蒸汽吸入对两级跨音速风扇影响的数值研究  

Investigation on Effect of Steam Ingestion on Two-stage Transonic Fan

作　　者：赵伟辰 陈杰[1] 黄国平[1] ZHAO Weichen;CHEN Jie;HUANG Guoping(College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《机械制造与自动化》2020年第3期123-126,154,共5页Machine Building & Automation

基　　金：中央高校基本科研业务费南京航空航天大学研究生创新基地(实验室)开放基金(kfjj20170214)。

摘　　要：采用数值计算方法研究了吸入不同状态蒸汽后跨音速风扇性能与内部主要流动特征的变化规律。结果表明:吸入气态与液态蒸汽后对风扇堵塞点流量系数、稳定工作范围与总压比有着相反的影响。液态蒸汽在风扇内部的蒸发过程降低了风扇消耗的压缩功,等熵压缩效率最高提升1.21%,随蒸汽吸入量增大,性能变化更为明显。吸入液态蒸汽后风扇叶顶间隙泄漏涡与弦向的夹角增大至15.3°,激波后形成更大范围的低相对总压区。The performance and flow feature of a two stage transonic fan after ingesting various forms and mass steam are simulated by the numerical method.The results show that the flow coefficient,stable working range and total pressure ratio vary after ingesting gas and liquid state steam.Droplets evaporate in fan stages,thus decreasing the consumption of compression work.The isentropic efficiency is up to 1.21%after ingesting liquid state steam.With more steam taken into fan stages,the performance variation is more obvious.The angle of blade chord and tip leakage vortex trajectory rises to 15.3 degree and the region behind the shock wave extends in liquid steam ingestion conditions.

关 键 词：航空母舰 舰载机 高压蒸汽弹射 跨音速风扇 蒸汽吸入 性能 流动特征 

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]