流体力学与飞行力学

一种鲁棒的数据驱动不确定性量化方法及在压气机叶栅中的应用

  • 王浩浩 ,
  • 高丽敏 ,
  • 杨光 ,
  • 吴宝海
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  • 1.西北工业大学 动力与能源学院,西安 710072
    2.西北工业大学 翼型、叶栅国家级重点实验室,西安 710072
    3.西北工业大学 机电学院,西安 710072
.E-mail: gaolm@nwpu.edu.cn

收稿日期: 2022-10-26

  修回日期: 2022-11-25

  录用日期: 2023-01-03

  网络出版日期: 2023-01-12

基金资助

国家自然科学基金(51790512);西北工业大学博士创新种子基金(CX2021075)

摘要

发展了一种基于预处理矩阵的数据驱动不确定性量化算法,以解决实际工程中面临的实测数据稀缺及分布形式复杂的不确定性量化问题。通过鲁棒性分析、正交基函数的重构、非线性测试函数验证了所发展方法的有效性和精度。基于实测的叶片前缘半径和来流攻角随机波动数据,以某高亚声速压气机叶栅为研究对象,采用自主发展的不确定性量化方法定量评估了不确定性因素对叶栅气动性能的影响。结果表明:在设计攻角和大攻角下叶栅真实的总压损失系数高于名义值的概率分别为83.6%和69.9%;大攻角工况下叶栅总压损失的分散度约是设计工况下的2.4倍;前缘半径耦合来流攻角的不确定性引起前缘绕流发生较大波动,是导致叶栅总体性能退化及性能分散的主要原因。

本文引用格式

王浩浩 , 高丽敏 , 杨光 , 吴宝海 . 一种鲁棒的数据驱动不确定性量化方法及在压气机叶栅中的应用[J]. 航空学报, 2023 , 44(17) : 128169 -128169 . DOI: 10.7527/S1000-6893.2023.28169

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