计算力学学报2018，Vol.35Issue(3)：299-303,5.DOI:10.7511/jslx20170609002
尾流激励的叶片气动力降阶模型
Aerodynamic ROM of blade due to upstream wake
摘要
Abstract
Aerodynamic reduced order model(ROM)is an efficient method to study aeroelastic vibration of turbo-machine blades.Nowadays,the researches on this topic are mainly focused on flutter analysis.There is no discussion about the forced vibration corresponding to incoming wakes,which is more important for turbo-machine design.In this paper,a Volterra ROM is proposed for describing the aerodynamic forces on the blades induced by wake excitation,which aims to provide an effective way for blade-wake or stator-rotor interaction analysis.Traveling wave method is used to simplify the wake inputs in the ROM.Step method is used to identify the kernels of the ROM.A 2D blade example is used to show the accuracy and efficiency of the ROM.The results show that the method can characterise the aerodynamic forces corresponding to the wakes.关键词
气动力降阶模型/尾流/Volterra级数/核函数识别/叶片/阶跃识别法Key words
aerodynamic ROM/wake/Volterra series/kernel identification/blade/step method分类
数理科学引用本文复制引用
李立州,杨明磊,张珺,罗骁,原梅妮..尾流激励的叶片气动力降阶模型[J].计算力学学报,2018,35(3):299-303,5.基金项目
国家自然科学基金(51775518)资助项目. （51775518）
