Investigation on Aerodynamic Robustness of Compressor Blade with Asymmetric Leading Edge

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-02-01 DOI:10.47176/jafm.17.02.2127

G. Yang, †. L.Gao, C. Ma, H. Wang, N. Ge

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Abstract

To improve the aerodynamic characteristics of compressor blades, a novel asymmetric leading edge (ASYLE) has been introduced and shown to offer superior performance. However, the aerodynamic robustness of such specially designed leading edge (LE) remains unclear due to the considerable uncertainty problems it presents. This paper investigates the robustness of ASYLE blade under both geometric and operational uncertainties. Profile deviations within ±0.05mm were introduced to investigate the influence of manufacturing errors. In addition, the perturbated inflow angles between ±0.375° were considered for uncertain inflow conditions. The statistic aerodynamic performance as well as operating dispersibilities at Ma =0.7 were obtained by the non-intrusive polynomial chaos (NIPC) method. The results show that considering uncertain profile errors, the operating range of ASYLE blade is 2.3° wider than original leading edge (ORILE) blade and the dispersion of total pressure loss can be reduced by 53.1% at β 1 =45.8°. Regarding uncertain inflow angle variations, the total pressure loss dispersion of ASYLE blade can be reduced by 93.8% at β 1 =50.8°. The ASYLE shows better overall aerodynamic robustness than ORILE upon considering uncertainty limits. The influence propagations in the flow fields of both uncertainties were further analysed, which revealed that the variations of separation bubble structure near LE are the direct cause to the aerodynamic uncertainties

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非对称前缘压缩机叶片气动鲁棒性研究

为了改善压缩机叶片的气动特性，人们引入了一种新型非对称前缘（ASYLE），并证明其性能优越。然而，由于存在相当大的不确定性问题，这种特殊设计的前缘（LE）的气动稳健性仍不明确。本文研究了 ASYLE 叶片在几何和运行不确定性下的稳健性。为了研究制造误差的影响，引入了 ±0.05 毫米以内的轮廓偏差。此外，还考虑了±0.375°之间的扰动流入角，以应对不确定的流入条件。通过非侵入式多项式混沌（NIPC）方法获得了 Ma =0.7 时的统计气动性能和工作分散性。结果表明，考虑到不确定的剖面误差，ASYLE 叶片的工作范围比原始前缘（ORILE）叶片宽 2.3°，在 β 1 =45.8° 时，总压力损失的分散性可降低 53.1%。对于不确定的流入角变化，在 β 1 = 50.8° 时，ASYLE 叶片的总压力损失分散度可降低 93.8%。考虑到不确定性限制，ASYLE 的整体气动鲁棒性优于 ORILE。进一步分析了两种不确定性在流场中的影响传播，发现LE附近分离气泡结构的变化是气动不确定性的直接原因。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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