Research Papers

A New Test Facility to Investigate Film Cooling on a Nonaxisymmetric Contoured Turbine Endwall—Part II: Heat Transfer and Film Cooling Measurements

[+] Author and Article Information
Johannes Kneer

Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Karlsruhe 76131, Germany
e-mail: johannes.kneer@kit.edu

Franz Puetz, Achmed Schulz, Hans-Jörg Bauer

Institut für Thermische Strömungsmaschinen,
Karlsruher Institut für Technologie (KIT),
Karlsruhe 76131, Germany

1Corresponding author.

Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received November 17, 2015; final manuscript received December 23, 2015; published online February 17, 2016. Editor: Kenneth C. Hall.

J. Turbomach 138(7), 071004 (Feb 17, 2016) (8 pages) Paper No: TURBO-15-1266; doi: 10.1115/1.4032364 History: Received November 17, 2015; Revised December 23, 2015

The present work is part of a comprehensive heat transfer and film-cooling study on a locally cooled nonaxisymmetric contoured turbine endwall. A new test rig consisting of a linear cascade of three prismatic vanes at unity scale and exchangeable endwall has been established. The rig is operated in an open-loop configuration at a reduced main gas temperature of 425 K, an exit Mach number of 0.5, and an exit Reynolds number of 1.6 × 106. Air is used both as main gas and coolant; a realistic density ratio is achieved by cooling the coolant below freezing. In the first part of the study, aerodynamic measurements are presented. This paper concentrates on film cooling of the contoured endwall with special emphasis on data acquisition and reduction for the application of the superposition principle of film cooling. The first experimental results from thermographic measurements are discussed.

Copyright © 2016 by ASME
Your Session has timed out. Please sign back in to continue.


Sieverding, C. H. , 1985, “ Recent Progress in the Understanding of Basic Aspects of Secondary Flows in Turbine Blade Passages,” ASME J. Eng. Gas Turbines Power, 107(2), pp. 248–257. [CrossRef]
Langston, L. S. , 2001, “ Secondary Flows in Axial Turbines—A Review,” Ann. N. Y. Acad. Sci., 934(1), pp. 11–26. [CrossRef] [PubMed]
Simon, T. W. , and Piggush, J. D. , 2006, “ Turbine Endwall Aerodynamics and Heat Transfer,” J. Propulsion Power, 22(2), pp. 301–312. [CrossRef]
Wang, H. , Olson, S. , Goldstein, R. , and Eckert, E. R. G. , 1997, “ Flow Visualization in a Linear Turbine Cascade of High Performance Turbine Blades,” ASME J. Turbomach., 119(1), pp. 1–8. [CrossRef]
Lynch, S. P. , and Thole, K. A. , 2008, “ The Effect of Combustor-Turbine Interface Gap Leakage on the Endwall Heat Transfer for a Nozzle Guide Vane,” ASME J. Turbomach., 130(4), p. 041019. [CrossRef]
Goldstein, R. J. , and Spores, R. A. , 1988, “ Turbulent Transport on the Endwall in the Region Between Adjacent Turbine Blades,” ASME J. Heat Transfer, 110(4a), pp. 862–869. [CrossRef]
Lorenz, M. , Schulz, A. , and Bauer, H.-J. , 2010, “ An Experimental Study of Airfoil and Endwall Heat Transfer on a Linear Turbine Blade Cascade—secondary Flow and Surface Roughness Effects,” Heat Transfer Res., 41(8), pp. 867–887. [CrossRef]
Harvey, N. W. , Rose, M. G. , Taylor, M. D. , Shahpar, S. , Hartland, J. , and Gregory-Smith, D. G. , 2000, “ Nonaxisymmetric Turbine End Wall Design—Part I: Three-Dimensional Linear Design System,” ASME J. Turbomach., 122(2), pp. 278–285. [CrossRef]
Schüpbach, P. , Abhari, R. S. , Rose, M. G. , Germain, T. , Raab, I. , and Gier, J. , 2010, “ Improving Efficiency of a High Work Turbine Using Nonaxisymmetric Endwalls—Part II: Time-Resolved Flow Physics,” ASME J. Turbomach., 132(2), p. 021008. [CrossRef]
Laveau, B. , Abhari, R. S. , Crawford, M. E. , and Lutum, E. , 2013, “ High Resolution Heat Transfer Measurement on Flat and Contoured Endwalls in a Linear Cascade,” ASME J. Turbomach., 135(4), p. 041020. [CrossRef]
Lutum, E. , von Wolfersdorf, J. , Weigand, B. , and Semmler, K. , 2000, “ Film Cooling on a Convex Surface With Zero Pressure Gradient Flow,” Int. J. Heat Mass Transfer, 43(16), pp. 2973–2987. [CrossRef]
Schwarz, S. G. , and Goldstein, R. J. , 1989, “ The Two-Dimensional Behavior of Film Cooling Jets on Concave Surfaces,” ASME J. Turbomach., 111(2), pp. 124–130. [CrossRef]
Choe, H. , Kays, W. M. , and Moffat, R. J. , 1974, “ The Superposition Approach to Film-Cooling,” ASME Paper No. 74-WA/GT-27.
Jones, T. V. , 1991, “ Definition of Heat Transfer Coefficients in the Turbine Situation,” Turbomachinery: Latest Developments in a Changing Scene, European Conference, London, Mar. 19–20, Institution of Mechanical Engineers, London, Paper No. C423/046, pp. 201–206.
Gritsch, M. , Baldauf, S. , Martiny, M. , Schulz, A. , and Wittig, S. , 1999, “ The Superposition Approach to Local Heat Transfer Coefficients in High Density Ration Film Cooling Flows,” ASME Paper No. 99-GT-168.
Kneer, J. , Pütz, F. , Schulz, A. , and Bauer, H.-J. , 2014, “ Application of the Superposition Principle of Film Cooling on a Non-Axisymmetric Turbine Endwall,” 15th International Symposium on Rotating Machinery, ISROMAC-15, Honolulu, HI, Feb. 24–28.
Pütz, F. , Kneer, J. , Schulz, A. , and Bauer, H.-J. , 2015, “ A New Test Facility to Investigate Film Cooling on a Non-Axisymmetric Contoured Turbine Endwall—Part I: Introduction and Aerodynamic Measurements,” ASME Paper No. GT2015-42272.
Krückels, J. , Colban, W. , Gritsch, M. , and Schnieder, M. , 2011, “ Validation of a First Vane Platform Cooling Design,” ASME Paper No. GT2011-45252.
Roach, P. , 1987, “ The Generation of Nearly Isotropic Turbulence by Means of Grids,” Int. J. Heat Fluid Flow, 8(2), pp. 82–92. [CrossRef]
Lohrengel, J. , and Todtenhaupt, R. , 1996, “ Wärmeleitfähigkeit, Gesamtemissionsgrade und spektrale Emissionsgrade der Beschichtung Nextel-Velvet-Coating 811-21 (RAL 900 15 tiefschwarz matt),” PTB-Mitt., 106(4), pp. 259–266.
Ochs, M. , Horbach, T. , Schulz, A. , Koch, R. , and Bauer, H.-J. , 2009, “ A Novel Calibration Method for an Infrared Thermography System Applied to Heat Transfer Experiments,” Meas. Sci. Technol., 20(7), p. 075103. [CrossRef]
Ochs, M. , Schulz, A. , and Bauer, H.-J. , 2010, “ High Dynamic Range Infrared Thermography by Pixelwise Radiometric Self Calibration,” Infrared Phys. Technol., 53(2), pp. 112–119. [CrossRef]


Grahic Jump Location
Fig. 1

Secondary vortex system [4]

Grahic Jump Location
Fig. 2

Superposition principle

Grahic Jump Location
Fig. 3

Cut view of the measurement specimen

Grahic Jump Location
Fig. 4

Schematic of the open-loop experimental facility and test section

Grahic Jump Location
Fig. 5

Flow chart of the experimental procedure

Grahic Jump Location
Fig. 6

Position of IR recording with ROI taken of endwall

Grahic Jump Location
Fig. 7

High-resolution temperature map measured with IR thermography

Grahic Jump Location
Fig. 8

Temperature directly upstream, directly downstream, and 25 s/D downstream of FC5 and FC6

Grahic Jump Location
Fig. 9

High-resolution heat flux map calculated from temperature map

Grahic Jump Location
Fig. 10

High-resolution Nusselt number map



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