Homogeneous-Dilution Model of Partially Fueled Simplified Pulse Detonation Engines
Homogeneous-Dilution Model of Partially Fueled Simplified Pulse Detonation Engines
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DOI：
10.2514/1.21223
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发表时间：
2007-09
影响因子：
1.9
通讯作者：
T. Endo;T. Yatsufusa;S. Taki;A. Matsuo;K. Inaba;J. Kasahara
中科院分区：
文献类型：
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作者：
T. Endo;T. Yatsufusa;S. Taki;A. Matsuo;K. Inaba;J. Kasahara
提出了一种估算部分燃料简化脉冲爆震发动机推进性能的模型。该模型有两个显著的优点：不需要经验参数，该模型能够估计推力墙压力保持在高于其初始值的冲量和持续时间。在该模型中，目标部分燃料脉冲爆震发动机被等效的全燃料脉冲爆震发动机取代。等效脉冲爆震发动机完全充满可爆和惰性气体的均匀混合物，分别填充目标部分燃料的脉冲爆震发动机。而当量的全燃料脉冲爆震发动机的性能是通过先前建立的全燃料脉冲爆震发动机的性能估算模型来估算的。在氢气或乙烯作为燃料的情况下，将模型的结果与数值计算结果和实验结果进行了比较，验证了模型的适用性。此外，还描述了用等效的全燃料脉冲爆震发动机替代目标部分燃料脉冲爆震发动机所产生的适用范围。
A model for estimating the propulsive performance of a partially fueled simplified pulse detonation engine is proposed. The model has two significant advantages: no empirical parameter is required, and the model enables estimation of both the impulse and the duration during which the pressure at the thrust wall remains higher than its initial value. In the model, an objective partially fueled pulse detonation engine is replaced with the equivalent fully fueled pulse detonation engine. The equivalent pulse detonation engine is fully filled with a homogeneous mixture of the detonable and inert gases that separately fill the objective partially fueled pulse detonation engine. The performances of the equivalent fully fueled pulse detonation engine are instead estimated by a previously developed performance-estimation model for a fully fueled pulse detonation engine. The applicability of the model is examined by comparing the results of the model with numerical and experimental results in the cases where hydrogen or ethylene was used as fuel. Further, the applicability limits, which arose from replacement of the objective partially fueled pulse detonation engine with the equivalent fully fueled pulse detonation engine, are described.