Inlet/Engine Interactions in an Axisymmetric Pulse Detonation Engine System
Inlet/Engine Interactions in an Axisymmetric Pulse Detonation Engine System
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DOI：
10.2514/2.6109
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发表时间：
2003-03
影响因子：
1.9
通讯作者：
J. Gustavsson;Venkata Nori;C. Segal
中科院分区：
文献类型：
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作者：
J. Gustavsson;Venkata Nori;C. Segal
针对自由流马赫数为 2.1 的轴对称外部压缩锥体，检查了振荡背压对脉冲爆震发动机进气系统的影响。扩散器出口处的压力扰动是由模拟阀门的旋转机构产生的，该阀门定期打开和关闭爆震管。每个管的振荡频率在 30 到 100 Hz 之间变化。通过改变下游堵塞，改变泄漏量，并获得不同的质量流量。在所有情况下，结果表明入口处的静态压力和停滞压力的波动在 3% 以内，在入口捕获附近没有发现任何流动不稳定。
The effects of oscillatory backpressure on the air induction system for pulse detonation engines were examined for an axisymmetric, external compression cone guration at a freestream Mach number of 2.1. The pressure perturbations at the diffuser exit were produced by a rotating mechanism simulating a valve, which periodically opened and closed the detonation tubes. Theoscillation frequency wasvaried from 30 to 100 Hzfor each individual tube. Through varying the downstream blockage, the spillage was altered, and different mass e ows wereobtained. In all casestheresults indicated that e uctuations in thestatic and stagnation pressures in the inletwere within 3%, without e ow instability noted near the inlet capture.