Uncertainty effect of leading edge fouling on aerodynamic performance of compressor cascades

IF 5 1区工程技术 Q1 ENGINEERING, AEROSPACE

Aerospace Science and Technology Pub Date : 2025-04-21 DOI:10.1016/j.ast.2025.110235

Panpan Tu , Guang Yang , Limin Gao , Tantao Liu , Song Yang

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Abstract

To investigate the uncertainty effects of leading edge fouling (Fouling-LE) on aerodynamic performance, uncertainty models are developed by integrating fouling thickness distribution with sparse grid techniques. The results indicate that Fouling-LE uncertainty reduces the available range of negative incidence by 2.5°, increases the likelihood of aerodynamic performance degradation (pressure ratio π and loss ω), raises the probability of a lower airflow turning angle, and introduces a significant risk of flow instability across all incidences. Specifically, the probability of Fouling-LE causing π to exceed the stable operating range is 16.14 % and 10.08 %, while the probability of ω exceeding the stable operating range is 9.88 % and 16.25 %, at the incidence of i=-2.5° and 7°, respectively. The influence of Fouling-LE on the flow field progressively extends downstream, altering the aerodynamic loading on the blade surfaces and inducing a forward shift in the transition position.

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前缘结垢对压气机叶栅气动性能的不确定性影响

为了研究前缘污垢对气动性能的不确定性影响，采用稀疏网格技术对污垢厚度分布进行积分，建立了不确定性模型。结果表明，Fouling-LE不确定性将可用的负入射角范围减小了2.5°，增加了气动性能下降的可能性（压力比π和损失ω），增加了较低气流转角的可能性，并在所有入射角中引入了显著的流动不稳定风险。具体来说，当i=-2.5°和7°时，Fouling-LE导致π超出稳定工作范围的概率分别为16.14%和10.08%，而ω超出稳定工作范围的概率分别为9.88%和16.25%。Fouling-LE对流场的影响逐渐向下游延伸，改变了叶片表面的气动载荷，引起过渡位置的前移。

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

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.