Wave Attenuation and Interactions in a Pulsed Detonation Combustor-Turbine Hybrid System
Wave Attenuation and Interactions in a Pulsed Detonation Combustor-Turbine Hybrid System
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DOI：
10.2514/6.2006-1235
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发表时间：
2006-01
期刊：
影响因子：
--
通讯作者：
A. Rasheed;A. Furman;A. Dean
中科院分区：
文献类型：
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作者：
A. Rasheed;A. Furman;A. Dean
一个大型多管脉冲爆震燃烧室与一个单级轴向涡轮机集成在一起，该燃烧室有八个管排列成一个环形结构，额定功率为8 lbm/s，25000 RPM和1000 hp。该PDC-涡轮机系统使用乙烯-空气混合物操作，每个管以20 Hz点火。高频压力传感器安装在整个流路中，以研究波的相互作用和穿过涡轮机的衰减。多管PDC在一系列条件下操作，具有三种点火模式：单管点火、所有管同时点火和所有管顺序点火。对这些数据的分析表明，PDC出口和涡轮机入口平面之间的过渡增压室中的波相互作用会影响多管PDC的最佳运行。此外，通过单级轴流式涡轮机，峰值压力脉冲衰减超过20 dB，宽带噪声衰减超过10 dB。
A large-scale, multi-tube pulsed detonation combustor with eight tubes arranged in a can-annular configuration was integrated with a single-stage axial turbine nominally rated for 8 lbm/s, 25000 RPM and 1000 hp. This PDC-turbine system was operated using ethyleneair mixtures with each tube firing at 20 Hz. High frequency pressure transducers were installed throughout the flow path to investigate the wave interactions and attenuation across the turbine. The multi-tube PDC was operated at a range of conditions with three firing patterns: a single tube firing, all tubes simultaneous and all tubes sequential. Analysis of these data reveal wave interactions in the transition plenum between the PDC exit and turbine inlet plane can affect the optimum operation of the multi-tube PDC. In addition, there is over 20 dB attenuation of the peak pressure pulse and 10 dB attenuation of the broadband acoustic noise through the single-stage, axial flow turbine.