进口动态总压流场对燃机稳定性裕度影响  

Influence of inlet dynamic total pressure flow field on gas-turbine engine stability margin

作　　者：李孝堂[1,2] 王勤[2] 薛秀生[2] 王亮[2] 邢志国[2] 王洪祥[2] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191 [2]中国航空工业集团公司沈阳发动机设计研究所,沈阳110015

出　　处：《航空动力学报》2009年第11期2403-2409,共7页Journal of Aerospace Power

摘　　要：为了得到某燃机发生喘振的原因,在燃机进口进行了动态流场测试,对流场中存在的较大涡旋尺度、较大瞬间动态压力畸变以及与进口涡壳共振产生的转速基频脉动等动态流场特点进行了详细研究,获得了进口动态总压流场特点.试验数据和资料分析表明:进口动态流场的特点使发动机稳定裕度损失加大,从而造成发动机喘振.Gas-turbine inlet dynamic total pressure flow field was measured to analyze the reason of surges happened during previous engine tests.Inlet flow field characteristics were obtained such as larger eddy scale and higher instant pressure distortion and pressure fluctuation associated with rotor speed base frequency which caused by the resonance of the engine and the inlet scroll case etc.Experimental data and information show that inlet dynamic flow field characteristics of the above-mentioned will make the e...

关 键 词：发动机试验 进口流场 动态压力 稳定性裕度 

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]