双层壳型冲击/气膜综合流量系数实验研究

推进技术 ›› 2012, Vol. 33 ›› Issue (6): 875-880.

双层壳型冲击/气膜综合流量系数实验研究

宋新伟,毛军逵,屠泽灿,苏云亮,郭文

南京航空航天大学能源与动力学院,江苏南京 210016;南京航空航天大学能源与动力学院,江苏南京 210016;南京航空航天大学能源与动力学院,江苏南京 210016;中国燃气涡轮研究院,四川成都 610500;中国燃气涡轮研究院,四川成都 610500

发布日期:2021-08-15
作者简介:宋新伟(1986—),男,硕士,研究领域为叶轮机械气动热力学。E-mail:song4817077@126.com
基金资助:
航空动力验证计划。

Experimental Investigations on the Discharge Coefficient of Double-DeckerJet Impingement/Film Structures

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;China Gas Turbine Establishment, Chendu 610500,China;China Gas Turbine Establishment, Chendu 610500,China

Published:2021-08-15

摘要/Abstract

摘要： 为了研究新型高效涡轮铸冷叶片内部冷却通道中的流动特性,以铸冷叶片典型结构——双层壳型冲击/气膜复合冷却结构的平壁模型为研究对象,实验研究了该种冷却结构的综合流量系数C_d随冲击雷诺数Red (600~2800) ,主次流吹风比M (0.7~7),冲击间距比H/d(0.5~1.25),冲击孔和气膜孔间距比 P/d(0,3,4)等参数的变化规律。研究结果表明:(1) C_d随着冲击雷诺数Red,吹风比M的增加而增大,在吹风比小于3工况下更为显著；(2) 在相同的气动参数条件下,综合流量系数C_d随着孔排距比P/d的增加而增大, 随着冲击间距比H/d的减小而显著降低。 

关键词: 航空、航天推进系统;双层壳型;冲击/气膜冷却;流量系数

Abstract: To obtain the flow characteristics of new type high efficient castcool cooling turbine blade, experiments were carried out to investigate the discharge coefficient C_d of the typical structure, the lamellar double-decker jet impingement or film structures. In experiments,the parameters such as the Reynolds number Red (600 ~2800), blowing rate M(0.7~7), the ratio of the jet impingement distance to the diameter of the jet holes H/d(0.5~1.25), and the ratio of the distance between jet hole and film hole to the diameter of the jet holes P/d (0,3,4) were varied, and the rules of C_d were concluded. The Experimental results show that, (1) C_d increases with increasing the impingement Reynolds number Red and the blowing rate M especially when M is smaller than 3.(2) C_d increases with P/d increasing, and decreases significantly with H/d reducing.

Key words: Aero space propulsion system; Double-decker；Jet impingement/film cooling; Discharge coefficient

宋新伟,毛军逵,屠泽灿,苏云亮,郭文. 双层壳型冲击/气膜综合流量系数实验研究[J]. 推进技术, 2012, 33(6): 875-880.

参考文献

[1] 吉洪湖,郑际睿.模拟叶片前缘的复合冷却实验研究[J] .工程热物理学报,6,7(2):147-150.
[2] 毛军逵,胡博,苏云亮,等.气膜内冷通道高度对气膜孔流量系数的影响 [J].航空动力学报,7,6 (3).
[3] 毛军逵,刘震雄,郭文,等.双层壳型冲击/气膜结构内表面换热特性实验[J].推进技术,7,8(3):235-239.(MAO Jun-kui,LIU Zhen-xiong,GUO Wen,et al.Experiment on Local Heat Transfer Coefficient of a Double-Decker Jet Impingement/Film Cooling Structure[J].Journal of Propulsion Technology,7,8(3):235-239.)
[4] 刘震雄,毛军逵,郭文,等.双层壳型冲击/气膜复合冷却效果的实验[J].2007,22(2):216-221.
[5] 王开,徐国强,陶智.冲击与气膜的组合形式对冷却效果的影响[J].北京航空航天大学学报,8,4(07).
[6] 王小平,毛军逵.双层壳程冲击/气膜复合冷却结构的机理性研究[D].南京:南京航空航天大学,2007.
[7] 胡博,毛军逵.狭小受限空间内气膜孔流量系数的数值模拟和实验研究 [D].南京:南京航空航天大学, 2008.
[8] 谢涛,张育林.GA-HCM混合聚类算法及其在液体火箭发动机故障检测中的应用[J].推进技术,7,8 (1).(XIE Tao,ZHANG Yu-lin.GA-HCM Hybrid Clustering Algorithm and Its Application in Fault Detection for Liquid Rocket Engine System[J].Journal of Propulsion Technology,7,8(1).)
[9] 谢涛,张育林.非线性混合回归演化算法研究[J].推进技术,8,9 (5).(XIE Tao,ZHANG Yu-lin.Study on Hybrid Evolut-ionary Nonlinear Regression Algorithm[J].Journal of Propulsion Techndogy,8,9(5).)
[10] Eric Chen-Kuo Tsoa, Bezdek J C, Nikhil R Pal.Fuzzy Ko-Honen Clustering Networks [J].Pattern Reeognition, 4,7 (5):757-764.
[11] Phanendra Babu G, Narasimha Murty M.Clustering with Evolution Strategies [J].Pattern Recognition, 4,7(2):321-329.
[12] 许全宏,林宇震,刘高恩.冲击加多斜孔双层壁冷却方式流量系数研究[J].推进技术,0,1(5):49-52.(XU Quan-hong,LIN Yu-zhen,LIU Gao-en.Discharge Coefficient of Double Wall with Discrete-Hole and Inclined Multihole for Combustor Liner[J].Journal of Propulsion Technology,0,1(5):49-52.)
[13] 胡博,毛军逵,刘震雄,等.狭小空间内气膜孔流量系数的数值模拟[J].航空动力学报,0,4 (09)1981-1988.
[14] 张靖周.高等传热学[M].北京:科学出版社,2009:341-342.