학술논문
回流燃烧室小弯管双层壁流量系数及冷却特性试验 / Experiment on Discharge Coefficient and Cooling Characteristics of Double-Wall of Concave Wall in Reverse Flow Combustor
Document Type
Academic Journal
Author
Source
推进技术 / Journal of Propulsion Technology. 44(12):102-109
Subject
Language
Chinese
ISSN
1001-4055
Abstract
为获得耦合参数(冲击孔径di,冲击孔流向间距S,冲击孔展向间距P)、小弯管外壁曲率半径(R1,R2)对回流燃烧室小弯管双层壁结构无量纲化流量系数Cd/Cd,max及无量纲化冷却效率η/ηmax的影响规律,设计了4组共16个方案开展了实验研究.结果表明:S/P和R1/R2对于Cd/Cd,max的影响较小;随着S/P的增大,η/ηmax呈先增后减的趋势,在S/P=0.8时达到最大值;随着R1/R2的增大,η/ηmax呈增大的趋势;随着S/di和P/di的增大,Cd/Cd,max和η/ηmax呈减小的趋势.