| Citation: | WANG Xiaozeng, KAN Rui, LIU Cunliang. Effect of density ratio on film cooling characteristics of a bowed and twisted turbine vane with fan-shaped film holes[J]. Journal of Aerospace Power, 2023, 38（1）：70-78 doi: 10.13224/j.cnki.jasp.20220154
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The influences of density ratio and mass flow ratio on the full coverage film cooling effectiveness of a bowed and twisted high pressure turbine 1st stage vane were studied experimentally in a fan-shaped cascade wind tunnel. The pressure sensitive paint technique was used to measure the film cooling effectiveness of the vane. Results showed that the film cooling effectiveness increased with increasing density ratio and mass flow ratio. When the density ratio increased from 1.0 to 2.0, the spanwise averaged film cooling effectiveness increased by 6% to 32%. The film cooling effectiveness only had a minor increase when the density ratio increased from 1.0 to 1.5. However, it had a great increase when the density ratio increased from 1.5 to 2.0, meaning that the relationship between film cooling effectiveness and density ratio was non-linear.
| [1] |
BUNKER R S. Evolution of turbine cooling[R]. ASME GT 2017-63205, 2017.
|
| [2] |
GOLDSTEIN R J,ECKERT E R. Film cooling with injection through holes: adiabatic wall temperature downstream of a circular hole[J]. ASME Journal of Engineering for Power,1968,90(2): 384-395.
|
| [3] |
ERIKSEN V L. Filming cooling effectiveness and heat transfer with injection through holes [R]. NASA-CR-72991, 1971.
|
| [4] |
LEYLEK J H,ZERKLE R D. Discrete-jet film cooling: a comparison of computational results with experiments[J]. Journal of Turbomachinery,1994,116(3): 358-368. doi: 10.1115/1.2929422
|
| [5] |
YUEN C H N,MARTINEZ-BOTAS R F. Film cooling characteristics of rows of round holes at various streamwise angles in a crossflow: Part I effectiveness[J]. International Journal of Heat and Mass Transfer,2003,46(2): 221-235. doi: 10.1016/S0017-9310(02)00274-0
|
| [6] |
GOLDSTEIN R J. Film cooling[J]. Advances in Heat Transfer,1971,7(1): 321-379.
|
| [7] |
ZHU H R,XU D C,GUO T,et al. Effects of film cooling hole shape on heat transfer[J]. Heat Transfer Asian Research,2004,33(2): 73-80. doi: 10.1002/htj.20005
|
| [8] |
COLBAN W, GRATTON A, THOLE K A, et al. Heat transfer and film-cooling measurements on a stator vane with fan-shaped cooling holes[R]. ASME GT 2005-68258, 2005.
|
| [9] |
LIU C L, ZHU H R, WU A S, et al. Experimental investigation on the influence of inclination angle on the film cooling performance of diffuser shaped holes[R]. ASME GT 2016-56092, 2016.
|
| [10] |
FU Z Y, ZHU H R, LIU C L, et al. Experimental investigation of dust-pan shaped hole film cooling characteristics on pressure side of a turbine in a linear transonic cascade[R]. ASME GT 2017-63452, 2017.
|
| [11] |
KHAJEHHASANI S, JUBRAN B. Film cooling from novel sister shaped single-holes[R]. ASME GT 2014-25971, 2014.
|
| [12] |
BUNKER R S. A review of shaped hole turbine film cooling technology[J]. ASME Transactions Journal of Heat Transfer,2005,127: 441-453. doi: 10.1115/1.1860562
|
| [13] |
PEDERSEN D,ECKERT E,GOLDSTEIN R. Film cooling with large density differences between the mainstream and the secondary fluid measured by the heat-mass transfer analogy[J]. ASME Transactions Journal of Heat Transfer,1977,99: 620-627. doi: 10.1115/1.3450752
|
| [14] |
SINHA A,BOGARD D,CRAWFORD M. Film cooling effectiveness downstream of a single row of holes with variable density ratio[J]. Journal of Turbomachinery,1991,113(3): 442-449. doi: 10.1115/1.2927894
|
| [15] |
SCHREIVOGEL P, KROSS B, PFITZNER M. Density ratio effects on the flow field emanating from cylindrical effusion and trenched film cooling holes[R]. ASME GT2014-25143, 2014.
|
| [16] |
NARZARY D P,LIU K C,RALLABANDI A P,et al. Influence of coolant density on turbine blade film-cooling using pressure sensitive paint technique[J]. Journal of Turbomachinery,2012,134(3): 031006.1-031006.10.
|
| [17] |
LIU K, YANG S F, HAN J C. Influence of coolant density on turbine blade film-cooling with compound-angle shaped holes[R]. ASME GT2012-69117, 2012.
|
| [18] |
李佳, 任静, 蒋洪德. 密度比和吹风比对透平静叶气膜冷却的影响[J]. 工程热物理学报, 2011, 32(8): 1295-1298.
LI Jia, REN Jing, JIANG Hongde. Effects of density ratio and blowing ratio on the film cooling effectiveness on a turbine vane[J]. Journal of Engineering Thermophysics, 2011, 32(8): 1295-1298. (in Chinese)
|
| [19] |
付仲议,朱惠人,姜茹,等. 高主流湍流度下密度比对涡轮导叶全气膜冷却特性的影响[J]. 推进技术,2019,40(7): 1585-1593. doi: 10.13675/j.cnki.tjjs.180438
FU Zhongyi,ZHU Huiren,JIANG Ru,et al. Effects of density ratio on full film cooling characteristrics of turbine guide vane with high mainstream turbulence[J]. Journal of Propulsion Technology,2019,40(7): 1585-1593. (in Chinese) doi: 10.13675/j.cnki.tjjs.180438
|
| [20] |
姚家旭,徐进,张科,等. 横向间距与密度比对双射流气膜冷却特性影响[J]. 航空动力学报,2018,33(6): 1336-1344.
YAO Jiaxu,XU Jin,ZHANG Ke,et al. Effects of spanwise distance and density ratio on the characteristic of double-jet film-cooling[J]. Journal of Aerospace Power,2018,33(6): 1336-1344. (in Chinese)
|
| [21] |
李冰,朱惠人,许都纯,等. 密度比对涡轮叶片表面气膜冷却换热系数的影响[J]. 航空学报,2007,28(4): 801-805. doi: 10.3321/j.issn:1000-6893.2007.04.006
LI Bing,ZHU Huiren,XU Duchun,et al. Influences of density ratio on film cooling heat transfer of turbine blade surface[J]. Acta Aeronautica et Astronautica Sinica,2007,28(4): 801-805. (in Chinese) doi: 10.3321/j.issn:1000-6893.2007.04.006
|
| [22] |
HAN J C,RALLABANDI A P. Turbine blade film cooling using psp technique[J]. Frontiers in Heat and Mass Transfer,2010,1: 227-237.
|
| [23] |
李佳. 燃气轮机透平气膜冷却机理的实验与理论研究[D]. 北京: 清华大学, 2011.
LI Jia. Experimental and theoretical study of the characteristics of gas turbine film cooling[D]. Beijing: Tsinghua University, 2011. (in Chinese)
|
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