流量系数
冷却液
机械
材料科学
压力系数
灵敏度(控制系统)
流量(数学)
横截面(物理)
总压比
热力学
物理
喷嘴
工程类
电子工程
量子力学
气体压缩机
作者
Haoyang Liu,Qiang Du,Qingzong Xu,Guangyao Xu,Li Hongye,Dawei Chen
出处
期刊:Journal of turbomachinery
[ASME International]
日期:2023-09-07
卷期号:145 (11)
被引量:3
摘要
Abstract An experimental study was performed on the discharge coefficients of laidback fan-shaped holes under different internal coolant crossflow orientations. The influence of the geometric and flow parameters on the discharge coefficient was investigated under flat plate conditions, where the pressure ratio ranged from 1 to 1.6. The results show that the film hole discharge coefficient is more sensitive to variations in the coolant crossflow under small pressure ratios. In comparison, the discharge coefficient is much less sensitive to the change of coolant crossflow under high pressure. Meanwhile, the length of the cylindrical section varied over the range of 1D–4D, and the length of the expansion section varied from 2D to 6D, where D represents the diameter of the film hole. The results show that the discharge coefficient is much more sensitive to the length of the cylindrical section than to the length of the expansion section. To quantify the sensitivity of the internal crossflow effects on the discharge coefficient, a low-ordered reduced model is proposed for the discharge coefficient of laidback fan-shaped holes. Both the geometric and flow parameters are considered in the model and give prediction errors within 5%.
科研通智能强力驱动
Strongly Powered by AbleSci AI