摘要
对某一定尺寸的六喷管超音速引射器进行气动性能的实验研究。结果表明：随着主次流压比Ｐ＊ｐ／Ｐ＊ｓ增加，引射系数及修正引射系数下降；当引射系数增加时，混合管动量修正系数Ｋｍ下降，但主喷管流量系数μ变化不大。对上述工况进行理论计算的结果与实验数据符合良好。
The supersonic 6-nozzle ejector performance has been investigated experimentally for the given geometric dimensions.The experiment ranges over 1 98≤ P * P/P * S≤7 46,0 971≤T * p≤T * s ≤1 02 and L m/D m =0 80.The entrainment ratio x varies from 6 96 to 11 66 for the ejector with a diffuser,and its corrected value xT * s/T * p varies from 6 88 to 11 62;on the other hand,the entrainment ratio varies from 2 82 to 6 28 for the ejector without the diffuser,and its corrected value varies from 2 78 to 6 24.The experimental results show that the entrainment ratio and its corrected value decrease with the increase of P * p/P * s ,but the corrected momentum coefficient K m in the mixing pipe goes up.The mass flow rate coefficient μ of the primary nozzle increases slightly as the entrainment ratio goes up .The theoretical analysis has been done for the above conditions by application of aerodynamics.The comparison between the analysis and the experiment shows a good agreement.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
1996年第3期312-314,共3页
Journal of Aerospace Power
关键词
喷管
引射器
超音速
性能分析
航空发动机
Jet nozzles Ejectors Supersonic velocity Performance Analysis
