Corner separation limits the increase of the aerodynamic loading in the compressor. Previous numerical studies indicate that the Blended Blade and End Wall (BBEW) technology is useful in delaying, or reducing, or even eliminating the corner separation. This paper presents combined experimental and numerical investigations on a BBEW cascade and its prototype. The experimental results show that the design of Blended Blade and End Wall (BBEW) can improve the performance of the cascade when the incidence angle was positive or at the design point, and the total pressure loss coefficient was reduced by 7 %-8 %. The performance improvement mainly located from 10 %-25 % span heights. Compared with the experiment data, the SST turbulence model shows the best results of the flow field. Based on the numerical results, the details of the flow field and the effect of the Blended Blade and End Wall (BBEW) design on the corner separation are discussed and analyzed.

中文翻译：

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混合叶片和端壁压气机叶片气动性能研究。

角部分离限制了压缩机中空气动力负荷的增加。先前的数值研究表明，叶片和端壁混合（BBEW）技术可用于延迟，减少或什至消除转角分离。本文介绍了BBEW级联及其原型的组合实验和数值研究。实验结果表明，当入射角为正值或在设计点时，叶片和端壁混合设计（BBEW）可以改善叶栅的性能，总压力损失系数降低了7％-8％。性能提升主要集中在跨度高度为10％-25％的位置。与实验数据相比，SST湍流模型显示了流场的最佳结果。根据数值结果，