摘要
针对喷嘴与供气孔半径位置不匹配的预旋供气系统,设计了带有径向倾角的叶型接受孔,并进行了实验研究。实验同时在静子和转子上测量了系统各关键截面的压力、温度和流量,并与采用直跑道型接受孔的预旋供气系统性能进行了对比。结果表明:随流量比的增加,系统压比逐渐增大,系统温比逐渐降低;高流量比条件下,随旋转马赫数的增加,系统压比略有增加,系统温比随之降低;相较于采用跑道型接受孔的预旋供气系统,带叶型接受孔的预旋供气系统转子部件的流动损失明显减小;在设计点工况下,系统比功耗可降低23.9%,系统温降效率可提高13.7%,实验条件下的系统温降可达28.1 K,系统温降效率可达0.58。该叶型接受孔的设计思路可为喷嘴与供气孔半径位置不匹配的预旋供气系统进一步提升系统性能提供设计依据。
For a high-radius pre-swirl system with a radius difference between nozzle and air supply hole,a vane-shaped receiver hole with axial angle was designed.The pressure,temperature and mass flow rate of some critical sections were measured on the stator and rotor,and compared with those of the pre-swirl system using runway-shaped receiver holes.Results show that the system pressure ratio gradually increases and the system temperature ratio decreases as the mass flow ratio increases.While with the rotating Mach number increasing under the condition of large mass flow ratio,the system pressure ratio increases slightly and the system temperature ratio decreases.Compared with the pre-swirl air supply system using runway-shaped receiver holes,the flow resistance of the rotor components is significantly reduced for the pre-swirl air supply system with vane-shaped receiver holes.Under experimental conditions,the specific work consumption is reduced by 23.9%,the system temperature drop efficiency increases by 13.7%,and the system temperature drop and system temperature drop efficiency reach 28.1 K and 0.58,respectively.The design idea of vane-shaped receiver hole may provide the basis to improve the system performance for a high-radius pre-swirl system with a radius difference between nozzle and air supply hole.
作者
龚文彬
刘高文
王斐
李鹏飞
林阿强
王治武
GONG Wenbin;LIU Gaowen;WANG Fei;LI Pengfei;LIN Aqiang;WANG Zhiwu(School of Power and Energy,Northwestern Polytechnical University,Xi’an 710129,China;Shaanxi Key Laboratory of Thermal Science in Aero-engine System,Northwestern Polytechnical University,Xi’an 710072,China;China Air-to-Air Missile Research Institute,the Aviation Industry Corporation of China,Luoyang,Henan 471000,China)
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2021年第7期97-105,共9页
Journal of Xi'an Jiaotong University
基金
国家科技重大专项资助项目(2017-Ⅲ-0011-0037)
中央高校基本科研业务费专项资金资助项目(3102021OQD701)
关键词
预旋供气系统
叶型接受孔
压比
温比
pre-swirl air supply system
vane-shaped receiver hole
pressure ratio
temperature ratio
