进口扰动强度对于压缩系统失稳形式的影响研究  

Influence of Inlet Perturbations on Compression System Instability States

作　　者：刘思余 申世才[1] Liu Siyu;Shen Shicai(Engine Department of Chinese Flight Test Establishment,Xi′an 710089,Shaanxi,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：《工程与试验》2020年第2期7-10,共4页Engineering and Test

摘　　要：通过Moore-Greitzer模型对不同阀门系数下的压缩系统进行仿真,给定不同强度的进口扰动,发现进口扰动强度会对压缩系统的失稳过程与失稳形式产生影响:(1)对于稳定工作状态的压缩系统,扰动强度增加使得系统恢复稳定的时间加长,甚至无法恢复;对于失稳工况的压缩系统,扰动强度增加使得失稳发生的时间减少。(2)当进口扰动强度达到一定程度时,压缩系统的失稳形式不再由系统本身所决定,而主要取决于扰动的强度。This paper simulates the working conditions of compression system at different throttle coefficients by Moore-Greitzer model,while the amplitudes of inlet perturbations are also different.The simulation results indicate that the amplitudes of inlet perturbations have a great impact on the instability progresses and instability states.The time to recover to stables condition at high throttle coefficient will be longer while the time to develop to unstable condition at low throttle coefficient will be shorter when the amplitudes of inlet perturbations is higher.When the perturbations is stronger than the system damping,the instability state depends on the perturbations but the system.

关 键 词：压缩系统 气动稳定性 Moore-Greitzer模型 进口扰动 

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]