An extensive performance investigation has been conducted on a radial turbine with three different vaneless volutes and three corresponding vaned stators. Previously published comparisons have been based on turbines with unmatched flow rates, meaning that the impact of stator losses was not isolated from rotor and exit losses. Each vaned stator configuration tested in this investigation matched the flow rate of the corresponding vaneless volute to within 1%. The volutes and the vaned stators were all machined in order to achieve high quality and comparable surface finishes. At all operating conditions, the vaneless volutes were shown to deliver a significant efficiency advantage over the vaned stators. However, the vaneless volute turbines did not demonstrate any greater tolerance for off-design operating conditions than the vaned stator configurations. Full performance data are presented for the six different turbine configurations tested and a one-dimensional turbine performance model is evaluated as a means of predicting and extrapolating turbine performance.
Issue Section:
Technical Papers
1.
Bhinder
, F. S.
, 1969, “Investigation of Flow in the Nozzle-Less Spiral Casing of a Radial Inward-Flow Gas Turbine
,” Proc. Inst. Mech. Eng.
0020-3483, 184
, pp. 66
–71
.2.
Chapple
, P. M.
, Flynn
, P. F.
, and Mulloy
, J. M.
, 1980, “Aerodynamic Design of Fixed and Variable Geometry Nozzleless Turbine Casings
,” Trans. ASME: J. Eng. Gas Turbines Power
0742-4795, 102
, pp. 141
–147
.3.
Hussain
, M.
, and Bhinder
, F. S.
, 1984, “Experimental Study of The Performance of a Nozzleless Volute Casing for Turbocharger Turbines
,” SAE Paper No. 840571.4.
Kastner
, L. J.
, and Bhinder
, F. S.
, 1975, “A Method for Predicting the Performance of a Centripetal Gas Turbine Fitted With a Nozzle-less Volute Casing
,” ASME Gas Turbine Conference, ASME Paper No. 75-GT-65.5.
Chen
, H.
, 1996, “Design Methods of Volute Casings for Turbocharger Turbine Applications
,” Proc. Inst. Mech. Eng., Part A
0957-6509, 210
, pp. 149
–156
.6.
Whitfield
, A.
, and Mohd Noor
, A. B.
, 1994, “Design and Performance of Vaneless Volutes for Radial Inflow Turbines. 1. Non-dimensional Conceptual Design Considerations
,” Proc. Inst. Mech. Eng., Part A
0957-6509, 208
, pp. 199
–211
.7.
Whitfield
, A.
, MacGregor
, S. A.
, and Mohd Noor
, A. B.
, 1994, “Design and Performance of Vaneless Volutes for Radial Inflow Turbines. 2. Experimental Investigation of the Mean Line Performance-Assessment of Empirical Design Parameters
,” Proc. Inst. Mech. Eng., Part A
0957-6509, 208
, pp. 213
–224
.8.
MacGregor
, S. A.
, Whitfield
, A.
, and Mohd Noor
, A. B.
, 1994, “Design and Performance of Vaneless Volutes for Radial Inflow Turbines. 3. Experimental Investigation of the Internal Flow Structure
,” Proc. Inst. Mech. Eng., Part A
0957-6509, 208
, pp. 295
–302
.9.
Glassman
, A. T.
, 1976, “Computer Program for Design and Analysis of Radial Inflow Turbines
,” NASA TN D-8164.10.
Stewart
, W. L.
, Whitney
, W. J.
, and Wong
, R. Y.
, 1960, “A Study of Boundary Layer Characteristics of Turbomachine Blade Rows and Their Relation to Overall Blade Loss
,” J. Basic Eng.
0021-9223, 82
(3
), pp. 588
–592
.11.
Futural
, S. M.
, and Wasserbauer
, C. A.
, 1965, “Off-Design Performance Prediction With Experimental Verification for a Radial-Inflow Turbine
,” NASA, TN D-2621.12.
Kofskey
, M. G.
, and Nusbaum
, W. J.
, 1972, “Effects of Specific Speed on Experimental Performance of a Radial-Inflow Turbine
,” NASA, TN D-6605.13.
Kofskey
, M. G.
, and Wasserbauer
, C. A.
, 1966, “Experimental Performance Evaluation of a Radial-Inflow Turbine Over a Range of Specific Speeds
,” NASA, TN D-3742.14.
Rohlik
, H. E.
, 1968, “Analytical Determination of Radial-Inflow Turbine Design Geometry for Maximum Efficiency
,” NASA TN D-4384.15.
Palmer
, R. M.
, 1956, “D.I.G.T. Radial Inflow Turbine-Scroll and Nozzle Performance—Part II
,” Ricardo Internal Report No. 1368, Ricardo & Co., Sussex.16.
Hiett
, G. F.
, 1959, “D.I.G.T. Radial Inflow Turbine-Cold Tests on Turbine B, Turbine A and Turbine D
,” Ricardo Internal Report No. 1412, Ricardo & Co., Sussex.17.
Hiett
, G. F.
, and Johnston
, I. H.
, 1963, “Experiments Concerning the Aerodynamic Performance of Inward Flow Radial Turbines
,” Proc. Inst. Mech. Eng.
0020-3483, 178
, pp. 28
–42
.18.
Baines
, N. C.
, and Lavy
, M.
, 1990, “Flows in Vaned and Vaneless Stators of Radial Inflow Turbocharger Turbines
,” Institution of Mechanical Engineers Turbochargers and Turbocharging Conference
, Paper No. C405/005, pp. 7
–12
.19.
Rodgers
, C.
, 2000, “Radial Turbines-Blade Number and Reaction Effects
,” ASME International Gas Turbine Congress, Munich, ASME 2000-GT-456.20.
Connor
, W. A.
, and Flaxington
, D.
, 1994, “A One-Dimensional Performance Prediction Method for Radial Inflow Turbines
,” Institution of Mechanical Engineers Turbochargers and Turbocharging Conference
, Paper No. C484/041/94, pp. 271
–282
.21.
Spence
, S. W. T.
, and Artt
, D. W.
, 1998, “An Experimental Assessment of Incidence Losses in a Radial Inflow Turbine Rotor
,” Proc. Inst. Mech. Eng., Part A
0957-6509, 212
, pp. 43
–53
.22.
Rosborough
, R. S. E.
, 2003, “An Experimental Assessment of Different Vaned and Vaneless Stators for a Radial Inflow Turbine
,” Ph.D. thesis, Queen’s University of Belfast, UK.23.
Spence
, S. W. T.
, Doran
, W. J.
, and Artt
, D. W.
, 1999, “Experimental Performance Evaluation of a 99.0mm Radial Inflow Nozzled Turbine at Larger Stator/Rotor Throat Area Ratios
,” Proc. Inst. Mech. Eng., Part A
0957-6509, 213
, pp. 205
–218
.Copyright © 2007
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