Research Papers: Gas Turbines: Turbomachinery

Reconciling Compressor Performance Differences for Varying Ambient Inlet Conditions

[+] Author and Article Information
Natalie R. Smith

Department of Aeronautics and Astronautics,
Purdue University,
500 Allison Road,
West Lafayette, IN 47907
e-mail: smith773@purdue.edu

Reid A. Berdanier

Department of Mechanical Engineering,
Purdue University,
500 Allison Road,
West Lafayette, IN 47907
e-mail: rberdani@purdue.edu

John C. Fabian

Department of Mechanical Engineering,
Purdue University,
500 Allison Road,
West Lafayette, IN 47907
e-mail: fabian@purdue.edu

Nicole L. Key

Associate Professor
Department of Mechanical Engineering,
Purdue University,
500 Allison Road,
West Lafayette, IN 47907
e-mail: nkey@purdue.edu

Contributed by the Turbomachinery Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received March 21, 2015; final manuscript received April 28, 2015; published online June 2, 2015. Editor: David Wisler.

J. Eng. Gas Turbines Power 137(12), 122603 (Jun 02, 2015) (9 pages) Paper No: GTP-15-1103; doi: 10.1115/1.4030518 History: Received March 21, 2015

Careful experimental measurements can capture small changes in compressor total pressure ratio (TPR), which arise with subtle changes in an experiment's configuration. Research facilities that use unconditioned atmospheric air must account for changes in ambient compressor inlet conditions to establish repeatable performance maps. A unique dataset from a three-stage axial compressor has been acquired over the duration of 12 months in the Midwest U.S., where ambient conditions change significantly. The trends show a difference in compressor TPR measured on a cold day versus a warm day despite correcting inlet conditions to sea level standard day. To reconcile these differences, this paper explores correcting the compressor exit thermodynamic state, Reynolds number effects, and variations in rotor tip clearance (TC) as a result of differences in thermal growth.

Copyright © 2015 by ASME
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Cumpsty, N. A. , 2004, Compressor Aerodynamics, Krieger, Malabar, FL, pp. 11–21.
Dixon, S. L. , 2005, Fluid Mechanics and Thermodynamics of Turbomachinery, Elsevier, Burlington, MA, pp. 16–20.
Fishbeyn, B. D. , and Pervyshin, N. V. , 1970, “Determination of the Effect of Atmospheric Humidity on the Characteristics of a Turbofan Engine,” Foreign Technology Division, Wright-Patterson AFB, OH, Paper No. FTD-HT-23-290-68.
Bird, J. , and Grabe, W. , 1991, “Humidity Effects on Gas Turbine Performance,” International Gas Turbine and Aeroengine Congress and Exposition, Orlando, FL, June 3–6, ASME Paper No. 91-GT-329.
Berdanier, R. A. , Smith, N. R. , Fabian, J. C. , and Key, N. L. , 2015, “Humidity Effects on Experimental Compressor Performance—Corrected Conditions for Real Gases,” ASME J. Turbomach., 137(3), p. 031011 . [CrossRef]
American Society of Mechanical Engineers, 1997, “Performance Test Code on Compressors and Exhausters,” ASME, New York, ASME Standard No. PTC 10.
Wiesner, F. J. , 1979, “A New Appraisal of Reynolds Number Effects on Centrifugal Compressor Performance,” ASME J. Eng. Power, 101(3), pp. 384–392. [CrossRef]
Strub, R. A. , Bonciani, L. , Borer, C. J. , Casey, M. V. , Cole, S. L. , Cook, B. B. , Kotzur, J. , Simon, H. , and Strite, M. A. , 1987, “Influence of the Reynolds Number on the Performance of Centrifugal Compressors,” ASME J. Turbomach., 109(4), pp. 541–544. [CrossRef]
Carter, A. D. S. , Moss, C. E. , Green, G. R. , and Annear, G. G. , 1957, “The Effect of Reynolds Number on the Performance of a Single-Stage Compressor,” Ministry of Aviation, Aeronautical Research Council, London, Reports and Memoranda No. 3184.
Wassel, A. B. , 1968, “Reynolds Number Effects in Axial Compressors,” ASME J. Eng. Power, 90(2), pp. 149–156 . [CrossRef]
Schäffler, A. , 1980, “Experimental and Analytical Investigation of the Effects of Reynolds Number and Blade Surface Roughness on Multistage Axial Flow Compressors,” ASME J. Eng. Power, 102(1), pp. 5–12. [CrossRef]
Walsh, P. P. , and Fletcher, P. , 2008, Gas Turbine Performance, Blackwell Science, Oxford, UK, p. 149, 168, 407.
Shepherd, D. G. , 1956, Principles of Turbomachinery, Macmillan, New York, pp. 39–47.
Jefferson, J. L. , and Turner, R. C. , 1958, “Some Shrouding and Tip Clearance Effects in Axial Flow Compressors,” Int. Shipbuild. Prog., 5(42), pp. 78–101.
Wisler, D. C. , 1985, “Loss Reduction in Axial-Flow Compressors Through Low-Speed Model Testing,” ASME J. Eng. Gas. Turbine Power, 107(2), pp. 354–363. [CrossRef]
Freeman, C. , 1985, “Effect of Tip Clearance Flow on Compressor Stability and Engine Performance” (VKI Lecture Series 1985-05), von Karman Institute, Rhode-St-Genese, Belgium.
Tschirner, T. , Johann, E. , Müller, R. , and Vogeler, K. , 2006, “Effects of 3D Aerofoil Tip Clearance Variation on a 4-Stage Low Speed Compressor,” ASME Paper No. GT2006-90902.
Wright, J. D. , 2010, “Properties for Accurate Gas Flow Measurements,” 15th Flow Measurement Conference (FLOMEKO), Taipei, Taiwan, Oct. 13–15.
Lemmon, E. W. , Huber, M. L. , and McLinden, M. O. , 2013, “NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties—refprop, Version 9.1,” National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, MD.
Wexler, A. , 1976, “Vapor Pressure Formulation for Water in Range 0 to 100 °C. A Revision,” J. Res. Natl. Bur. Stand., 80A(5), pp. 775–785. [CrossRef]
Wexler, A. , 1977, “Vapor Pressure Formulation for Ice,” J. Res. Natl. Bur. Stand., 81A(1), pp. 5–20. [CrossRef]
WMO, 1966, International Meteorological Tables, S. Letestu , ed., World Meterological Organization, Geneva, Report No. 188 TP 94, Table 4.3, pp. 3–4.
Smith, L. H. , 1964, “Some Comments on Reynolds Number,” ASME J. Eng. Power, 86(3), pp. 225–226. [CrossRef]
American Society of Mechanical Engineers, 2004, “Flow Measurement,” ASME, New York, ASME Standard No. PTC 19.5, pp. 19–27.
Berdanier, R. A. , and Key, N. L. , 2015, “Experimental Investigation of Factors Influencing Operating Rotor Tip Clearance in Multistage Compressors,” Int. J. Rotating Mach., 2015, p. 146272 . [CrossRef]
Johnsen, I. A. , and Bullock, R. O. , eds., 1965, Aerodynamic Design of Axial-Flow Compressors, NASA, Washington, DC, p. 206.


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Fig. 1

Effects of ambient pressure, temperature, and RH changes on the enthalpy, density, and ratio of specific heats of air

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Fig. 7

TPR variations with ambient temperature for three nominal TCs: (a) 1.5% TC, (b) 3% TC, and (c) 4% TC

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Fig. 3

Difference in TPR between a hot and cold day at 3% and 4% TC

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Fig. 2

Compressor flowpath including station numbering scheme

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Fig. 4

Percent difference change in TPR with density and work coefficient correction on a hot and cold day

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Fig. 5

Reynolds number index on a hot and cold day

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Fig. 6

Reynolds number fluctuations with ambient inlet conditions: (a) temperature, (b) RH, and (c) pressure

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Fig. 8

Total pressure wakes at 80% span for 3% TC at near-stall loading conditions, hot and cold days

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Fig. 9

Radial total pressure profiles from traversed data downstream of each row for a cold and hot day for the 3% TC

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Fig. 10

TPR trends with measured rotor 1 TC at a near-stall operating condition

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Fig. 11

Radial profiles for three nominal TCs on a hot and cold day



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