支板势干涉下压气机叶片瞬态强迫响应分析  

Analysis of Compressor Blade Transient Forced Response Due to Strut Potential Interference

作　　者：罗楚威 陈江[1] 向航 LUO Chuwei;CHEN Jiang;XIANG Hang(School of Energy and Power Engineering,Beihang University,Beijing 102206,China)

机构地区：[1]北京航空航天大学能源与动力工程学院,北京102206

出　　处：《工程热物理学报》2025年第4期1089-1097,共9页Journal of Engineering Thermophysics

基　　金：“两机”国家科技重大专项基础研究(No.J2019-Ⅱ-0005-0025)。

摘　　要：以某多级低压压气机后1.5级和压气机过渡段为研究对象,采用单向流固耦合方法,对过渡段支板势干涉影响下的低压压气机末级转子叶片瞬态强迫响应问题展开研究,并详细分析了支板势干涉对上游叶排非定常流场和流动损失的影响。结果表明:支板对静叶出口流场存在明显的阻滞作用,可以加剧或抑制静叶出口的流动分离,其影响随着周向距离的增加而减小;支板势干涉给末级转子叶片带来了强烈的非定常扰动,当扰动频率与叶片固有频率接近时,叶片将产生共振;转子与支板间的静叶对于支板的势干涉作用有明显的放大效应。The research focuses on the back 1.5 stage and the transition section equipped with struts of a multistage low-pressure compressor.The transient forced response of rotor blade in the final stage due to potential interference from the downstream strut was investigated using a one-way fluid-structure coupling method.Detailed analysis was conducted on the impact of strut potential disturbances on the unsteady flow field and flow loss of the upstream blade row.The results show that the strut has a significant blocking effect on the flow field at the stator outlet,which can aggravate or inhibit the flow separation of stator,and the effect decreases with the increase of the circumferential distance.Potential interference from the downstream strut introduces significant unsteady disturbances to the final rotor blades.Resonance occurs when the disturbance frequency closely matches the natural frequency of the blade.The stator blades located between the rotor and the strut significantly amplify the potential disturbances caused by the strut.

关 键 词：压气机 强迫响应 支板 势干涉 流固耦合 

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]