Flow Mechanism in Inter Turbine Ducts

  • Zhengping Zou
  • Songtao Wang
  • Huoxing Liu
  • Weihao Zhang
Chapter

Abstract

In the main flow passage of aero gas turbines, the channel connecting the high-pressure stage and low-pressure stage is generally called inter-turbine duct (ITD). The inter-turbine duct mainly serves as a flow passage, which is formed by the casing and hub, and in some occasions, the duct, together with guide vanes, also serves as a supporter and pathway of accessory pipelines. In geometry, the inter-turbine duct is an annular pipe with its two ends having different diameters; the end connecting to the high-pressure turbine is its inlet, and the other end, which connects to the low-pressure turbine, is its outlet.

References

  1. 1.
    Aviation Industry Corporation of China. (2010). Advanced technology analysis of LEAP-X engine [R]. Beijing: China Aviation Industry Development Research Center.Google Scholar
  2. 2.
  3. 3.
    Pratt & Whitney PW1000G. (2008). Jane’s aero engine [M].Google Scholar
  4. 4.
    Kline, S. J., Abbott, D. E., & Fox, R. W. (1958). Optimum design of straight walled diffusers [M]. Stanford: Department of Mechanical Engineering, Stanford University.Google Scholar
  5. 5.
    Zhang, X. F., Hu, S., & Benner, M., et al. (2010). Experimental and numerical study on an inter-turbine duct [R]. ASME Paper IMECE2010-37322.Google Scholar
  6. 6.
    Kuchana, V., Guntu, S., & Srinivasan, B., et al. (2013). Numerical study on inter-turbine ducts with variable curvature distribution [R]. AIAA Paper 2013-3686.Google Scholar
  7. 7.
    Norris, G., & Dominy, R. G. (1997). Diffusion rate influences on inter-turbine diffusers [J]. Journal of Power and Energy, 211(3), 235–242.CrossRefGoogle Scholar
  8. 8.
    Norris, G. (1998). Flows through S-shaped annular, inter-turbine diffusers [D]. Durham University.Google Scholar
  9. 9.
    Norris, G., Dominy, R. G., & Smith, A. D., et al. (1999). Flow stability within a diffusing, annular s-shaped duct [M]. Rolls-Royce PLC.Google Scholar
  10. 10.
    Naylor, E. M. J., Dueñas, C. O., Miller, R. J., et al. (2010). Optimization of nonaxisymmetric endwalls in compressor S-shaped ducts[J]. Journal of Turbomachinery, 132, 011011.CrossRefGoogle Scholar
  11. 11.
    Huoxing, L. (2012). Experimental study on aggressive inter-turbine duct with strut fairings [R]. Beijing: Beihang University.Google Scholar
  12. 12.
    Göttlich, E., Marn, A., & Malzacher, F. J., et al. (2007). Experimental investigation of the flow through an aggressive intermediate turbine duct downstream of a transonic turbine stage [C]. In Proceedings of 7th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics, 2007.Google Scholar
  13. 13.
    Shuzhen, Hu. (2012). Flow mechanism and flow control investigation within inter-turbine duct [D]. Beijing: Graduate School of Chinese Academy of Sciences (Engineering Thermophysics).Google Scholar
  14. 14.
    Bradshaw, P. (1973). Effects of streamline curvature on turbulent flow [R]. Paris (France): Advisory Group for Aerospace Research and Development.Google Scholar
  15. 15.
    Dominy, R. G., & Kirkham, D. A. (1995). The influence of swirl on the performance of inter-turbine diffusers [J]. Rolls Royce PLC-Report-PNR.Google Scholar
  16. 16.
    Dominy, R. G., & Kirkham, D. A. (1996). The influence of blade wakes on the performance of inter-turbine diffusers [J]. Journal of Turbomachinery, 118(2), 347–352.CrossRefGoogle Scholar
  17. 17.
    Wendt, B. J., & Reichert, B. A. (1996). Vortex ingestion in a diffusing S-duct inlet [J]. Journal of Aircraft, 33(1), 149–154.CrossRefGoogle Scholar
  18. 18.
    Miller, R. J., Moss, R. W., & Ainsworth, R. W., et al. (2003). The development of turbine exit flow in a swan-necked inter-stage diffuser [R]. ASME Paper GT2003-38174.Google Scholar
  19. 19.
    Göttlich, E., Marn, A., Pecnik, R., & Malzacher, F. J., et al. (2007). The influence of blade tip gap variation on the flow through an aggressive S-shaped intermediate turbine duct downstream of a transonic turbine stage—Part II: time-averaged results and surface flow [R]. ASME Paper GT2007-28069.Google Scholar
  20. 20.
    Wallin, F., & Eriksson, L. E. (2006). Response surface-based transition duct shape optimization [R]. ASME Paper GT2006-90978.Google Scholar
  21. 21.
    Axelsson, L. U., Osso, C. A., & Cadrecha, D., et al. (2007). Design, performance evaluation and endwall flow structure investigation of an S-shaped intermediate turbine duct [R]. ASME Paper GT2007-27650.Google Scholar
  22. 22.
    Marn, A., Gottlich, E., & Pecnik, R., et al. (2007). The influence of blade tip gap variation on the flow through an aggressive S-shaped intermediate turbine duct downstream a transonic turbine stage: Part I—time-averaged results [R]. ASME Paper GT2007-27405.Google Scholar
  23. 23.
    Sanz, W., Kelterer, M., & Pecnik, R., et al. (2009). Numerical investigation of the effect of tip leakage flow on an aggressive S-shaped intermediate turbine duct [R]. ASME Paper GT2009-59535.Google Scholar
  24. 24.
    Marn, A. (2008). On the aerodynamics of aggressive intermediate turbine ducts for competitive and environmentally friendly jet engines [M]. NA.Google Scholar
  25. 25.
    Sovran, G., & Klomp, E. D. (1967). Experimentally determined optimum geometries for rectilinear diffusers with rectangular, conical or annular cross-section [J]. Fluid Mechanics of Internal Flow, 270–319.Google Scholar
  26. 26.
    Couey, P. T., McKeever, C. W., & Malak, M. F., et al. (2010). Computational study of geometric parameter influence on aggressive inter-turbine duct performance [R]. ASME Paper GT2010-23604.Google Scholar
  27. 27.
    Zhang, X. F., Hu, S., & Benner, M., et al. (2010). Experimental and numerical study on an inter-turbine duct [R]. ASME Paper IMECE 2010-37322.Google Scholar
  28. 28.
    Hu, S., Zhang, X. F., Benner, M., et al. (2010). Geometric optimization of aggressive inter-turbine ducts [R]. ASME Paper IMECE 2010-37323.Google Scholar
  29. 29.
    Zou, Z. (2011). Aerodynamic design for low pressure turbine of a turbofan engine [R]. Beijing: Beihang University.Google Scholar
  30. 30.
    Florea, R., Bertuccioli, L., & Tillman, G. (2007). Flow-control-enabled aggressive turbine transition ducts and engine system analysis [J]. Journal of Propulsion and Power, 23(4), 797–803.CrossRefGoogle Scholar
  31. 31.
    Zhang, Y., Hu, S., & Zhang, X. F., et al. (2012). Flow control in an aggressive inter-turbine duct using low profile vortex generators [R]. ASME Paper GT2012-69951.Google Scholar
  32. 32.
    Du, Q., Wang, P., Gong, J. B., et al. (2012). Design performance evaluation and vortex structure investigation of different S-shaped intermediate turbine ducts [J]. Science China Technological Sciences, 55(12), 3510–3520.CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. and Shanghai Jiao Tong University Press 2018

Authors and Affiliations

  • Zhengping Zou
    • 1
  • Songtao Wang
    • 2
  • Huoxing Liu
    • 1
  • Weihao Zhang
    • 1
  1. 1.Beihang UniversityBeijingChina
  2. 2.Harbin Institute of TechnologyHarbinChina

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