Numerical investigation of a variable stator vane with nonuniform partial radial gaps in an annular compressor cascade

IF 0.7 4区工程技术 Q4 ENGINEERING, AEROSPACE

International Journal of Turbo & Jet-Engines Pub Date : 2022-08-15 DOI:10.1515/tjj-2022-0039

Yimin Zhang, Shaowen Chen, Yueqi Liu, S. Wang

引用次数: 1

Abstract

Abstract A variable stator vane (VSV) with nonuniform partial radial gaps is numerically investigated in an annular compressor cascade. Five adjusting angles (α = −5.5°, −5°, 0°, 5° and 10°) are chosen to simulate different working conditions. The VSV is adjusted in negative direction means that the stagger angle increases and the VSV is more closed. Since the VSV is installed in an annular cascade, the heights of the partial gaps are nonuniform and reaches 3.8% of the span. Results show that as the VSV is adjusted negatively, the total pressure loss rises by 20.3% and a huge area of corner separation appears. The outflow angle is also more distorted along radial direction. Comparisons with a fixed-configuration stator show that although the VSV would cause higher loss, it indeed plays an important role in adjusting the outflow angle.

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环空压气机叶栅非均匀部分径向间隙可变静叶的数值研究

摘要对环形压气机叶栅中局部径向间隙不均匀的可变静叶进行了数值研究。选择五个调节角度（α=−5.5°、−5°、0°、5°和10°）来模拟不同的工作条件。在负方向上调整VSV意味着参差角增加并且VSV更加闭合。由于VSV安装在环形叶栅中，部分间隙的高度不均匀，达到跨度的3.8%。结果表明，随着VSV的负调节，总压力损失增加了20.3%，并出现了大面积的角分离。流出角沿径向方向也更加扭曲。与固定配置定子的比较表明，尽管VSV会导致更高的损失，但它确实在调节流出角方面发挥了重要作用。

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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来源期刊

International Journal of Turbo & Jet-Engines 工程技术-工程：宇航

CiteScore

1.90

自引率

11.10%

发文量

审稿时长

6 months

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