| Citation: | LYU Dong, LIU Yingshi, KONG Xing’ao, et al. Mechanism on thermal-strength comprehensive performance enhancement of novel film hole with rib and ball-shaped dimple[J]. Journal of Aerospace Power, 2026, 41（1）：20240717 doi: 10.13224/j.cnki.jasp.20240717
|
Considering the prevalent contradiction between cooling and strength design of turbine blade film hole, a novel scheme utilizing rib and ball-shaped dimple at the hole inlet and outlet was proposed. To reveal the mechanism on thermal-strength comprehensive performance enhancement, two typical cylindrical and fan-shaped film holes were chosen as benchmarks. Simulation models of all three types with uniform basic structural parameters were also established. Fluid domain only and fluid-thermal coupling numerical simulations were conducted under a typical aero-engine working condition separately. The results indicated that the rib weakened the vortex inside the hole, thus the discharge coefficient increased from 0.75 of the cylindrical ones to 0.79. Especially in heat transfer, it was uncovered that the ball-shaped dimple induced the main flow’s intrusion and so enhanced the surface-attachment of the secondary flow. Thereby the local cooling effectiveness of 0.47 achieved, observably better than 0.41 of the cylindrical ones. The static strength simulations were further conducted following the identical models. The maximus stress was approximately reduced by half, since both the rib and dimple markedly blunted the sharp corners at the orifice edges. Integrating the simulation results of cooling and strength, the lives of the three schemes were estimated based on the creep-rupture curve of DD6 alloy. And the relative value of the novel film hole reached up to 56.6 and 10.7 times of the other ones, respectively, which showed a prominent advantage.
| [1] |
BUNKER R S. Gas turbine heat transfer: ten remaining hot gas path challenges[J]. Journal of Turbomachinery, 2007, 129(2): 193-201.
|
| [2] |
YERANEE K, RAO Yu. A review of recent studies on rotating internal cooling for gas turbine blades[J]. Chinese Journal of Aeronautics, 2021, 34(7): 85-113.
|
| [3] |
曹玉璋, 陶智, 徐国强, 等. 航空发动机传热学[M]. 北京: 北京航空航天大学出版社, 2005.
|
| [4] |
UNNIKRISHNAN U, YANG V. A review of cooling technologies for high temperature rotating components in gas turbine[J]. Propulsion and Power Research, 2022, 11(3): 293-310.
|
| [5] |
刘英实. 复合倾角对涡轮叶片气膜孔综合性能影响研究[D]. 大连: 大连理工大学, 2023. LIU Yingshi. Study on the influence of 3D inclination angle on the multidisciplinary performance of turbine blade film cooling holes[D]. Dalian: Dalian University of Technology, 2023. (in Chinese
LIU Yingshi. Study on the influence of 3D inclination angle on the multidisciplinary performance of turbine blade film cooling holes[D]. Dalian: Dalian University of Technology, 2023. (in Chinese)
|
| [6] |
温志勋, 张冬旭, 张志金, 等. 镍基单晶涡轮冷却叶片气膜孔结构强度[M]. 北京: 科学出版社, 2017. WEN Zhixun, ZHANG Dongxu, ZHANG Zhijin, et al. Structural strength of gas film holes in cooling blades of nickel-based single crystal turbine[M]. Beijing: Science Press, 2017. (in Chinese
WEN Zhixun, ZHANG Dongxu, ZHANG Zhijin, et al. Structural strength of gas film holes in cooling blades of nickel-based single crystal turbine[M]. Beijing: Science Press, 2017. (in Chinese)
|
| [7] |
BUNKER R S. A review of shaped hole turbine film-cooling technology[J]. Journal of Heat Transfer, 2005, 127(4): 441-453.
|
| [8] |
江艳, 李海旺, 谢刚, 等. 高压涡轮导叶压力面异型气膜孔特性[J]. 航空动力学报, 2024, 39(11): 20220963. JIANG Yan, LI Haiwang, XIE Gang, et al. Characteristics of shaped holes on the pressure surface of turbine vane[J]. Journal of Aerospace Power, 2024, 39(11): 20220963. (in Chinese
JIANG Yan, LI Haiwang, XIE Gang, et al. Characteristics of shaped holes on the pressure surface of turbine vane[J]. Journal of Aerospace Power, 2024, 39(11): 20220963. (in Chinese)
|
| [9] |
LU Yiping, DHUNGEL A, EKKAD S V, et al. Effect of trench width and depth on film cooling from cylindrical holes embedded in trenches[J]. Journal of Turbomachinery, 2009, 131(1): 011003.
|
| [10] |
张博伦, 张丽, 朱惠人, 等. 利用双波纹凹槽改善气膜冷却效率的数值研究[J]. 工程热物理学报, 2019, 40(8): 1894-1903. ZHANG Bolun, ZHANG Li, ZHU Huiren, et al. Numerical study on improving film cooling effectiveness with double-wave trench[J]. Journal of Engineering Thermophysics, 2019, 40(8): 1894-1903. (in Chinese
ZHANG Bolun, ZHANG Li, ZHU Huiren, et al. Numerical study on improving film cooling effectiveness with double-wave trench[J]. Journal of Engineering Thermophysics, 2019, 40(8): 1894-1903. (in Chinese)
|
| [11] |
贺业光, 张明, 张德恒, 等. U形凹坑孔气膜冷却特性实验研究[J]. 航空动力学报, 2025, 40(3): 20230266. HE Yeguang, ZHANG Ming, ZHANG Deheng, et al. Experimental study on film cooling characteristics of U-shaped crater holes[J]. Journal of Aerospace Power, 2025, 40(3): 20230266. (in Chinese
HE Yeguang, ZHANG Ming, ZHANG Deheng, et al. Experimental study on film cooling characteristics of U-shaped crater holes[J]. Journal of Aerospace Power, 2025, 40(3): 20230266. (in Chinese)
|
| [12] |
肖阳, 金涛, 何立明, 等. 心形孔气膜冷却特性的数值模拟[J]. 航空动力学报, 2016, 31(6): 1335-1342. XIAO Yang, JIN Tao, HE Liming, et al. Numerical simulation on film cooling characteristics of heart shaped hole[J]. Journal of Aerospace Power, 2016, 31(6): 1335-1342. (in Chinese
XIAO Yang, JIN Tao, HE Liming, et al. Numerical simulation on film cooling characteristics of heart shaped hole[J]. Journal of Aerospace Power, 2016, 31(6): 1335-1342. (in Chinese)
|
| [13] |
KUSTERER K, TEKIN N, WÜLLNER T, et al. Nekomimi film cooling holes configuration under conjugate heat transfer conditions[R]. ASME Paper GT2014-25845, 2014.
|
| [14] |
WECK A, WILKINSON D S. Experimental investigation of void coalescence in metallic sheets containing laser drilled holes[J]. Acta Materialia, 2008, 56(8): 1774-1784.
|
| [15] |
王心美, 王大斐, 李磊. 气膜孔孔形对CMSX-10平板试样蠕变性能的影响[J]. 航空动力学报, 2025, 40(5): 20230592. WANG Xinmei, WANG Dafei, LI Lei. Effect of film cooling hole shape on creep properties of CMSX-10 plate specimens[J]. Journal of Aerospace Power, 2025, 40(5): 20230592. (in Chinese
WANG Xinmei, WANG Dafei, LI Lei. Effect of film cooling hole shape on creep properties of CMSX-10 plate specimens[J]. Journal of Aerospace Power, 2025, 40(5): 20230592. (in Chinese)
|
| [16] |
赵世成, 江荣, 龚浩翔, 等. 异形气膜孔对镍基单晶合金蠕变性能的影响[J]. 航空学报, 2024, 45(19): 429737. ZHAO Shicheng, JIANG Rong, GONG Haoxiang, et al. Effect of film cooling holes on creep properties of nickel-based single crystal superalloy[J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(19): 429737. (in Chinese
ZHAO Shicheng, JIANG Rong, GONG Haoxiang, et al. Effect of film cooling holes on creep properties of nickel-based single crystal superalloy[J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(19): 429737. (in Chinese)
|
| [17] |
EVANS R W, WILSHIRE B. Creep of metals and alloys[M]. Calabasas, US: CRC Press, 1985.
|
| [18] |
WEN Zhixun, LIANG Jianwei, LIU Chenyu, et al. Prediction method for creep life of thin-wall specimen with film cooling holes in Ni-based single-crystal superalloy[J]. International Journal of Mechanical Sciences, 2018, 141: 276-289.
|
| [19] |
吕东, 刘英实, 韦文涛, 等. 在气膜孔边采用半球形凹坑和圆滑凸肋结构的涡轮叶片: CN117823233A[P]. 2024-04-05. LYU Dong, LIU Yingshi, WEI Wentao, et al. Turbine blade adopting semispherical pit and smooth convex rib structure on air film hole edge: CN117823233A[P]. 2024-04-05. (in Chinese
LYU Dong, LIU Yingshi, WEI Wentao, et al. Turbine blade adopting semispherical pit and smooth convex rib structure on air film hole edge: CN117823233A[P]. 2024-04-05. (in Chinese)
|
| [20] |
王德新, 盛文娟, 徐斌, 等. 叶片气膜孔簸箕槽电火花加工工艺[C]// 第15届全国特种加工学术会议论文集(上). 南京: 中国机械工程学会特种加工分会, 2013: 157-161. WANG Dexin, SHENG Wenjuan, XU Bin, et, al. Study on technology of the EDM to the dustpan slots of the gas holes on blade. [C]// Proceedings of 15th National Conference on Nontraditional Machining (Volume 1). Nanjing: Nontraditional Machining Technology Committee of Chinese Mechanical Engineering Society, 2013: 157-161. (in Chinese
WANG Dexin, SHENG Wenjuan, XU Bin, et, al. Study on technology of the EDM to the dustpan slots of the gas holes on blade. [C]// Proceedings of 15th National Conference on Nontraditional Machining (Volume 1). Nanjing: Nontraditional Machining Technology Committee of Chinese Mechanical Engineering Society, 2013: 157-161. (in Chinese)
|
| [21] |
王武辉, 徐正扬, 耿天宇. 涡轮叶片簸箕形气膜孔电解加工试验研究[J]. 电加工与模具, 2023(4): 36-39. WANG Wuhui, XU Zhengyang, GENG Tianyu. Experimental study on ECM of dust pan-shaped film cooling holes of turbine blades[J]. Electromachining & Mould, 2023(4): 36-39. (in Chinese
WANG Wuhui, XU Zhengyang, GENG Tianyu. Experimental study on ECM of dust pan-shaped film cooling holes of turbine blades[J]. Electromachining & Mould, 2023(4): 36-39. (in Chinese)
|
| [22] |
中国金属学会高温材料分会编. 中国高温合金手册[M]. 北京: 中国标准出版社, 2012.
|
| [23] |
WANG Jin, TIAN Ke, LUO Jing, et al. Effect of hole configurations on film cooling performance[J]. Numerical Heat Transfer, Part A: Applications, 2019, 75(11): 725-738.
|
| [24] |
GRÄF L, KLEISER L. Film cooling using antikidney vortex pairs: effect of blowing conditions and yaw angle on cooling and losses[J]. Journal of Turbomachinery, 2014, 136(1): 011008. doi: 10.1115/1.4024648
|
| [25] |
邵绪强, 刘艺林, 杨艳, 等. 流体的旋涡特征提取方法综述[J]. 图学学报, 2020, 41(5): 687-701. SHAO Xuqiang, LIU Yilin, YANG Yan, et al. A review of vortex feature extraction methods for fluid[J]. Journal of Graphics, 2020, 41(5): 687-701. (in Chinese
SHAO Xuqiang, LIU Yilin, YANG Yan, et al. A review of vortex feature extraction methods for fluid[J]. Journal of Graphics, 2020, 41(5): 687-701. (in Chinese)
|
| [26] |
PULLAN G, DENTON J, CURTIS E. Improving the performance of a turbine with low aspect ratio stators by aft-loading[J]. Journal of Turbomachinery, 2006, 128(3): 492-499.
|
| [27] |
YAO Xin, PEI Yang, GE Y, et al. Numerical study on damage characteristics of composite propeller under blast impact load[M]//2023 Asia-Pacific International Symposium on Aerospace Technology (APISAT 2023) Proceedings. Singapore: Springer Nature Singapore, 2024: 1781-1792.
|
| [28] |
航空工业部科学技术委员会. 应力集中系数手册[M]. 北京: 高等教育出版社, 1990.
|
| [29] |
李昊燃, 陈健. 航空发动机涡轮部件蠕变失效风险分析[J]. 机械设计与制造, 2022(9): 111-115, 120. LI Haoran, CHEN Jian. Creep failure risk analysis of aircraft engine turbine components[J]. Machinery Design & Manufacture, 2022(9): 111-115, 120. (in Chinese doi: 10.3969/j.issn.1001-3997.2022.09.023
LI Haoran, CHEN Jian. Creep failure risk analysis of aircraft engine turbine components[J]. Machinery Design & Manufacture, 2022(9): 111-115, 120. (in Chinese) doi: 10.3969/j.issn.1001-3997.2022.09.023
|
DownLoad:
