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进气旋流畸变与低速轴流压气机相互作用的实验研究

An experimental investigation on the interaction between inlet swirl distortion and a low-speed axial compressor.

作者信息

Wang Xuegao, Hu Jun, Guo Jin, Tu Baofeng, Wang Zhiqiang

机构信息

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Jiangsu Province Key Laboratory of Aerospace Power Systems, Nanjing, China.

出版信息

Sci Prog. 2020 Jul-Sep;103(3):36850420940920. doi: 10.1177/0036850420940920.

DOI:10.1177/0036850420940920
PMID:32672092
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10451049/
Abstract

The aim of this article mainly lies in two aspects. The first is to investigate the effect of inlet swirl distortion on the performance and stability of a low-speed compressor experimentally. The second is to quantify swirl pattern revolution through the compressor and find out background causes of the change in compressor performance. Swirl distortion makes the leading-edge incidence opposite between tip and hub regions, compared to that of clean flow. And the compressor performance change is ultimately determined by these two aspects. Results indicate that negative bulk swirl improves pressure rise, and the effect is on the contrary to the positive bulk swirl. Under the condition of paired swirl, pressure rise also presents a reduction. All these three types of swirl have little effect on the stall boundary. Although swirl distortion shows clear recovery at rotor exit, downstream components still work at off-design conditions due to the induced nonuniformity in axial velocity and total pressure.

摘要

本文的目的主要体现在两个方面。一是通过实验研究进气旋流畸变对低速压气机性能和稳定性的影响。二是量化旋流模式在压气机中的旋转情况，并找出压气机性能变化的背景原因。与清洁气流相比，旋流畸变使叶尖和轮毂区域的前缘攻角相反。而压气机性能的变化最终由这两个方面决定。结果表明，负的整体旋流可提高压升，其效果与正的整体旋流相反。在成对旋流的情况下，压升也会降低。这三种旋流对失速边界的影响都很小。尽管旋流畸变在转子出口处有明显的恢复，但由于轴向速度和总压的诱导不均匀性，下游部件仍在非设计工况下工作。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bd4/10451049/e35cf2768bdd/10.1177_0036850420940920-fig17.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bd4/10451049/e35cf2768bdd/10.1177_0036850420940920-fig17.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bd4/10451049/0b7148087642/10.1177_0036850420940920-fig1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bd4/10451049/c03b55c5398a/10.1177_0036850420940920-fig2.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bd4/10451049/35da1883c201/10.1177_0036850420940920-fig7.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bd4/10451049/a042f05af1d2/10.1177_0036850420940920-fig12.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bd4/10451049/e35cf2768bdd/10.1177_0036850420940920-fig17.jpg

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