基于流固耦合方法的某风扇超声速非失速颤振研究  

Numerical Investigations on Supersonic Unstalled Flutter of Fan Based on Fluid-Structure Interaction Approach

作　　者：张帅 陶冶 高磊[1] 张霞妹 ZHANG Shuai;TAO Ye;GAO Lei;ZHANG Xia-mei(Aero-Engine Flight Test,Chinese Flight Test Establishment,Xi'an Shaanxi 710089,China)

机构地区：[1]中国飞行试验研究院发动机所,陕西西安710089

出　　处：《机械研究与应用》2018年第5期52-56,60,共6页Mechanical Research & Application

摘　　要：针对某典型大展弦比风扇的超声速非失速颤振问题,采用基于流固耦合方法的能量累积法,对该风扇转子的超声速非失速颤振现象及颤振边界进行数值分析。研究结果表明,设计转速下的风扇转子叶片在其近效率最大点处发生基于一阶振动模态、IBPA=334.3°的超声速非失速颤振现象;叶片超声速非失速颤振边界的一阶叶片结构固有频率为f=201.68 Hz。In view of the problem of supersonic unstalled flutter in a typical large fan,the energy accumulation method based on the fluid-structure interaction method was used to analyze the supersonic unstalled flutter phenomenon and the flutter boundary.The research results show that the supersonic unstalled flutter phenomenon based on the first-order mode and IBPA=334.3°occurs at the maximum speed of the fan rotor at the design speed,and the natural frequency of the first-order blade structure at the boundary is f=201.68 Hz.

关 键 词：风扇转子 流固耦合 气动弹性失稳 非失速颤振 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]