Browse > Article
http://dx.doi.org/10.6108/KSPE.2015.19.3.029

A Numerical Study on a Supersonic Turbine Performance Characteristics with Different Nozzle-Rotor Axial Gap Spacings  

Jeong, Sooin (Industrial Liaison Innovation Center, Pusan National University)
Choi, Byoung-ik (Rolls-Royce University Technology Center, Pusan National University)
Kim, Kuisoon (Department of Aerospace Engineering, Pusan National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.19, no.3, 2015 , pp. 29-38 More about this Journal
Abstract
In this study, 3-dimensional URANS simulation was performed to analyze the effect of the nozzle-rotor axial gap spacing of a supersonic impulse turbine on turbine performance. The computations were conducted for four different axial gap cases corresponding to about 6%, 10%, 20% and 30% of the blade height, respectively. The results show a good agreement with previous studies and the turbine efficiency decreases drastically in certain range. It is examined that the turbine performance characteristics could change depending on the influence of leading edge shock to the nozzle outlet. It is also found that the entropy rise distributions along the span differ from each other.
Keywords
Turbopump; Supersonic Turbine; Nozzle-rotor Axial Gap; Unsteady Flow; Turbine Performance;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Gronman, A., Turunen-Saaresti, T., Roytta, P. and Jaatinen-Varri, A., "Influence of The Axial Turbine Design Parameters on The Stator-rotor Axial Clearance Losses," Proc. IMechE Part A: J. Power Energy, Vol. 228, No. 5, pp. 482-490, 2014.   DOI
2 Jeong, E., Kang, S., Shin, D., Park, P. and Kim, J., "Experimental Investigation of Turbopump Turbine : Turbine Performance and Effect of Nozzle-Rotor Clearance," Journal of the Korean Society of Propulsion Engineers, Vol. 10, No. 2, pp. 78-86, 2006.
3 Park, P., Jeong, E. and Kim, J., "Numerical Investigation of the Effect of Nozzle-Rotor Axial Clearance on the Supersonic Turbine Performance," 2006 KSPE Spring Conference, Changnyeong-gun, Gyeongsangnam-do, Republic of Korea, pp. 331-336, May 2006.
4 Gronman, A. and Turunen-Saaresti, T., "Design and Off-design Performance of a Supersonic Axial Flow Turbine with Different Stat0r-rotor Axial Gaps," Proc. IMechE Part A: J. Power Energy, Vol. 225, No. 5, pp. 497-503, 2011.   DOI
5 Griffin, L.W. and Dorney, D.J., "Simulations of the Unsteady Flow through the Fastrac Supersonic Turbine," ASME Journal of Turbomachinery, Vol. 122, No. 2, pp. 225-233, 2000.   DOI
6 Gorrell, S.E., Okiisji, T.H. and Copenhaver, W.W., "Stator-Rotor Interactions in a Transonic Compressor Part 1: Effect of Blade-Row Spacing on Performance," ASME Journal of Turbomachinery, Vol. 125, No. 2, pp. 328-335, 2003.   DOI
7 Balje, O.E., Turbomachines: A Guide to Design, Selection, and Theory, John Wiley & Sons Inc., New York, N.Y., U.S.A., June 1981.
8 Jeong, S., Kim, K. and Jeong, E., "Numerical Study of the Nozzle-Rotor Axial Gap Effect on the Supersonic Turbine Performance," 2010 KSPE Fall Conference, Seogwipo-si, Jeju-do, Republic of Korea, pp. 160-163, Nov. 2010.
9 Huzel, D.K. and Huang, D.H., Modern Engineering for Design of Liquid-Propellant Rocket Engines, AIAA Press., Washington, D.C., U.S.A., 1992.
10 Denton, J.D., "Loss Mechanisms in Turbomachines," ASME Journal of Turbomachinery, Vol. 115, Issue 4, pp. 621-656, Oct. 1993.   DOI