Volume 31 Issue 6
Jun.  2016
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PAN Zhen-hua, ZHANG Peng-gang, ZHU Yue-jin, PAN Jian-feng. Experiment on geometrical limits of gaseous detonation of ethylene/oxygen mixtures in narrow gaps[J]. Journal of Aerospace Power, 2016, 31(6): 1297-1302. doi: 10.13224/j.cnki.jasp.2016.06.003
Citation: PAN Zhen-hua, ZHANG Peng-gang, ZHU Yue-jin, PAN Jian-feng. Experiment on geometrical limits of gaseous detonation of ethylene/oxygen mixtures in narrow gaps[J]. Journal of Aerospace Power, 2016, 31(6): 1297-1302. doi: 10.13224/j.cnki.jasp.2016.06.003

Experiment on geometrical limits of gaseous detonation of ethylene/oxygen mixtures in narrow gaps

doi: 10.13224/j.cnki.jasp.2016.06.003
  • Received Date: 2015-08-12
  • Publish Date: 2016-06-28
  • To study the detonation limits of detonation, the gaseous detonation of stoichiometric ethylene/oxygen mixtures through narrow gaps with height of 1.0-4.0mm was experimentally studied by varying initial pressure of 0.004-0.04MPa. The soot film was utilized to record the cellular structure of detonation, and the high-speed cinematography was used to capture the flame. Results show that the smaller narrow gap height means the higher critical initial pressure for limits of detonation propagation. For unsteady detonation propagation modes near the detonation limits, including "stuttering" detonation and galloping detonation, the corresponding range of initial pressure becomes wider as the height of gap decreases. By considering both initial and boundary conditions, the ratio of hydraulic diameter to cellular width is found to be an appropriate sensitivity parameter to characterize the mixture. The range of this ratio for defining detonation limits in different narrow gap sizes is 0.326-0.403.

     

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  • [1]
    Fischer J,Liebner C,Hieronymus H,et al.Maximum safe diameters of microcapillaries for a stoichiometric ethene/oxygen mixture[J].Chemical Engineering Science,2009,64(12):2951-2956.
    [2]
    Roy G D,Frolov S M,Borisov A A.Pulse detonation propulsion:challenges,current status,and future perspective[J].Progress in Energy and Combustion Science,2004,30(6):549-552.
    [3]
    Pan Z H,Fan B C,Zhang X D,et al.Wavelet pattern and self-sustained mechanism of gaseous detonation rotating in a coaxial cylinder[J].Combustion and Flame,2011,158(11):2220-2228.
    [4]
    Gordon W E,Mooradian A J,Harper S A.Limit and spin effects in hydrogen-oxygen detonations[J].Symposium (International) on Combustion,1959,7(1):752-759.
    [5]
    Manson N,Brochet C,Brossard J,et al.Vibratory phenomena and instability of self-sustained detonations in gases[J].Symposium (International) on Combustion,1963,9(1):461-469.
    [6]
    Lee J J,Dupré G,Knystautas R,et al.Doppler interferometry study of unstable detonations[J].Shock Waves,1995,5(3):175-181.
    [7]
    Ishii K,Grönig H.Behavior of detonation waves at low pressures[J].Shock Waves,1998,8(1):55-61.
    [8]
    Tang J,Radulescu M I.Dynamics of shock induced ignition in Fickett's model:influence of χ [J].Proceeding of the Combustion Institute,2013,34(2):2035-2041.
    [9]
    Edwards D H,Hooper G,Morgan J M.A study of unstable detonation using a microwave interferometer[J].Journal of Physics D:Applied Physics,1974,7(2),242-247.
    [10]
    Haloua F,Brouillette M,Lienhart V,et al.Characteristics of unstable detonations near extinction limits[J].Combustion and Flame,2000,122(4):422-438.
    [11]
    Gao Y,Lee J H S,Ng H D.Velocity fluctuation near the detonation limits[J].Combustion and Flame,2014,161(11):2982-2990.
    [12]
    Gao Y,Ng H D,Lee J H S.Experimental characterization of galloping detonation in unstable mixtures[J].Combustion and Flame,2015,162(6):2405-2413.
    [13]
    Lee J H S.The detonation phenomenon[M].Cambridge,UK:Cambridge University Press,2008.
    [14]
    Chao J,Ng H D,Lee J H S.Detonability limits in thin annular channels[J].Proceeding of the Combustion Institute,2009,32(2):2349-2354.
    [15]
    Lee J H S,Jesuthasan A,Ng H D.Near limit behavior of the detonation velocity[J].Proceedings of the Combustion Institute,2013,34(2):1957-1963.
    [16]
    Camargo A,Ng H D,Chao J,et al.Propagation of near-limit gaseous detonations in small diameter tubes[J].Shock Waves,2010,20(6):499-508.
    [17]
    Ishii K,Itoh K,Tsuboi T.A study on velocity deficits of detonation waves in narrow gaps[J].Proceeding of the Combustion Institute,2002,29(2):2789-2794.
    [18]
    Ishii K,Monwar M.Detonation propagation with velocity deficits in narrow channels[J].Proceeding of the Combustion Institute,2011,33(2):2359-2366.
    [19]
    张超,唐豪,李明,等.当量比和间隙尺寸对爆震波传播过程的影响[J].航空动力学报,2012,27(9):1948-1957. ZHANG Chao,TANG Hao,LI Ming,et al.Effects of equivalence ratio and gap size on the propagation behavior of detonations[J].Journal of Aerospace Power,2012,27(9):1948-1957.(in Chinese)
    [20]
    Gordon S,Mcbrid B J.Computer program for calculation of complex chemical equilibrium compositions and application:analysis[R].NASA-RP-1311,1994.
    [21]
    Gao Y,Ng H D,Lee J H S.Minimum tube diameters for steady propagation of gaseous detonations[J].Shock Waves,2014,24(4):447-454.
    [22]
    Kitano S,Fukao M,Susa A,et al.Spinning detonation and velocity deficit in small diameter tubes[J].Proceeding of the Combustion Institute,2009,32(2):2355-2362.
    [23]
    Vasil'ev A A.Quasi-steady regimes of wave propagation in active mixtures[J].Shock Waves,2008,18(4):245-253.
    [24]
    Radulescu M I.The propagation and failure mechanism of gaseous detonations:experiments in porous-walled tubes[D].Montreal:McGill University,2003.
    [25]
    Kaneshige M,Shepherd J E.Detonation database[R].Pasadena:California Institute of Technology,1997.
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