近壁流向涡对多排孔的模拟与实验研究
Simulation and Experimental Study of Near Wall Flow Vortex on Multiple Rows of Holes
DOI: 10.12677/mos.2024.133218, PDF,   
作者: 王佳男：上海理工大学能源与动力工程学院，上海
关键词: 二次流；扇形孔；气膜冷效；涡流强度；Secondary Flow； Fan-Shaped Hole； Film Cooling； Vorticity
摘要: 通过模拟叶栅研究二次流对端区多排扇形孔的影响，并在平板气膜实验台上安装涡流发生器生成流向涡，模拟叶栅端区二次流对壁面气膜冷却的作用，研究流向涡强度对多排扇形孔冷效的影响。结果表明：当涡流强度增加，流向涡对气膜冷效的影响和气膜偏斜程度增加。气膜的叠加效应可以提高第二排和第三排气膜冷却效率，弥补流向涡造成后排气膜冷却效率的降低。进气角会影响叶栅通道涡强度，导致端壁气膜发生变形，冷效分布发生改变。边界层会造成二次流强度减弱，导致压力面侧的气膜冷效得到增强。
Abstract: By simulating the effect of secondary flow on multiple rows of fan-shaped holes in the end wall region of the blade cascade, and installing a vortex generator on a flat film experimental platform to generate flow direction vortices, the effect of secondary flow on wall film cooling in the end region of the blade cascade is simulated, and the influence of flow direction vortex intensity on the cooling efficiency of multiple rows of fan-shaped holes is studied. The results indicate that as the intensity of vortices increases, the influence of flow vortices on film cooling efficiency and the degree of film skewness increase. The superposition effect of gas film can improve the cooling efficiency of the second and third rows, and compensate for the decrease in cooling efficiency of the rear row film caused by flow vortices. The inlet angle can affect the vortex strength of the blade passage, causing deformation of the end wall air film and a change in the distribution of cooling efficiency. The boundary layer can cause a decrease in the intensity of secondary flow, resulting in an enhanced cooling effect of the gas film on the pressure surface side.
文章引用：王佳男. 近壁流向涡对多排孔的模拟与实验研究[J]. 建模与仿真, 2024, 13(3): 2381-2395. https://doi.org/10.12677/mos.2024.133218

参考文献

[1] Bogard, D.G. and Thole, K.A. (2006) Gas Turbine Film Cooling. Journal of Propulsion and Power, 22, 249-270. [Google Scholar] [CrossRef] 
[2] Goldstein, R.J., Eckert, E.R.G. and Burggraf, F. (1974) Effects of Hole Geometry and Density on Three-Dimensional Film Cooling. International Journal of Heat & Mass Transfer, 17, 595-607. [Google Scholar] [CrossRef] 
[3] Bunker, R.S. (2005) A Review of Shaped Hole Turbine Film-Cooling Technology. Journal of Heat Transfer, 127, 441-453. [Google Scholar] [CrossRef] 
[4] Sellers, J.P. (1963) Gaseous Film Cooling with Multiple Injection Stations. AIAA Journal, 1, 2154-2156. [Google Scholar] [CrossRef] 
[5] Afejuku, W.O., Hay, N. and Lampard, D. (1980) The Film Cooling Effectiveness of Double Rows of Holes. Journal of Engineering for Power, 102, 601-606. [Google Scholar] [CrossRef] 
[6] Li, S.T.Z. (2021) The Cooling Performance of Multiple Rows of Film Holes on the Suction Surface of a Turbine Blade under Rotating Conditions. Applied Thermal Engineering, 188, Article ID: 116125. [Google Scholar] [CrossRef] 
[7] Saha, A.K., Acharya, S. and Mahmood, G.I. (2008) Secondary Flow and Upstream Film Cooling in a Linear NGV Cascade in Compressible Flows: Computations and Experiments. 6th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Pretoria, 30 June-2 July 2008.
[8] 苏杭, 浦健, 王位, 等. 一种降低端壁温度的离散气膜孔布置[J]. 工程热物理学报, 2018, 39(12): 2620-2626.
[9] Li, X., Ren, J. and Jiang, H. (2016) Multi-Row Film Cooling Characteristics on a Vane Endwall. International Journal of Heat & Mass Transfer, 92, 23-33. [Google Scholar] [CrossRef] 
[10] Luo, D., Zhang, K., Lei, J., et al. (2020) Analysis of Upstream, Double-Row, Cylindrical Holes on Primary and Secondary Effects of Endwall Flow and Film Cooling. International Journal of Heat and Fluid Flow, 82, Article ID: 108568. [Google Scholar] [CrossRef] 
[11] Tao, Z., Yao, Y., Zhu, P., et al. (2020) Experimental and Numerical Study on Film Cooling Effectiveness of an Annular Cascade Endwall with Different Slot Configuration. International Journal of Thermal Sciences, 158, Article ID: 106517. [Google Scholar] [CrossRef] 
[12] Ligrani, P.M., Ortiz, A., Joseph, S.L., et al. (1989) Effects of Embedded Vortices on Film-Cooled Turbulent Boundary Layers. Journal of Turbomachinery, 111, 71-77. [Google Scholar] [CrossRef] 
[13] Fiebig, M. (1998) Vortices, Generators and Heat Transfer. Chemical Engineering Research and Design, 76(2): 108-123. [Google Scholar] [CrossRef] 
[14] Zhang, C., Wang, J., Luo, X., et al. (2019) Experimentally Measured Effects of Height and Location of the Vortex Generator on Flow and Heat Transfer Characteristics of the Flat-Plate Film Cooling. International Journal of Heat and Mass Transfer, 141, 995-1008. [Google Scholar] [CrossRef] 
[15] Chung, H.K., Na, Y.S. and Lee, J.S. (2009) The Effect of Embedded Vortices on Film Cooling with Compound Angle Orientations. TURBINE-09: Proceedings of International Symposium on Heat Transfer in Gas Turbine Systems, Antalya, 9-14 August 2009, 520-532. [Google Scholar] [CrossRef] 
[16] Zhang, C. and Wang, Z. (2019) Influence of Streamwise Position of Crescent-Shaped Block on Flat-Plate Film Cooling Characteristics. Journal of The Brazilian Society of Mechanical Sciences and Engineering, 41, Article No. 499. [Google Scholar] [CrossRef] 
[17] 崔晓峰, 刘鹏敏, 林翅翔, 戴韧. 流向涡对扇形孔气膜冷却效果影响的实验研究[J]. 动力工程学报, 2021, 41(11): 950-958.
[18] Timko, L.P. (1984) Energy Efficient Engine High Pressure Turbine Component Test Performance Report. NASA-CR-168289.
[19] 管俊俊, 陈榴, 戴韧. 离散孔气膜冷却效果的红外热像测量方法[J]. 热能动力工程, 2021, 36(3): 19-25, 54.
[20] Ethridge, M.I., Cutbirth, J.M. and Bogard, D.G. (2001) Scaling of Performance for Varying Density Ratio Coolants on an Airfoil with Strong Curvature and Pressure Gradient Effects. Journal of Turbomachinery, 123, 231-237. [Google Scholar] [CrossRef] 
[21] Kline, S.J. and Mcclintock, F.A. (1953) Describing Uncertainties in Single-Sample Experiments. Mechanical Engineering, 75, 3-8.
[22] Yao, C.S., Lin, J.C. and Allan, B.G. (2002) Flow-Field Measurement of Device-Induced Embedded Streamwise Vortex on a Flat Plate. 1st Flow Control Conference, St. Louis, 24-26 June 2002, 3162. [Google Scholar] [CrossRef] 

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