| Citation: | LIU Yusong, ZHU Hua, YAN Biao, et al. Effects of convergent impingement holes on leading-edge impingement cooling performance in stationary vanes[J]. Journal of Aerospace Power, 2025, 40（8）：20230047 doi: 10.13224/j.cnki.jasp.20230047
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To investigate the parametric impact of the arrangement of the convergent impingement holes on the flow and heat transfer characteristics of the vane leading edge impingement cooling structure, three types of cooling structures with different convergent impingement holes arrangement based on 12 standard impingement holes were established. ANSYS CFX was used to stimulate the flow and heat transfer characteristics of the four impingement models. The thermal performance factors of the four structures were also compared and analyzed in detail. The results showed that the convergent impingement holes can reduce the flow resistance of cooling air and the coolant flow resistance with more convergent impingement holes was smaller. The cooling structure with 6 convergent impingement holes arranged downstream showed the best heat transfer and the most uniform heat transfer distribution of the target surface. The cooling structure with alternant arrangement of standard impingement holes and convergent impingement holes showed the worst heat transfer uniformity on the target surface. The three new structures can all significantly increase the thermal performance factor. Compared with the standard structure, the thermal performance factor of the cooling structure with only 6 convergent impingement holes arranged downstream increased by 20.07%; the thermal performance factor of the cooling structure with all convergent impingement holes increased by 21.72%; the thermal performance factor of the alternate arranged structure increased by 12.11%.
| [1] |
HAN J C. Fundamental gas turbine heat transfer[J]. Journal of Thermal Science and Engineering Applications, 2013, 5(2): 021007. doi: 10.1115/1.4023826
|
| [2] |
LIAO Gaoliang, WANG Xinjun, LI Jun, et al. A numerical comparison of thermal performance of in-line pin–fins in a wedge duct with three kinds of coolant[J]. International Journal of Heat and Mass Transfer, 2014, 77: 1033-1042. doi: 10.1016/j.ijheatmasstransfer.2014.06.010
|
| [3] |
杨力. 基于冲击的燃气轮机透平叶片冷却结构研究[D]. 北京: 清华大学, 2015. YANG Li. Study on cooling structure of gas turbine blades based on impact[D]. Beijing: Tsinghua University, 2015. (in Chinese
YANG Li. Study on cooling structure of gas turbine blades based on impact[D]. Beijing: Tsinghua University, 2015. (in Chinese)
|
| [4] |
YANG G, CHOI M, LEE J S. An experimental study of slot jet impingement cooling on concave surface: effects of nozzle configuration and curvature[J]. International Journal of Heat and Mass Transfer, 1999, 42(12): 2199-2209. doi: 10.1016/S0017-9310(98)00337-8
|
| [5] |
TABAKOFF W, CLEVENGER W. Gas turbine blade heat transfer augmentation by impingement of air jets having various configurations[J]. Journal of Engineering for Power, 1972, 94(1): 51-58. doi: 10.1115/1.3445620
|
| [6] |
GULATI P, KATTI V, PRABHU S V. Influence of the shape of the nozzle on local heat transfer distribution between smooth flat surface and impinging air jet[J]. International Journal of Thermal Sciences, 2009, 48(3): 602-617. doi: 10.1016/j.ijthermalsci.2008.05.002
|
| [7] |
孙启超, 常海萍, 胡晓东. 有溢流的单排孔冲击凹面流动传热特性研究[J]. 工程热物理学报, 2013, 34(2): 352-355. SUN Qichao, CHANG Haiping, HU Xiaodong. Flow and heat transfer characteristics about impact on the concave of the single-rowed impact hole with overflow[J]. Journal of Engineering Thermophysics, 2013, 34(2): 352-355. (in Chinese
SUN Qichao, CHANG Haiping, HU Xiaodong. Flow and heat transfer characteristics about impact on the concave of the single-rowed impact hole with overflow[J]. Journal of Engineering Thermophysics, 2013, 34(2): 352-355. (in Chinese)
|
| [8] |
YAMANE Y, YAMAMOTO M, HONAMI S. Effect of cross-shaped circular jet array on impingement heat transfer[C]//ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. Copenhagen, Denmark: American Society of Mechanical Engineers, 2012: 89-97.
|
| [9] |
YAMANE Y, YAMAMOTO M, MOTOSUKE M, et al. Effect of jet shape of square array of multi-impinging jets on heat transfer[C]//ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. Copenhagen, Denmark: American Society of Mechanical Engineers, 2013: V03AT12A014.
|
| [10] |
TASLIM M E, PAN Y, BAKHTARI K. Experimental racetrack shaped jet impingement on a roughened leading-edge wall with film holes[C]//ASME Turbo Expo 2002: Power for Land, Sea, and Air, Amsterdam. Amsterdam, The Netherlands: American Society of Mechanical Engineers, 2002: 897-906.
|
| [11] |
TASLIM M E, BETHKA D. Experimental and numerical impingement heat transfer in an airfoil leading-edge cooling channel with cross-flow[J]. Journal of Turbomachinery, 2009, 131(1): 011021. doi: 10.1115/1.2950058
|
| [12] |
ELEBIARY K, TASLIM M E. Experimental/numerical crossover jet impingement in an airfoil leading-edge cooling channel[J]. Journal of Turbomachinery, 2013, 135(1): 011037. doi: 10.1115/1.4006420
|
| [13] |
JORDAN C N, WRIGHT L M, CRITES D C. Impingement heat transfer on a cylindrical, concave surface with varying jet geometries[C]//ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. Copenhagen, Denmark : American Society of Mechanical Engineers, 2012: 335-346.
|
| [14] |
JORDAN C N, ELSTON C A, WRIGHT L M, et al. Leading edge impingement with racetrack shaped jets and varying inlet supply conditions[C]//ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. San Antonio, US: American Society of Mechanical Engineers, 2013: V03AT12A020.
|
| [15] |
汪胜, 韩东, 周天昊, 等. 横流对振荡射流冲击冷却特性影响的数值研究[J]. 动力工程学报, 2022, 42(2): 115-121. WANG Sheng, HAN Dong, ZHOU Tianhao, et al. Numerical study on the effects of cross flow on the cooling characteristics of oscillating impingement jets[J]. Journal of Chinese Society of Power Engineering, 2022, 42(2): 115-121. (in Chinese
WANG Sheng, HAN Dong, ZHOU Tianhao, et al. Numerical study on the effects of cross flow on the cooling characteristics of oscillating impingement jets[J]. Journal of Chinese Society of Power Engineering, 2022, 42(2): 115-121. (in Chinese)
|
| [16] |
吴航, 杨星, 赵强, 等. 延伸冲击孔冲击冷却流动与换热特性的数值研究[J]. 推进技术, 2022, 43(10): 210041. WU Hang, YANG Xing, ZHAO Qiang, et al. Numerical study on flow and heat transfer characteristics of impingement cooling with extended jet holes[J]. Journal of Propulsion Technology, 2022, 43(10): 210041. (in Chinese
WU Hang, YANG Xing, ZHAO Qiang, et al. Numerical study on flow and heat transfer characteristics of impingement cooling with extended jet holes[J]. Journal of Propulsion Technology, 2022, 43(10): 210041. (in Chinese)
|
| [17] |
BUNKER R S, METZGER D E. Local heat transfer in internally cooled turbine airfoil leading edge regions: Part Ⅰ impingement cooling without film coolant extraction[J]. Journal of Turbomachinery, 1990, 112(3): 451-458. doi: 10.1115/1.2927680
|
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