| Citation: | GUO Tairan, LI Li, ZHOU Leping, et al. Effects of composite cooling medium on the cooling of curved slit film holes[J]. Journal of Aerospace Power, 2025, 40（12）：20240068 doi: 10.13224/j.cnki.jasp.20240068
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The effects of air, steam and droplet mixing on the film cooling characteristics were numerically simulated for the slit-shaped film holes on the curved surface with different curvature radii under the cooling inlet with/without pin fins structure. The results showed that compared with the flat surface, under the case of mass ratio equal to 1.0, 1.5 and 2.0, the average film cooling efficiency of the convex surface slot film hole was lower, and the average film cooling efficiency of the concave surface slot film hole was basically higher. With the decrease of curvature, the cooling efficiency gradually increased. When the cooling medium was air and steam mixture, the film cooling efficiency increased with the increase of steam mass flow rate. When the cooling air was mixed with droplets, compared with pure air, the average film cooling efficiency increased as the mass flow rate increased. Under the same mass flow rate of droplets conditions, the diameter of droplet was not necessarily better when bigger.
| [1] |
蒋洪德, 任静, 李雪英, 等. 重型燃气轮机现状与发展趋势[J]. 中国电机工程学报, 2014, 34(29): 5096-5102. JIANG Hongde, REN Jing, LI Xueying, et al. Status and development trend of the heavy duty gas turbine[J]. Proceedings of the CSEE, 2014, 34(29): 5096-5102. (in Chinese
JIANG Hongde, REN Jing, LI Xueying, et al. Status and development trend of the heavy duty gas turbine[J]. Proceedings of the CSEE, 2014, 34(29): 5096-5102. (in Chinese)
|
| [2] |
张魏, 金文. 燃气轮机冷却技术综述[J]. 燃气轮机技术, 2008, 21(1): 24-27. ZHANG Wei, JIN Wen. Summary of gas turbine cooling technology[J]. Gas Turbine Technology, 2008, 21(1): 24-27. (in Chinese
ZHANG Wei, JIN Wen. Summary of gas turbine cooling technology[J]. Gas Turbine Technology, 2008, 21(1): 24-27. (in Chinese)
|
| [3] |
朱莉娅, 徐国强. 涡轮冷却技术对航空发动机性能的影响[J]. 推进技术, 2014, 35(6): 793-798. ZHU Liya, XU Guoqiang. Influence of turbine cooling technology on aero-engine performance[J]. Journal of Propulsion Technology, 2014, 35(6): 793-798. (in Chinese
ZHU Liya, XU Guoqiang. Influence of turbine cooling technology on aero-engine performance[J]. Journal of Propulsion Technology, 2014, 35(6): 793-798. (in Chinese)
|
| [4] |
张宗卫, 朱惠人, 刘聪, 等. 全气膜冷却叶片表面换热系数和冷却效率研究[J]. 西安交通大学学报, 2012, 46(7): 103-107. ZHANG Zongwei, ZHU Huiren, LIU Cong, et al. Heat transfer coefficient and film cooling effectiveness on a full-film cooling vane[J]. Journal of Xi’an Jiaotong University, 2012, 46(7): 103-107. (in Chinese
ZHANG Zongwei, ZHU Huiren, LIU Cong, et al. Heat transfer coefficient and film cooling effectiveness on a full-film cooling vane[J]. Journal of Xi’an Jiaotong University, 2012, 46(7): 103-107. (in Chinese)
|
| [5] |
董平. 航空发动机气冷涡轮叶片的气热耦合数值模拟研究[D]. 哈尔滨: 哈尔滨工业大学, 2009. DONG Ping. Numerical simulation study on gas-heat coupling of aero-engine air-cooled turbine blades[D]. Harbin: Harbin Institute of Technology, 2009. (in Chinese
DONG Ping. Numerical simulation study on gas-heat coupling of aero-engine air-cooled turbine blades[D]. Harbin: Harbin Institute of Technology, 2009. (in Chinese)
|
| [6] |
宋英杰, 张超, 宋立明, 等. 射流角与吹风比影响涡发生器强化气膜冷却性能的实验研究[J]. 推进技术, 2017, 38(12): 2761-2770. SONG Yingjie, ZHANG Chao, SONG Liming, et al. Experimental study of impact of inclination angle and blowing ratio on vortex generator enhancing film cooling effectiveness[J]. Journal of Propulsion Technology, 2017, 38(12): 2761-2770. (in Chinese
SONG Yingjie, ZHANG Chao, SONG Liming, et al. Experimental study of impact of inclination angle and blowing ratio on vortex generator enhancing film cooling effectiveness[J]. Journal of Propulsion Technology, 2017, 38(12): 2761-2770. (in Chinese)
|
| [7] |
ZHANG Jingzhou, ZHU Xingdan, HUANG Ying, et al. Investigation on film cooling performance from a row of round-to-slot holes on flat plate[J]. International Journal of Thermal Sciences, 2017, 118: 207-225. doi: 10.1016/j.ijthermalsci.2017.04.029
|
| [8] |
刘存良, 朱惠人, 白江涛. 收缩-扩张形气膜孔提高气膜冷却效率的机理研究[J]. 航空动力学报, 2008, 23(4): 598-604. LIU Cunliang, ZHU Huiren, BAI Jiangtao. Study on the physics of film-cooling effectiveness enhancement by the converging-expanding hole[J]. Journal of Aerospace Power, 2008, 23(4): 598-604. (in Chinese
LIU Cunliang, ZHU Huiren, BAI Jiangtao. Study on the physics of film-cooling effectiveness enhancement by the converging-expanding hole[J]. Journal of Aerospace Power, 2008, 23(4): 598-604. (in Chinese)
|
| [9] |
张强, 吉洪湖, 梁萌, 等. 异型扰流-狭缝气膜层板结构的冷却特性分析[J]. 机械制造与自动化, 2022, 51(4): 44-47. ZHANG Qiang, JI Honghu, LIANG Meng, et al. Analysis of cooling characteristics of lrregular turbulent flow-slit gas film laminate structure[J]. Machine Building & Automation, 2022, 51(4): 44-47. (in Chinese
ZHANG Qiang, JI Honghu, LIANG Meng, et al. Analysis of cooling characteristics of lrregular turbulent flow-slit gas film laminate structure[J]. Machine Building & Automation, 2022, 51(4): 44-47. (in Chinese)
|
| [10] |
叶林. 带有强化换热结构的涡轮叶片尾缘新型半劈缝冷却特性研究[D]. 西安: 西北工业大学, 2018. YE Lin. Study on cooling characteristics of a new type of half-slit at the trailing edge of turbine blade with enhanced heat transfer structure[D]. Xi’an: Northwestern Polytechnical University, 2018. (in Chinese
YE Lin. Study on cooling characteristics of a new type of half-slit at the trailing edge of turbine blade with enhanced heat transfer structure[D]. Xi’an: Northwestern Polytechnical University, 2018. (in Chinese)
|
| [11] |
陶智, 李林, 罗翔, 等. 圆形孔排的气膜冷却曲率实验研究[J]. 热科学与技术, 2009, 8(1): 8-12. TAO Zhi, LI Lin, LUO Xiang, et al. Influence of curvature on film-cooling on turbine blade surface[J]. Journal of Thermal Science and Technology, 2009, 8(1): 8-12. (in Chinese
TAO Zhi, LI Lin, LUO Xiang, et al. Influence of curvature on film-cooling on turbine blade surface[J]. Journal of Thermal Science and Technology, 2009, 8(1): 8-12. (in Chinese)
|
| [12] |
吴宏, 孟恒辉, 赵振明, 等. 吹风比和曲率对旋转曲面气膜冷却效率影响[J]. 北京航空航天大学学报, 2009, 35(7): 812-816. WU Hong, MENG Henghui, ZHAO Zhenming, et al. Numerical investigation of film cooling effectiveness over rotating curved surfaces: blowing ratio and curvature effect[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(7): 812-816. (in Chinese
WU Hong, MENG Henghui, ZHAO Zhenming, et al. Numerical investigation of film cooling effectiveness over rotating curved surfaces: blowing ratio and curvature effect[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(7): 812-816. (in Chinese)
|
| [13] |
黄逸. 表面曲率影响涡轮叶片气膜冷却效果的数值分析[D]. 上海: 上海理工大学, 2012. HUANG Yi. Numerical analysis of the influence of surface curvature on the film cooling effect of turbine blades[D]. Shanghai: University of Shanghai for Science & Technology, 2012. (in Chinese
HUANG Yi. Numerical analysis of the influence of surface curvature on the film cooling effect of turbine blades[D]. Shanghai: University of Shanghai for Science & Technology, 2012. (in Chinese)
|
| [14] |
史珂. 蒸汽冷却涡轮导向叶片流动与传热的数值模拟和分析[D]. 南京: 南京航空航天大学, 2007. SHI Ke. Numerical simulation and analysis of flow and heat transfer in steam-cooled turbine guide vanes[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2007. (in Chinese
SHI Ke. Numerical simulation and analysis of flow and heat transfer in steam-cooled turbine guide vanes[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2007. (in Chinese)
|
| [15] |
WAGBER W, KRUSE A. Properties of water and steam: the industrial standard IAPWS-IF97 for the thermodynamic properties and supplementary equations for other properties [M]. Berlin, Heidelberg, Germany: Springer-Verlag, 2013.
|
| [16] |
ABDELMAKSOUD R, WANG Ting. Simulation of air/mist cooling in a conjugate, 3-D gas turbine vane with internal passage and external film cooling[J]. International Journal of Heat and Mass Transfer, 2020, 160: 120197. doi: 10.1016/j.ijheatmasstransfer.2020.120197
|
| [17] |
ZHOU Junfei, WANG Xinjun, LI Jun, et al. CFD analysis of mist/air film cooling on a flat plate with different hole types[J]. Numerical Heat Transfer, Part A: Applications, 2017, 71(11): 1123-1140. doi: 10.1080/10407782.2017.1337994
|
| [18] |
ZHENG Zhenchen, ZHOU Leping, DU Xiaoze, et al. Numerical investigation on conjugate heat transfer of evaporating thin film in a sessile droplet[J]. International Journal of Heat and Mass Transfer, 2016, 101: 10-19. doi: 10.1016/j.ijheatmasstransfer.2016.05.005
|
| [19] |
LI Xianchang, WANG Ting. Simulation of film cooling enhancement with mist injection[J]. Journal of Heat Transfer, 2006, 128(6): 509-519. doi: 10.1115/1.2171695
|
| [20] |
BARROW H, POPE C W. Droplet evaporation with reference to the effectiveness of water-mist cooling[J]. Applied Energy, 2007, 84(4): 404-412. doi: 10.1016/j.apenergy.2006.09.007
|
| [21] |
季魁玉, 周骏飞, 郑达仁. 孔型对水雾/空气气膜冷却特性影响的数值模拟研究[J]. 热能动力工程, 2018, 33(11): 42-51. JI Kuiyu, ZHOU Junfei, ZHENG Daren. Numerical simulation of mist/air film cooling characteristics with different hole types[J]. Journal of Engineering for Thermal Energy and Power, 2018, 33(11): 42-51. (in Chinese
JI Kuiyu, ZHOU Junfei, ZHENG Daren. Numerical simulation of mist/air film cooling characteristics with different hole types[J]. Journal of Engineering for Thermal Energy and Power, 2018, 33(11): 42-51. (in Chinese)
|
| [22] |
蔡庆芝. 带扰流柱进气方式的缝形孔气膜冷却特性研究[D]. 南京: 南京航空航天大学, 2018. CAI Qingzhi. Study on film cooling characteristics of slotted holes with spoiler intake mode[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2018. (in Chinese
CAI Qingzhi. Study on film cooling characteristics of slotted holes with spoiler intake mode[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2018. (in Chinese)
|
| [23] |
ROZATI A, TAFTI D K. Effect of coolant-mainstream blowing ratio on leading edge film cooling flow and heat transfer-LES investigation[J]. International Journal of Heat and Fluid Flow, 2008, 29(4): 857-873. doi: 10.1016/j.ijheatfluidflow.2008.02.007
|
| [24] |
BUNKER R S. A study of mesh-fed slot film cooling[J]. Journal of Turbomachinery, 2011, 133: 011022. doi: 10.1115/1.4000548
|
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