Large Eddy Simulation of the E?ects of Plasma Actuation Strength on Film Cooling Efficiency

LI Guozhan(李国占); CHEN Fu(陈浮); LI Linxi(李林熙); SONG Yanping(宋彦萍)

doi:10.1088/1009-0630/18/11/08

Plasma Science and Technology > 2016 > 18(11): 1101-1109. > DOI: 10.1088/1009-0630/18/11/08

LI Guozhan(李国占), CHEN Fu(陈浮), LI Linxi(李林熙), SONG Yanping(宋彦萍). Large Eddy Simulation of the E?ects of Plasma Actuation Strength on Film Cooling Efficiency[J]. Plasma Science and Technology, 2016, 18(11): 1101-1109. DOI: 10.1088/1009-0630/18/11/08

Citation:

PDF (656 KB)

Large Eddy Simulation of the E?ects of Plasma Actuation Strength on Film Cooling Efficiency

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

More Information

Received Date: December 20, 2015

Graphical Abstract

Abstract

Abstract

In this article, numerical investigation of the e?ects of di?erent plasma actuation strengths on the film cooling flow characteristics has been conducted using large eddy simulation (LES). For this numerical research, the plasma actuator is placed downstream of the trailing edge of the film cooling hole and a phenomenological model is employed to provide the electric field generated by it, resulting in the body forces. Our results show that as the plasma actuation strength grows larger, under the downward e?ect of the plasma actuation, the jet trajectory near the cooling hole stays closer to the wall and the recirculation region observably reduces in size. Meanwhile, the momentum injection e?ect of the plasma actuation also actively alters the distributions of the velocity components downstream of the cooling hole. Consequently, the influence of the plasma actuation strength on the Reynolds stress downstream of the cooling hole is remarkable. Furthermore, the plasma actuation weakens the strength of the kidney shaped vortex and prevents the jet from lifting o? the wall. Therefore, with the increase of the strength of the plasma actuation, the coolant core stays closer to the wall and tends to split into two distinct regions. So the centerline film cooling e?ciency is enhanced, and it is increased by 55% at most when the plasma actuation strength is 10.
- large eddy simulation,
- plasma actuation strength,
- film cooling,
- flow characteristic

FullText(HTML)

References (1)

References

1 Guo X, Schr¨oder W, Meinke M. 2006, Computers and Fluids, 35: 587 2 Sakai E, Takahashi T, Watanabe H. 2014,International Journal of Heat and Mass Transfer, 69:300 3 Goldstein R J, Eckert E R G, Burggraf F. 1974,International Journal of Heat and Mass Transfer, 17:595 4 Renze P, Schr¨oder W, Meinke M. 2007, Hole Shape Comparison for Film Cooling Flows Using Large Eddy Simulations. 45th AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada 5 Lu Y P, Dhungel A, Ekkad S V, et al. 2009, Journal of Turbomachinery, 131: 011003 6 Li Y K, Zhang J Z, Yao Y. 2006, Journal of Aerospace Power, 21: 83 (in Chinese) 7 Kusterer K, Bohn D, Sugimoto T, et al. 2007, Journal of Turbomachinery, 129: 809 8 Heidmann J D, Ekkad S. 2007, A Novel Anti-vortex Turbine Film Cooling Hole Concept. ASME Turbo Expo 2007: Power for Land, Sea, and Air, Montreal,Canada 9 Moreau E. 2007, Journal of Physics D: Applied Physics, 40: 605 10 Corke T C, Post M L, Orlov D M. 2009, Journal of Experiments in Fluids, 46: 1 11 Roy S, Wang C C. 2008, Journal of Applied Physics,92: 231501 12 Wang C C, Roy S. 2008, Journal of Applied Physics,104: 073305 13 Roy S, Wang C C. 2013, Jounal of Thermophysics and Heat Transfer, 27: 489 14 Dai S G, He L M, Ding W, et al. 2013, Journal of Aerospace Power, 28: 1982 (in Chinese) 15 Yu J L, He L M, Zhu Y F, et al. 2013, Heat Mass Transfer, 49: 897 16 Acharya S, Tyagi M, Hoda A. 2001, Annals of the New York Academy of Sciences, 934: 110 17 Shyy W, Jayaraman B, Andersson A. 2002, Journal of Applied Physics, 92: 6434 18 Zhang P F, Liu A B, Wang J J. 2010, Journal of Science China: Technological Sciences, 53: 2772 19 Shur M L, Spalart P R, Strelets M K, et al. 2008,Internal Journal of Heat Fluid Flow, 29: 1638 20 Smagorinsky J. 1963, Monthly Weather Review, 91:99 21 Liu Z F, Wang L Z, Zhang M M. 2014, Study of flow characteristic induced by saw tooth plasma actuator.Academic Conference of the Chinese Academy of Engineering Physics, Xi’an, China (in Chinese) 22 Sinha A K, Bogard D G, Crawford M E. 1991, Journal of Turbomachinery, 113: 442 23 Andreopoulos J, Rodi W. 1984, Journal of Fluid Mechanics, 138: 93

Cited By