THERMAL SCIENCE

International Scientific Journal

Yaser Taheri

,

Meran Rajabi Zargarabadi

,

Mehdi Jahromi

MULTI-OBJECTIVE OPTIMIZATION OF THREE ROWS OF FILM COOLING HOLES BY GENETIC ALGORITHM

ABSTRACT
Aero-thermal optimization on multi-rows of film cooling over a flat plate has been performed to optimize the inclination angles. Hence three cylindrical holes with injection angles of α, β, and γ have been considered. The cooling hole has a 3 mm diameter and an inclined angle between 25-35°. Numerical simulations were performed at a fixed density ratio of 1.25 and blowing ratio of 0.5. The control-volume method with a SIMPLEC algorithm has been used to solve the steady-state RANS equations with SST k-ω turbulent model. The injection angles of the holes are selected as the design variables to perform the optimization of three rows of film cooling. In order to evaluate the performance of holes arrangement, two objective functions are defined based on aerodynamic losses and adiabatic film cooling effectiveness. The curve fitting method is used to find the optimal point of objective functions. The optimizations have been performed using the genetic algorithm method. Results of the present study show that the best performance of three rows of cooling holes was achieved in inclined angles 25.45, 32.85, and 33.1.
KEYWORDS
film cooling, genetic algorithm, inclined angle, numerical simulation
PAPER SUBMITTED: 2019-08-05
PAPER REVISED: 2020-06-01
PAPER ACCEPTED: 2020-08-22
PUBLISHED ONLINE: 2020-09-06
DOI REFERENCE: https://doi.org/10.2298/TSCI190805230T
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 5, PAGES [3531 - 3541]
REFERENCES
  1. Han, J. C., Dutta, S., Ekkad, S., Gas Turbine Heat Transfer and Cooling Technology. Second ed., Taylor & Francis, New York, 2013.
  2. Goldstein, R. J., Film cooling, Advances in Heat Transfer, 7 (1971), pp. 321-379
  3. Zhou, Y., Zhang, Y., Su, X., Yuan, X., Effect of inlet rotating swirl on endwall film cooling for two representative hole arrangements, Chinese Journal of Aeronautics, 31 (2018), pp. 1095-1108
  4. Xiaokai Sun, Gang Zhao, Peixue Jiang, Wei Peng, Jie, Wang Influence of hole geometry on film cooling effectiveness for a constant exit flow area, Applied Thermal Engineering 130 (2018), pp. 1404-1415
  5. Jun-Hee Kim, Kwang-Yong Kim, Film-cooling performance of converged-inlet hole shapes, International Journal of Thermal Sciences 124 (2018), pp. 196-211
  6. FU Zhongyi, ZHU Huiren, LIU Cunliang, WEI Jiansheng, ZHANG Bolun, Investigation of the Influence of Inclination Angle and Diffusion Angle on the Film Cooling Performance of Chevron Shaped Hole, Journal of Thermal Science, 27 (2018), pp. 580-591
  7. Huang, K., Zhang, J., TAN, X., Shan, Y., Experimental study on film cooling performance of imperfect holes, Chinese Journal of Aeronautics, 31 (2018), pp. 1215-1221
  8. Andrews, G. E., Khalifa, I. M., Asere, A. A., Bazdidi-Tehrani, F., Full coverage effusion film cooling with inclined holes, ASME Paper, (1995), doi:10.1115/95-GT-274
  9. Abdullah, K., Funazaki, K. I., Effects of blowing ratio on multiple angle film cooling holes, AEROTECH IV Conference, Kuala Lumpur, Malaysia, AMM.225.49, 2012
  10. Sarkar, S., Bose, T. K., Numerical simulation of a 2-D jet-cross flow interaction related to film cooling applications: Effects of blowing rate, injection angle and free-stream turbulence, Sadhana 20 (1995), pp. 915- 935
  11. Nasir, H., Ekkad, S. V., Acharya, S., Effect of compound angle injection on flat surface film cooling with large streamwise injection angle, Experimental Thermal and Fluid Science, 25 (2001), pp. 23-29
  12. Shine, S. R., Sunil Kumar, S., Suresh, B. N., Internal wall-jet film cooling with compound angle cylindrical holes, Energy Conversion and Management, 68 (2013), pp. 54-62
  13. Hale, C. A., Plesniak, M. W., Ramadhyani, S., Film cooling effectiveness for short film cooling holes fed by a narrow plenum, ASME Journal of Turbomachinery, 122 (2000), pp. 553-557
  14. Yuen, R. F., Martinez-Botas, C. H. N., Film cooling characteristics of rows of round holes at various streamwise angles in a crossflow, part I: effectiveness, International Journal of Heat and Mass Transfer, 48 (2005), pp. 4995-5016
  15. LI Guangchao, WANG Haofeng, ZHANG Wei, KOU Zhihai, XU Rangshu, Film Cooling Performance of a Row of Dual-fanned Holes at Various Injection Angles, Journal of Thermal Science, 26 (2017), pp. 453-458
  16. Yuzhen Lin, Bo Song, Bin Li and Gaoen Lin, Measured film cooling effectiveness of three multihole patterns, Transactions of ASME, 128 (2006), pp. 192-197
  17. Ai, W., Fletcher, T. H., Computational analysis of conjugate heat transfer and particulate deposition on a high pressure turbine vane, ASME Journal of Turbomachinery, 134 (2012), pp. 573-585
  18. Cun-liang, L., Hui-ren, Z., Zong-wei, Z., Du-chun, X., Experimental investigation on the leading edge film cooling of cylindrical and laid-back holes with different hole pitches, International Journal of Heat and Mass Transfer, 55 (2012), pp. 6832-6845
  19. Lee, K., Kim, K. Y., Surrogate based optimization of a laidback fan-shaped hole for film-cooling, International Journal of Heat Fluid Flow, 32 (2011), pp. 226-238
  20. Johnson, J. J., King, P. I., Clark, J. P., Ooten, M. K., Genetic Algorithm Optimization of a High-Pressure Turbine Vane Pressure Side Film Cooling Array, ASME Journal of Turbomachinery, 136 (2014), 011011
  21. Lee, K. D., Kim, S. M., Kim, K. Y., Multi-objective optimization of a row of film cooling holes using an evolutionary algorithm and surrogate modeling, Numerical Heat Transfer, 63 (2013), pp. 623-641.
  22. Ayoubi, C. E., Hassan, O., Ghaly, W., Hassan, I., Aero-thermal optimization and experimental verification for the discrete film cooling of a turbine airfoil, ASME Turbo Expo 2013: Turbine Technical Conference and Exposition, Conference paper ASME GT2013-95325.
  23. Wang, C. H., Zhang, J., Zhou, J., Optimization of a fan shaped hole to improve film cooling performance by RBF neural network and genetic algorithm, Aerospace Science and Technology, 58 (2016), pp. 18-25
  24. Amirhossein Moeini, Mehran Rajabi Zargarabadi, Genetic algorithm optimization of film cooling effectiveness over a rotating blade, International Journal of Thermal Sciences, 125 (2018), pp. 248-255
  25. Majumdar, S., Rodi, W., Zhu, J., Three-dimensional finite volume method for incompressible flows with complex boundaries, Journal of Fluids Engineering, 114 (1992), pp. 496-503
  26. ANSYS Inc. ANSYS FLUENT user's guide, ANSYS FLUENT 16.0.0, Cononsburg, PA, USA, 2014
  27. Wilcox, D. C., Turbulence Modeling for CFD, DCV Industries, Inc., La Canada, CA, 1993
  28. Yang, X., Badcocky, K. J., Richardsz, B. E., Barakos, G. N., Numerical simulation of film Cooling in hypersonic flows, 36th AIAA thermophysics conference, 2003, pp. 23-26.
  29. Roy, A., Experimental study of gas turbine endwall cooling with endwall contouring under transonic conditions, PhD. thesis Virginia Polytechnic Institute and State University, 2014
  30. Xue, S., Roy, A., Wing, F. N., Ekkad, S. V., A novel transient technique to determine recovery temperature, heat transfer coefficient, and film cooling effectiveness simultaneously in a transonic turbine cascade, Journal of Thermal Science and Engineering Applications, 7 (2015), 011016-1
  31. Wong, T. H., Ireland, P. T., Self, K. P., Film cooling effectiveness downstream of trailing edge slots including cutback surface protuberances, International Journal of Turbomachinery Propulsion and Power, 4 (2016), pp. 1-16
  32. Walters, D. K., Leylek, J. H., A detailed analysis of film-cooling physics: Part I-Streamwise injection with cylindrical holes, ASME Journal of Turbomachinery, 122 (2000), pp. 102-112
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Multi-objective optimization of three rows of film cooling holes by genetic algorithm

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