航天null检测 | 径向旋流器中V形结构的实验研究-北京欧兰科技发展有限公司

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应用领域	航空航天
检测样本	航天
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参考标准	暂无

采用美国Artium公司PDI-200型二维相位多普勒粒子干涉仪，对发动机燃料径向旋流混合器采用V型构型的空气动力学性能进行了实验研究。

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激光相位多普勒干涉仪LDV，PDI，PDPA，PDA
型号：PDI

¥100万 - 200万
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方案详情

The efficiency of modern Gas Turbine can be increased by accelerating the atomization
and evaporation of liquid fuel injected into the combustor. Chevrons mixers, seen in service on today’s advanced jet engines, generate streamwise vorticity off of the chevron tips which is able to quickly mix two separate flows and reduce the exhaust noise of these engines. The enhanced mixing ability of a chevron exhaust nozzle motivated the investigation of chevrons a typical combustion swirling flow, where fuel-air mixing is a limiting factor of the combustion system’s performance.

The focus of this research is to experimentally investigate the isothermal aerodynamic
and multi-phase flow properties of radial-radial counter rotating swirl cups with chevron mixing
generators. Each swirl cup assembly features a primary swirler with a converging-diverging
venturi, secondary swirler, exit flare with a 72° expansion angle, and a simplex fuel nozzle with a flow number of 0.7 and spray angle of 80°. Six unique trailing edge designs were applied to the primary swirler: four chevron designs, one shortened venturi, and one baseline. Confined and unconfined aerodynamic studies by 2D Laser Doppler Velocimetry was coupled with flow visualization and 2D Phase Doppler Interferometry to characterize the single and multi-phase flow properties of the different trailing edge designs.

上一篇在一个双稳湍流涡旋火焰中，对间歇性动态的时间-频率定位

下一篇螺旋式喷嘴的空气辅助雾化

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北京欧兰科技发展有限公司

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