Abstract A numerical study on the performance of synthetic jet for flow separation control on a high-speed compressor stator vane is performed. Four control schemes including full-span and part-span configurations are investigated at both design and off-design conditions. Results indicate that both full-span and part-span schemes could effectively delay flow separation and reduce total pressure loss for the compressor stator vane, the adaptability of the flow control under off-design conditions is also validated. Within the investigated incidence range, the full-span configuration is able to gain the most significant performance improvement, by which a maximum loss reduction of 23.8 % is obtained at i=2 deg. The part-span configuration could reorganize the vortex structures more efficiently and cut off the interaction between the ring-like vortex and the passage vortex, thus improving its performance in the corner region. In terms of flow control efficiency, the part-span configurations turn out to be more superior, where the highest control efficiency of 614.0 % is achieved at i=0 deg with the total height of the actuator being 40 %H. The flow control efficiency for all the schemes is higher than 100 % within the whole operating range, demonstrating a promising prospect for the application of synthetic jet in axial compressors.

中文翻译：

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带定制合成射流的高速压缩机静叶三维分离控制数值研究

摘要 对高速压气机静叶分流控制合成射流性能进行了数值研究。在设计和非设计条件下研究了四种控制方案，包括全跨和部分跨配置。结果表明，全跨度和部分跨度方案都可以有效地延迟流动分离并减少压气机静叶的总压力损失，也验证了非设计条件下流量控制的适应性。在研究的入射范围内，全跨度配置能够获得最显着的性能改进，在 i=2 度时获得 23.8% 的最大损耗降低。部分跨度配置可以更有效地重组涡结构，切断环状涡和通道涡之间的相互作用，从而提高其在角区的性能。在流量控制效率方面，部分跨度配置更优越，在 i=0 度时实现了 614.0% 的最高控制效率，执行器的总高度为 40%H。所有方案在整个运行范围内的流量控制效率均高于100%，表明合成射流在轴流压缩机中的应用前景广阔。在 i=0 度时达到 0 %，执行器的总高度为 40 %H。所有方案在整个运行范围内的流量控制效率均高于100%，表明合成射流在轴流压缩机中的应用前景广阔。在 i=0 度时达到 0 %，执行器的总高度为 40 %H。所有方案在整个运行范围内的流量控制效率均高于100%，表明合成射流在轴流压缩机中的应用前景广阔。