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首页> 外文期刊>Journal of Aerospace Sciences and Technologies >EXPERIMENTAL AND NUMERICAL STUDY OF PULSE DETONATION ENGINE WITH ETHYLENE AS A FUEL
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EXPERIMENTAL AND NUMERICAL STUDY OF PULSE DETONATION ENGINE WITH ETHYLENE AS A FUEL

机译：以乙烯为燃料的脉冲爆震发动机的实验与数值研究

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This paper presents an insight on the study of transient, compressible, intermittent pulsed detonation engine with one-step overall reaction model to reduce the computational complexity in detonation simulations. Investigations are done onflow field conditions developing inside the tube with the usage of irreversible one-step chemical reactions for detonations. In the present simulations one and two-dimensional axisymmetric tubes are considered for the investigation. Studies are also performed with different grid sizes which influence the prediction of Von-Neumann spike, CJ Pressure and detonation velocity. Numerical studies are conducted using 66mm diameter tube and compared with the literature values. The simulation result from the single-step reaction model agrees well with the previous published literature of multi-step reaction models. The present studies shows that one-step overall reaction model is sufficient to predict the flow properties with reasonable accuracy. Experiments are conducted in a 25mm dia. tube with Ethylene/Air mixtures. The reactants are premixed and injected into the detonation tube using solenoid valves. The equivalence ratio of the fuel/oxi-dizer mixture and the length of the detonation tube are varied to understand their effects on detonation parameters. Finally the results from the present numerical study are compared and validated using NASA CEA and experiments.
机译：本文提出了对瞬态，可压缩，间歇式脉冲爆震发动机的研究的见解，该发动机具有一步整体反应模型，可降低爆震模拟中的计算复杂性。通过使用不可逆的一步化学反应进行爆轰，研究了在管内发生的流场条件。在目前的模拟中，考虑使用一维和二维轴对称管。还使用不同的网格尺寸进行了研究，这些尺寸会影响Von-Neumann峰值，CJ压力和爆震速度的预测。使用直径为66mm的管子进行了数值研究，并与文献值进行了比较。单步反应模型的模拟结果与先前发表的多步反应模型的文献非常吻合。本研究表明，一步反应整体反应模型足以以合理的精度预测流动性质。实验在直径25mm的地方进行。乙烯/空气混合物的试管。将反应物预混合并使用电磁阀注入爆震管。改变燃料/氧化剂-混合气的当量比和引爆管的长度，以了解它们对引爆参数的影响。最后，使用NASA CEA和实验对当前数值研究的结果进行了比较和验证。

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    P. Srihari; M. A. Mallesh; G. Sai Krishna Prasad; B.V.N. Charyulu; M. Ezhil Shakti; D. N. Reddy;

  • 作者单位

    Defence Research and Development Laboratory(DRDL) Kanchanbagh Post, Hyderabad-500 058;

    Defence Research and Development Laboratory(DRDL) Kanchanbagh Post, Hyderabad-500 058;

    Defence Research and Development Laboratory(DRDL) Kanchanbagh Post, Hyderabad-500 058;

    Defence Research and Development Laboratory(DRDL) Kanchanbagh Post, Hyderabad-500 058;

    Defence Research and Development Laboratory(DRDL) Kanchanbagh Post, Hyderabad-500 058;

    Osmania University Hyderabad-500 000;

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