Numerical Investigation on the Influence of Hot Streak Temperature Ratio in a High-Pressure Stage of Vaneless Counter-Rotating Turbine

Qingjun, Zhao; Huishe, Wang; Xiaolu, Zhao; Jianzhong, Xu

doi:https://doi.org/10.1155/2007/56097

International Journal of Rotating Machinery

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Review Article | Open Access

Volume 2007 | Article ID 056097 | https://doi.org/10.1155/2007/56097

Numerical Investigation on the Influence of Hot Streak Temperature Ratio in a High-Pressure Stage of Vaneless Counter-Rotating Turbine

Zhao Qingjun,^1,2Wang Huishe,¹Zhao Xiaolu,¹and Xu Jianzhong¹

Academic Editor: Eddie Y.-K. Ng

Received17 Jul 2006

Revised29 Nov 2006

Accepted30 Nov 2006

Published22 Feb 2007

Abstract

The results of recent studies have shown that combustor exit temperature distortion can cause excessive heat load of high-pressure turbine (HPT) rotor blades. The heating of HPT rotor blades can lead to thermal fatigue and degrade turbine performance. In order to explore the influence of hot streak temperature ratio on the temperature distributions of HPT airfoil surface, three-dimensional multiblade row unsteady Navier-Stokes simulations have been performed in a vaneless counter-rotating turbine (VCRT). The hot streak temperature ratios from 1.0 (without hot streak) to 2.4 were used in these numerical simulations, including 1.0, 1.2, 1.6, 2.0, and 2.4 temperature ratios. The hot streak is circular in shape with a diameter equal to 25% of the span. The center of the hot streak is located at 50% of span and 0% of pitch (the leading edge of the HPT stator vane). The predicted results show that the hot streak is relatively unaffected as it migrates through the HPT stator. The hot streak mixes with the vane wake and convects towards the pressure surface (PS) of the HPT rotor when it moves over the vane surface of the HPT stator. The heat load of the HPT rotor increases with the increase of the hot streak temperature ratio. The existence of the inlet temperature distortion induces a thin layer of cooler air in the HPT rotor, which separates the PS of the HPT rotor from the hotter fluid. The numerical results also indicating the migration characteristics of the hot streak in the HPT rotor are predominated by the combined effects of secondary flow and buoyancy. The combined effects that induce the high-temperature fluid migrate towards the hub on the HPT rotor. The effect of the secondary flow on the hotter fluid increases as the hot streak temperature ratio is increased. The influence of buoyancy is directly proportional to the hot streak temperature ratio. The predicted results show that the increase of the hot streak temperature ratio trends to increase the relative Mach number at the HPT rotor outlet, and decrease the relative flow angle from 25% to 75% span at the HPT rotor outlet. In the other region of the HPT outlet, the relative flow angle increases when the hot streak temperature ratio is increased. The predicted results also indicate that the isentropic efficiency of the VCRT decreases with the increase of the hot streak temperature ratio.

References

B. D. Keith, D. K. Basu, and C. Stevens, “Aerodynamic test results of Controlled Pressure Ratio Engine (COPE) dual spool air turbine rotating rig,” ASME Paper 2000-GT-0632, ASME, Munich, Germany, 2000.
View at: Google Scholar
C. W. Haldeman, M. G. Dunn, R. S. Abhari, P. D. Johnson, and X. A. Montesdeoca, “Experimental and computational investigation of the time-averaged and time-resolved pressure loading on a vaneless counter-rotating turbine,” ASME Paper 2000-GT-0445, ASME, Munich, Germany, 2000.
View at: Google Scholar
M. M. Weaver, S. R. Manwaring, R. S. Abhari, M. J. Salay, K. K. Frey, and N. Heidegger, “Forcing function measurements and predictions of a transonic vaneless counter rotating turbine,” ASME Paper 2000-GT-0375, ASME, Munich, Germany, 2000.
View at: Google Scholar
W. T. Wintucky and W. L. Stewart, “Analysis of two-stage counter-rotating turbine efficiencies in terms of work and speed requirements,” Tech. Rep. NACA RM E57L05, NASA, Washington, DC, USA, 1957.
View at: Google Scholar
J. F. Louis, “Axial flow contra-rotating turbines,” ASME Paper 85-GT-218, ASME, Houston, Tex, USA, 1985.
View at: Google Scholar
L. C. Ji, X. B. Quan, L. Wei, and J. Z. Xu, “A vaneless counter-rotating turbine design towards limit of specific work ratio,” ISABE Paper 2001-1062, ISABE, Bangalore, India, 2001.
View at: Google Scholar
H. Wang, Q. Zhao, X. Zhao, and J. Xu, “Unsteady numerical simulation of shock systems in vaneless counter-rotating turbine,” ASME Paper 2005-GT-68212, ASME, Reno-Tahoe, Nev, USA, 2005.
View at: Google Scholar
R. Cai, W. Wu, and G. Fang, “Basic analysis of counter-rotating turbines,” ASME Paper 90-GT-108, ASME, Brussels, Belgium, 1990.
View at: Google Scholar
L. C. Ji, L. Xiang, H. B. Huang, and J. Z. Xu, “The revelations from the research about the vaneless counter-rotating turbine,” ISABE Paper 2003-1040, ISABE, Cleveland, Ohio, USA, 2003.
View at: Google Scholar
M. Munk and R. C. Prim, “On the multiplicity of steady gas flows having the same streamline pattern,” Proceedings of the National Academy of Sciences of the United States of America, vol. 33, no. 5, pp. 137–141, 1947.
View at: Publisher Site | Google Scholar
B. Lakshminarayana and J. H. Horlock, “Generalized expressions for secondary vorticity using intrinsic co-ordinates,” Journal of Fluid Mechanics, vol. 59, no. 1, pp. 97–115, 1973.
View at: Publisher Site | Google Scholar
T. L. Butler, O. P. Sharma, H. D. Joslyn, and R. P. Dring, “Redistribution of an inlet temperature distortion in an axial flow turbine stage,” Journal of Propulsion and Power, vol. 5, no. 1, pp. 64–71, 1989.
View at: Google Scholar
M. M. Rai and R. P. Dring, “Navier-Stokes analyses of the redistribution of inlet temperature distortions in a turbine,” Journal of Propulsion and Power, vol. 6, no. 3, pp. 276–282, 1990.
View at: Google Scholar
R. J. Roback and R. P. Dring, “Hot streaks and phantom cooling in a turbine rotor passage: part 1-separate effects,” ASME Paper 92-GT-75, ASME, Cologne, Germany, 1992.
View at: Google Scholar
D. J. Dorney, R. L. Davis, D. E. Edwards, and N. K. Madavan, “Unsteady analysis of hot streak migration in a turbine stage,” Journal of Propulsion and Power, vol. 8, no. 2, pp. 520–529, 1992.
View at: Google Scholar
D. J. Dorney and R. L. Davis, “Numerical simulation of turbine ‘hot spot’ alleviation using film cooling,” Journal of Propulsion and Power, vol. 9, no. 3, pp. 329–336, 1993.
View at: Google Scholar
D. J. Dorney, “Numerical investigation of hot streak temperature ratio scaling effects,” AIAA Paper 96-0619, AIAA, Reno, Nev, USA, 1996.
View at: Google Scholar
O. P. Sharma, G. F. Pickett, and R. H. Ni, “Assessment of unsteady flows in turbines,” ASME Paper 90-GT-150, Bellevue, Wash, USA, 1990.
View at: Google Scholar
K. L. Gundy-Burlet and D. J. Dorney, “Three-dimensional simulations of hot streak clocking in a 1-1/2 stage turbine,” AIAA Paper 96-2791, 1996.
View at: Google Scholar
T. Shang and A. H. Epstein, “Analysis of hot streak effects on turbine rotor heat load,” Journal of Turbomachinery, vol. 119, no. 3, pp. 544–553, 1997.
View at: Google Scholar
R. P. Dring, M. F. Blair, H. D. Joslyn, G. D. Power, and J. M. Verdon, “The effects of inlet turbulence and rotor/stator interactions on the aerodynamics and heat transfer of a large-scale rotating turbine model,” Final Report NASA-CR-4079, United Technologies Research Center, East Hartford, Conn, USA, 1987.
View at: Google Scholar
O. P. Sharma, G. M. Stetson, W. A. Daniels, E. M. Greitzer, M. F. Blair, and R. P. Dring, “Impact of periodic unsteadiness on performance and heat load in axial flow turbomachines,” Final Report NASA-CR-202319, NASA Lewis Research Center, Cleveland, Ohio, USA, 1997.
View at: Google Scholar
W. J. Whitney, R. G. Stabe, and T. P. Moffitt, “Description of the warm core turbine facility recently installed at NASA Lewis Research Center,” Final Report NASA-TM-81562, NASA Lewis Research Center, Cleveland, Ohio, USA, 1980.
View at: Google Scholar
J. R. Schwab, R. G. Stabe, and W. J. Whitney, “Analytical and experimental study of flow through an axial turbine stage with a nonuniform inlet radial temperature profile,” Final Report NASA-TM-83431, NASA Lewis Research Center, Cleveland, Ohio, USA, 1983.
View at: Google Scholar
R. G. Stabe, W. J. Whitney, and T. P. Moffitt, “Performance of a high-work low aspect ratio turbine tested with a realistic inlet radial temperature profile,” Final Report AIAA-84-1161, NASA Lewis Research Center, Cleveland, Ohio, USA, 1984.
View at: Google Scholar
G. R. Guenette, A fully scaled short duration turbine experiment, Sc.D. thesis.
D. D. Sujudi, An experimental investigation of the effects of inlet circumferential temperature distortion on the aerodynamic performance of a single stage turbine, Master's thesis.
T. Shang, Influence of inlet temperature distortion on turbine heat transfer, Philosophy Doctor's thesis.
T. Shang, G. R. Guenette, A. H. Epstein, and A. P. Saxer, “The influence of inlet temperature distortion on rotor heat transfer in a transonic turbine,” AIAA Paper 95-3042, AIAA, San Diego, Calif, USA, 1995.
View at: Google Scholar
D. J. Dorney, R. L. Davis, and O. R. Sharma, “Two-dimensional inlet temperature profile attenuation in a turbine stage,” ASME Paper 91-GT-406, ASME, Orlando, Fla, USA, 1991.
View at: Google Scholar
S. R. Mathur, N. K. Madavan, and R. G. Rjagopala, “A solution-adaptive hybrid-grid method for the unsteady analysis of turbomachinery,” AIAA Paper 93-3015, AIAA, Orlando, Fla, USA, 1993.
View at: Google Scholar
R. Takahashi and R. H. Ni, “Unsteady Euler analysis of the redistribution of an inlet temperature distortion in a turbine,” AIAA Paper 90-2262, AIAA, Orlando, Fla, USA, 1990.
View at: Google Scholar
R. Takahashi and R. H. Ni, “Unsteady hot streak simulation through a 1-1/2 stage turbine,” AIAA Paper 91-3382, AIAA, Sacramento, Calif, USA, 1991.
View at: Google Scholar
B. Krouthen and M. B. Giles, “Numerical investigation of hot streaks in turbines,” AIAA Paper 88-3015, AIAA, Boston, Mass, USA, 1988.
View at: Google Scholar
S. P. Harasgama, “Combustor exit temperature distortion effects on heat transfer and aerodynamics within a rotating turbine blade passage,” ASME Paper 90-GT-174, ASME, Brussels, Belgium, 1990.
View at: Google Scholar
B. Weigand and S. P. Harasgama, “Computations of a film cooled turbine rotor blade with non-uniform inlet temperature distribution using a three-dimensional viscous procedure,” ASME Paper 94-GT-15, ASME, The Hague, The Netherlands, 1994.
View at: Google Scholar
K. R. Kirtley, M. L. Celestina, and J. J. Adamczyk, “The effect of unsteadiness on the time-mean thermal loads in a turbine stage,” SAE Paper 931375, SAE, Dayton, Ohio, USA, 1993.
View at: Google Scholar
A. P. Saxer and M. B. Giles, “Inlet radial temperature redistribution in a transonic turbine stage,” AIAA Paper 90-1543, AIAA, Orlando, Fla, USA, 1990.
View at: Google Scholar
A. P. Saxer and H. M. Felici, “Numerical analysis of 3-D unsteady hot streak migration and shock interaction in a turbine stage,” ASME Paper 94-GT-76, ASME, Hague, The Netherlands, 1994.
View at: Google Scholar
D. J. Dorney and J. R. Schwab, “Unsteady numerical simulations of radial temperature profile redistribution in a single-stage turbine,” ASME Paper 95-GT-178, ASME, Houston, Tex, USA, 1995.
View at: Google Scholar
“Fine Turbo User Manual 6-2-9,” NUMECA International, 2005.
View at: Google Scholar
A. Arnone and R. Pacciani, “Rotor-stator interaction analysis using the Navier-Stokes equations and a multigrid method,” Journal of Turbomachinery, vol. 118, no. 4, pp. 679–689, 1996.
View at: Google Scholar
A. Jameson, “Time dependent calculations using multigrid with applications to unsteady flows past airfoils and wings,” AIAA Paper 91-1596, AIAA, Honolulu, Hawii, USA, 1991.
View at: Google Scholar
P. Spalart and S. Allmaras, “A one-equation turbulence model for aerodynamic flows,” AIAA Paper 92-0439, AIAA, Reno, Nev, USA, 1992.
View at: Google Scholar
H. S. Wang, J. Z. Xu, X. L. Zhao, and Q. J. Zhao, “Numerical investigation on performance of vaneless counter-rotating turbine,” ISABE Paper 2005-1159, ISABE, Munich, Germany, 2005.
View at: Google Scholar
Q. J. Zhao, H. S. Wang, X. L. Zhao, and J. Z. Xu, “Three-dimensional numerical simulation of 1+1/2 counter-rotating turbine,” Tech. Rep. CSET-2004-042012, Los Angeles, Calif, USA, 2004.
View at: Google Scholar
D. J. Dorney, D. L. Sondak, and P. G. A. Cizmas, “Effects of hot streak/airfoil ratio in a high-subsonic single-stage turbine,” AIAA Paper 99-2384, 1999.
View at: Google Scholar
Q. J. Zhao, H. S. Wang, X. L. Zhao, and J. Z. Xu, “Numerical investigation of 3-D unsteady hot streak migration in a vaneless counter-rotating turbine,” Tech. Rep. CSET-2005-052003, 2005.
View at: Google Scholar
S. L. Dixon, Fluid Mechanics, Thermodynamics of Turbomachinery, Pergamon Press, New York, NY, USA, 3rd edition, 1978.

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Copyright © 2007 Zhao Qingjun et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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