0
TECHNICAL PAPERS

Boundary Layer Development in the BR710 and BR715 LP Turbines—The Implementation of High-Lift and Ultra-High-Lift Concepts

[+] Author and Article Information
R. J. Howell, H. P. Hodson, V. Schulte, R. D. Stieger

Whittle Laboratory, Cambridge University, Cambridge CB3 0DY, United Kingdom

Heinz-Peter Schiffer, F. Haselbach

Rolls-Royce Deutschland, GmbH, Dahlewitz 15827, Germany

N. W. Harvey

Turbine Systems, Rolls-Royce plc, Derby DE24 8BJ, UK

J. Turbomach 124(3), 385-392 (Jul 10, 2002) (8 pages) doi:10.1115/1.1457455 History: Received December 18, 2000; Online July 10, 2002
Copyright © 2002 by ASME
Your Session has timed out. Please sign back in to continue.

References

Wisler, D. C., 1997, “The Technical and Economic Relevance of Understanding Boundary Layer Transition in Gas Turbine Engines,” NASA Minnowbrook II proceedings.
Howell, R. J., Ramesh, O. N., Hodson, H. P., Harvey, N. W., and Schulte, V., 2000, “High Lift and Aft Loaded Profiles for Low Pressure Turbines,” ASME Paper No. 2000-GT-261, accepted for publication in ASME J. Turbomach.
Curtis, E. M., Hodson, H. P., Banieghbal, M. R., Denton, J. D., Howell, R. J., and Harvey, N. W., 1996, “Development of Blade Profiles for Low Pressure Turbine Applications,” ASME J. Turbomach.
Hodson, H. P., 1993, “Modelling Unsteady Transition and Its Effects on Profile Loss,” ASME Paper No. 1989.
Ladwig, M., and Fottner, L., 1993, “Experimental Investigations of the Influence of Incoming Wakes on the Losses of a Linear Turbine Cascade,” ASME Paper No. 93-GT-394.
Schubauer, G. B., and Klebanoff, P. S., 1955, “Contributions on the Mechanics of Boundary Layer Transition,” NACA TN 3489 (1955) and NACA Rep. 1289.
Cumpsty, N. A., Dong, Y., and Li, Y. S., 1995, “Compressor Blade Boundary Layers in the Presence of Wakes,” International Gas Turbine Congress.
Gostelow, J. P., Walker, G. J., Solomon, W. J., Hong, G., and Melwani, N., 1996, “Investigation of the Calmed Region Behind a Turbulent Spot,” ASME Paper No. 96-GT-489.
Schulte V., 1995, “Unsteady Wake Boundary Layer Interaction,” Ph.D. thesis, Cambridge University, Cambridge, UK.
Howell R. J., 1999, “Wake Separation Bubble Interactions in Low Reynolds Number Turbomachinery,” Ph.D. thesis, Cambridge University, Cambridge, UK.
Cobley, K., Coleman, N., Siden, G., and Arndt, N., 1997, ‘Design of the new three stage Low Pressure Turbine for the BMW Rolls-Royce BR715 Turbofan Engine,’ ASME Paper No. 97-GT-419.
Harvey, N. W., Cox, J., Howell, R. J., Hodson, H. P., and Schulte, V., 1998, “The Role of Research in the Aerodynamic Design of an Advanced Low-Pressure Turbine,” 3rd European Conference on Turbomachinery Fluid Mechanics and Thermodynamics, Vol. A, IMechE Conf. Trans.
Haselbach, F., Schiffer, H.-P., Horsman, M., Dressen, S., Harvey, N., and Read, S., 2001, “The Application of Ultra-High Lift Blading in the BR715 LP Turbine,” submitted to the IGTI:
Bellhouse,  B. J., and Schultz,  D. L., 1966, “Determination of Mean and Dynamic Skin Friction, Separation and Transition in Low-Speed Flow With a Thin-Film Heated Element,” J. Fluid Mech. 24, 2.
Hodson, H. P., 1983, “Boundary layer and Loss Measurements on the Rotor of an Axial flow Turbine,” ASME Paper No. 83-GT-4.
Davies, M., and O’Donnell, F., 1998, “Local Measurement of Loss Using Heated Thin Film Sensors,” International Gas Turbine Congress.
Halstead, D. E., Wisler D. C., Okiishi, T. H., Hodson, H. P. and Shin, H., 1995, “Boundary Layer Development in Axial Compressors and Turbines, Part 1: Composite Picture, part 2: Compressors, Part 3: Turbines, Part 4: Computations and Analysis,” presented at the IGTI Comference, Houston, TX.
Banieghbal, M. R., Curtis, E. M., Denton, J. D., Hodson, H. P., Huntsman, I., and Schulte, V., 1995, “Wake Passing in LP Turbines,” Paper No. 23, AGARD conference. Loss Mechanisms and Unsteady Flows in Turbomachines, Derby, May.
Hodson, H. P., Huntsman, I., and Steele A. B., 1993, “An investigation of boundary layer development in a multistage LP turbine,” ASME Paper No. 93-GT-310.
Gostelow, J. P., and Hong G., 1995, “Representation of Boundary-Layer Transition and Turbulent Spots in Temporal and Frequency Domains,” Flow Visualisations VII, Begell House, New York, NY, pp. 218–223.
Arndt, N., 1991, “Blade Row Interaction in a Multistage Low Pressure Turbine,” ASME Paper 91-GT-283.
Ramesh, O. N., 2000, private communication.

Figures

Grahic Jump Location
Comparison of predicted conventional lift. High-lift, and ultra-high-lift Mach number distributions (normalized); after Haselbach et al. 13
Grahic Jump Location
A schematic diagram of wake-induced transition and separated flow transition
Grahic Jump Location
Lift coefficient versus Mach number for a variety of blade profiles, including the high-lift profiles of the BR715 and BR710 demonstrator. The BR715UHL turbine achieves even high lift coefficients. After Haselbach et al. 13.
Grahic Jump Location
NGV2 of the BR715UHL LP turbine showing the hot film array of sensors on the right hand aerofoil
Grahic Jump Location
Time history traces of quasi wall shear stress for the cruise condition of the BR710 LP turbine
Grahic Jump Location
ST diagrams of (a) nondimensional ensemble mean quasiwall shear stress, (b) nondimensional ensemble RMS, and (c) ensemble skew
Grahic Jump Location
Raw hot film data from NGV2 of the BR715 LP turbine
Grahic Jump Location
ST diagrams of (a) nondimensional ensemble mean quasi-wall shear stress, (b) nondimensional ensemble RMS, and (c) ensemble skew. Data is taken from NGV2 of the BR715 LP turbine.
Grahic Jump Location
Variation of time mean (solid lines) and the envelope of the ensemble mean quasi-wall shear stress for NGV3 of the BR715 LP turbine
Grahic Jump Location
ST diagrams of nondimensional ensemble mean quasi-wall shear stress from NGV3 of the BR715 LP turbine; CRUISE conditions
Grahic Jump Location
Ensemble mean data for one revolution of Rotor 2 of the BR715 LP turbine
Grahic Jump Location
Predicted (solid line) and measured (circles) static pressures on NGV3 of the BR715U LP turbine; CRUISE conditions. After Haselbach et al. 13
Grahic Jump Location
Time history of the raw data
Grahic Jump Location
Ensemble mean skew for to sensors showing the change in periodicity of the data as the flow travels downstream
Grahic Jump Location
ST diagrams of (a) nondimensional ensemble mean quasi-wall shear stress, (b) nondimensional ensemble RMS, and (c) ensemble skew. Data is taken from NGV3 of the BR715U LP turbine.
Grahic Jump Location
A comparison of low-speed and high-speed measurements of ensemble quasi-wall shear stress from various profiles

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In