Chinese Journal of Theoretical and Applied Mechanics》 2010-04
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NUMERICAL RESEARCH ON BLUNT BODY SHOCK-INDUCED OSCILLATING COMBUSTION PHENOMENA

Liu Shijie~2) Sun Mingbo Lin Zhiyong Liu Weidong (Institute of Aerospace and Material Engineering,National University of De fence Technology,Changsha 410073,China)  
An improved uncoupled solver of non-equilibrium flow was used to split the axisymmetric Euler equations for a reacting flow.Inviscid flux was calculated with fifth-order WENO scheme.Simplified implicit formulation was adopted to deal with the stiffness generated by the chemical reacting source term of species equations.Time integration was performed with two-order TVD Runge-Kutta scheme.At the flow Mach number M of 4.48 and 4.79,shock-induced oscillating combustion phenomena around blunt body in H_2/Air mixture were calculated.It shows that the numerical results are more sensitive to the grid refinement on normal direction than on flow direction.To get accurate solution,there must be enough grid nodes in the heat release zone.At the flow Mach number of 4.48,sensitive analysis of different reaction mechanisms were studied.At the given experimental conditions,the values of induction time calculated from J and B-W mechanisms are close to each other and their calculated frequencies nearly equal to the experimental results.Density-time distribution along the stagnation streamline from J and B-W mechanisms agree well with McVey-Toong theory. Induction time calculated from JM mechanism is longer than others,and the calculated oscillating frequency is lower than experimental results.At flow Mach number of 4.79,calculated frequency of J mechanism agrees with experimental result.B-W mechanism is sensitive to fluctuations of flowfield,and its release time is short. Fiercely oscillating combustion front would easily lead to local detonations,which made the pressure history of stagnation point disordered.Due to using the fifth-order WENO scheme,relatively high-resolution of present calculation can be obtained.
【Fund】: 国家自然科学基金资助项目(90816016)~~
【CateGory Index】: O354.5
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【Citations】
Chinese Journal Full-text Database 3 Hits
1 LIU Jun 1, ZHANG Han xin 2, GAO Shu chun 2 (1 College of Aerospace and Material Engineering, National Univ. of Defense Technology, Changsha 410073, China; 2 China Aerodynamics Research & Development Center, Mianyang 621000, China);A New Uncoupled Method for Numerical Simulation of Nonequilibrium flow[J];Journal of National University of Defense Technology;2000-05
2 SUN Ming-bo,LIANG Jian-han,WANG Zhen-guo(College of Aerospace and Materials Engineering,National University of Defense Technology,Changsha 410073,China);Validation of an uncoupled solver of non-equilibrium flow for shock-induced combustion[J];Journal of Aerospace Power;2008-11
3 LIU Jun (Institute of Aerospace and Material Enginerring,National University Defence Technology, Changsha, 410073,China);A new nonequilibrium numerical method and simulation of oscillating shock-induced combustion[J];Acta Aerodynamica Sinica;2003-01
【Co-citations】
Chinese Journal Full-text Database 9 Hits
1 Liu Jun (Institute of Aerospace and Material Engineerring,National University Defence Technology,Changsha,410073)$$$$;NUMERICAL STUDY ON THE NON-EQUILIBRIUM FLOW OF RAM ACCELERATOR IN THE COMBUSTIVE MIXTURE GAS[J];Journal of Ballistics;2002-04
2 WANG Hong-bo,SUN Ming-bo,WU Hai-yan,WANG Zhen-guo(College of Aerospace and Material Engineering,National Univ.of Defense Technology,Changsha 410073,China);Investigation of Dual Time-step Approach for Supersonic Combustion Flow[J];Journal of National University of Defense Technology;2010-03
3 SUN Ming-bo,LIANG Jian-han,WANG Zhen-guo(College of Aerospace and Materials Engineering,National University of Defense Technology,Changsha 410073,China);Validation of an uncoupled solver of non-equilibrium flow for shock-induced combustion[J];Journal of Aerospace Power;2008-11
4 LIU Jun (Institute of Aerospace and Material Enginerring,National University Defence Technology, Changsha, 410073,China);A new nonequilibrium numerical method and simulation of oscillating shock-induced combustion[J];Acta Aerodynamica Sinica;2003-01
5 LIU Jun~1, YANG Yan-guang~2(1.College of Aerospace and Material Engineering,NUDT, Changsha, Hunan410073,China;2.China Aerodynamics Research and Development Center, Mianyang, Sichuan621000,China);Numerical simulation of lateral jet control of a hypersonic missile[J];Acta Aerodynamica Sinica;2004-03
6 ZHANG Li,YE Zheng-yin,WANG Gang(National Key Laboratory of Aerodynamic Design and Research,Northwestern Polytechnical University,Xi′an 710072,China);An uncoupled method for numerical simulation of the nonequilibrium flow in COIL[J];Acta Aerodynamica Sinica;2008-02
7 Liu Jun Liu Yu~(1)) Zhou Songbai (College of Aerospace and Material Engineering,National University of Defense Technology,Changsha 410073,China);SIMULATION OF SHOCK INDUCED COMBUSTION BASED ON A NOVEL UNCOUPLED METHOD[J];Chinese Journal of Theoretical and Applied Mechanics;2010-03
8 LIU Jun(Inst. of Aerospace and Material Engineering, National Univ. Defence Technology, Changsha 410073, China);Numerical study on chemical mechanism in supersonic H_2/Air mixture gas flow[J];Journal of Propulsion Technology;2003-01
9 LIU Jun(Inst. of Aerospace and Material Engineering, National Univ. of Defence Technology, Changsha 410073, China);Numerical study for CH_4/air supersonic combustion[J];Journal of Propulsion Technology;2003-04
【Secondary Citations】
Chinese Journal Full-text Database 4 Hits
1 LIU Jun 1, ZHANG Han xin 2, GAO Shu chun 2 (1 College of Aerospace and Material Engineering, National Univ. of Defense Technology, Changsha 410073, China; 2 China Aerodynamics Research & Development Center, Mianyang 621000, China);A New Uncoupled Method for Numerical Simulation of Nonequilibrium flow[J];Journal of National University of Defense Technology;2000-05
2 Liu Jun 1 Liu Ruichao 2 Jia Zhonghu 3 Liu Wei 1 (1.Department of Aerospace Technology ,NUDT, Changsha 410073) (2.The Third Engineer Science Research Institute of General Staff,LuoYang 471023) (3.Department of Mechanical Engineering,Navy Aeronaut;Numerical Simulation of Blast Interaction with Buildings[J];ACTA AERODYNAMICA SINICA;2000-01
3 LIU Jun (Institute of Aerospace and Material Enginerring,National University Defence Technology, Changsha, 410073,China);A new nonequilibrium numerical method and simulation of oscillating shock-induced combustion[J];Acta Aerodynamica Sinica;2003-01
4 Zhang Hanxin; Chen Jianqiang; Gao Shuchun(Ching Aerodynamics Research and Development Center);NUMERICAL SIMULATION OF SUPERSONIC NONEQUILBRIUM FLOWS FOR H_2/O_2 COMBUSTIONS[J];JOURNAL OF ASTRONAUTICS;1994-02
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