Experimental Verification of a Practical Engineering Design Method for Mixed-Flow Compressor Stages

Chenqing Zhang, Chenxi Zhao, Yonghong Tang, G. Xi
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Abstract

The mixed-flow compressor has high efficiency and pressurization ability even at an extremely high flow rate. However, so far the design principle of the mixed-flow compressor has not well been established. In this paper, a novel and practical design method of mixed flow impellers is developed, in which the meridional construction needs few control parameters, and easily applied to engineering product design. In order to verify the developed method, a mixed-flow impeller with flow rate coefficient of 0.2374 is designed and manufactured for the experimental study. The experimental results show that the peak efficiency of the compressor at the machine Mach number of 0.6 and 0.8 reach 85.17% and 85.20%, respectively, which are competitively well-performed at large flow coefficient in the published literature. The comparison between experimental and numerical results verifies the feasibility and effectiveness of this proposed method and also provides some valuable guidance for the choice of the exit inclination angle of the mixed-flow impellers.
混流压气机级实用工程设计方法的实验验证
混流压缩机即使在极高的流量下也具有很高的效率和增压能力。然而,混流压缩机的设计原理至今还没有很好的确立。本文提出了一种新颖实用的混合流叶轮设计方法,其子午结构所需控制参数少,易于应用于工程产品设计。为了验证所开发的方法,设计并制造了流量系数为0.2374的混流叶轮进行实验研究。实验结果表明,在机器马赫数为0.6和0.8时,压气机的效率峰值分别达到85.17%和85.20%,在已发表的文献中具有较好的大流量系数性能。实验结果与数值计算结果的对比验证了该方法的可行性和有效性,并对混流叶轮出口倾角的选择提供了有价值的指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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