航空科学技术2025，Vol.36Issue(7)：19-25,7.DOI:10.19452/j.issn1007-5453.2025.07.003
缩比宽弦风扇叶片颤振相似性研究
Investigation on Flutter Similarity of Scaled Wide Chord Fan Blade
摘要
Abstract
Due to the limitations of the test rig size and flow rate,the aerodynamic performance tests of high bypass ratio wide chord fans often use scaled model test specimen.However,it is still uncertain whether the scaled fans and full-scale fans have flutter similarity.This paper discusses the similarity between the scaled fan and the full-scale prototype fan from four aspects:steady flow field,vibration characteristics,acoustic wave propagation characteristics,and aeroelastic eigenvalues.The flutter characteristic parameters of the scaled fan and the prototype fan are analyzed using the aeroelastic eigenvalue method.The results show that the real part error of the aeroelastic eigenvalues of the first three modes of the scaled fan and prototype fan is less than 0.16%,and the imaginary part error is less than 7.33%.Moreover,the aerodynamic damping coefficient curves of the first three modes are highly consistent.Therefore,the flutter characteristics of the scaled model have a high similarity to the prototype fan.关键词
风扇叶片颤振/几何缩比/相似性/气弹特征值法/影响系数法Key words
fan blade flutter/geometric scale/similarity/aeroelastic eigenvalue method/influence coefficient method分类
航空航天引用本文复制引用
杨明明,黄璜,陈美宁,贾新凯..缩比宽弦风扇叶片颤振相似性研究[J].航空科学技术,2025,36(7):19-25,7.基金项目
航空科学基金(2020Z039053004)Aeronautical Science Foundation of China(2020Z039053004) （2020Z039053004）
