This work deals with the influence of roughness on high-pressure steam turbine stages. It is divided in three parts. In the first one, an experimental campaign on a linear cascade is described, in which blade losses are measured for different values of surface roughness and in a range of Reynolds numbers of practical interest. The second part is devoted to the basic aspects of the numerical approach and consists of a detailed discussion of the roughness models used for computations. The fidelity of such models is then tested against measurements, thus allowing their fine-tuning and proving their reliability. Finally, comprehensive computational fluid dynamics (CFD) analysis is carried out on a high-pressure stage, in order to investigate the influence of roughness on the losses over the entire stage operating envelope. Unsteady effects that may affect the influence of the roughness, such as the upcoming wakes on the rotor blade, are taken into account, and the impact of transition-related aspects on the losses is discussed.
References
References
1.
Nikuradse
, J.
, 1933
, “Laws for Flows in Rough Pipes
,” VDI-Forchungsheft 361, Series B, Vol. 4 (English translation NACA TM 1292, 1950).2.
Schlichting
, H.
, 1936
, “Experimentelle Untersuchungen zum Rauhigkeitsproblem
,” Ing. Arch.
7
(1
), pp. 1
–34
.10.1007/BF020841663.
Bons
, J. P.
, 2010
, “A Review of Surface Roughness Effects in Gas Turbines
,” ASME J. Turbomach.
, 132
(2), p. 021004
.10.1115/1.30663154.
Flack
, K. A.
, and Schultz
, M. P.
, 2010
, “Review of Hydraulic Roughness Scales in the Fully Rough Regime
,” ASME J. Fluid Eng.
, 132
(4), p. 041203
.10.1115/1.40014925.
Schlichting
, H.
, 1979
, Boundary-Layer Theory
, 7th ed., McGraw-Hill, Inc.
, New York
.6.
Speidel
, L.
, 1962
, “Determination of the Necessary Surface Quality and Possible Losses Due to Roughness in Steam Turbines
,” Elektrizitätswirtschaft
, 61
(21
), pp. 799
–804
.7.
Hummel
, F.
, Lötzerich
, M.
, Cardamone
, P.
, and Fottner
, L.
, 2005
, “Surface Roughness Effects on Turbine Blade Aerodynamics
,” ASME J. Turbomach.
, 127
(3), pp. 453
–461
.10.1115/1.18603778.
Dirling
, R. B.
, 1973
, “A Method for Computing Roughwall Heat Transfer Rates on Re-Entry Nosetips
,” AIAA
Paper No. 73-76310.2514/6.1973-763.9.
Sigal
, A.
, and Danberg
, J. E.
, 1990
, “New Correlation of Roughness Density Effect on the Turbulent Boundary Layer
,” AIAA J.
, 28
(3
), pp. 554
–556
.10.2514/3.1042710.
van Rij
, J. A.
, Belnap
, B. J.
, and Ligrani
, P. M.
, 2002
, “Analysis and Experiments on Three-Dimensional, Irregular Surface Roughness
,” ASME J. Fluid Eng.
, 124
(3), pp. 671
–677
.10.1115/1.148622211.
Waigh
, D. R.
, and Kind
, R. J.
, 1998
, “Improved Aerodynamic Characterization of Regular Three-Dimensional Roughness
,” AIAA J.
, 36
(6
), pp. 1117
–1119
.10.2514/2.49112.
Zhang
, Q.
, Goodro
, M.
, Ligrani
, P. M.
, Trindade
, R.
, and Sreekanth
, S.
, 2006
, “Influence of Surface Roughness on the Aerodynamic Losses of a Turbine Vane
,” ASME J. Turbomach.
, 128
(3), pp. 568
–578
10.1115/1.2175163.13.
Im
, J. H.
, Shin
, J. H.
, Hobson
, G. V.
, Song
, S. J.
, and Millsaps
, K. T.
, 2013
, “Effect of Leading Edge Roughness and Reynolds Number on Compressor Profile Loss
,” ASME
Paper No. GT2013-95487. 10.1115/GT2013-9548714.
Vázquez
, R.
, and Torre
, D.
, 2013
, “The Effect of Surface Roughness on Efficiency of Low Pressure Turbines
,” ASME
Paper No. GT2013-94200.10.1115/GT2013-9420015.
Hodson
, H. P.
, and Howell
, R. J.
, 2005
, “The Role of Transition in High-Lift Low-Pressure Turbines for Aeroengines
,” Prog. Aerosp. Sci.
, 41
(6), pp. 419
–454
.10.1016/j.paerosci.2005.08.00116.
Boyle
, R. J.
, 1994
, “Prediction of Surface Roughness and Incidence Effects on Turbine Performance
,” ASME J. Turbomach.
, 116
(4), pp. 745
–751
.10.1115/1.292946817.
Mesbah
, M.
, Arts
, T.
, Simon
, J. F.
, and Geuzaine
, P.
, 2009
, “Numerical and Experimental Analysis of Surface Roughness Effects for Compressor Blades
,” AIAA
Paper No. ISABE-2009-1151.18.
Boyle
, R. J.
, and Senyitko
, R. G.
, 2003
, “Measurements and Predictions of Surface Roughness Effects on Turbine Vane Aerodynamics
,” ASME
Paper No. GT2003-38580. 10.1115/GT2003-3858019.
Cebeci
, T.
, and Chang
, K.
, 1978
, “Calculation of Incompressible Rough-Wall Boundary Layer Flows
,” AIAA J.
, 16
(7
), pp. 730
–735
.10.2514/3.757120.
Mayle
, R. E.
, 1991
, “The Role of Laminar-Turbulent Transition in Gas Turbine Engines
,” ASME J. Turbomach.
, 113
(4), pp. 509
–537
.10.1115/1.292911021.
Dossena
, V.
, Perdichizzi
, A.
, and Savini
, M.
, 1999
, “The Influence of Endwall Contouring on the Performance of a Turbine Nozzle Guide Vane
,” ASME J. Turbomach.
, 121
(2
), pp. 200
–208
.10.1115/1.284130222.
D'Ippolito
, G.
, Dossena
, V.
, and Mora
, A.
, 2011
, “The Influence of Blade Lean on Straight and Annular Turbine Cascade Flow Field
,” ASME J. Turbomach.
, 133
(1), p. 011013
.10.1115/1.400053623.
Speidel
, L.
, 1954
, “Einfluβ der Oberflächenrauhigkeit auf die Strömungsverluste in ebenen Schaufelgittern
,” Forschg, Ing.-Wes.
20
(5), pp. 129
–140
.10.1007/BF0255837324.
Feindt
, E. G.
, 1956
, Untersuchungen über die Abhängigkeit des Umshclages laminar-turbulent von der Oberflächenrauhigkeit und der Druckverteilung
, Springer-Verlag
, Berlin
.25.
Arnone
, A.
, Liou
, M. S.
, and Povinelli
, L. A.
, 1992
, “Navier–Stokes Solution of Transonic Cascade Flow Using Non-Periodic c-Type Grids
,” J. Propul. Power
, 8
(2
), pp. 410
–417
.10.2514/3.2349326.
Arnone
, A.
, and Pacciani
, R.
, 1996
, “Rotor-Stator Interaction Analysis Using the Navier-Stokes Equations and a Multigrid Method
,” ASME J. Turbomach.
, 118
(4
), pp. 679
–689
.10.1115/1.284092327.
Jameson
, A.
, 1991
, “Time Dependent Calculations Using Multigrid With Applications to Unsteady Flows Past Airfoils and Wings
,” AIAA
Paper No. 91-1596.10.2514/6.1991-159628.
Wilcox
, D. C.
, 1998
, Turbulence Modeling for CFD
, 2nd ed., DCW Industries, Inc.
, La Cañada, CA
.29.
Mayle
, R. E.
, and Schultz
, A.
, 1997
, “The Path to Predicting Bypass Transition
,” ASME J. Turbomach.
, 119
(3
), pp. 405
–411
.10.1115/1.284113830.
Pacciani
, R.
, Marconcini
, M.
, Fadai-Ghotbi
, A.
, Lardeau
, S.
, and Leschziner
, M. A.
, 2011
, “Calculation of High-Lift Cascades in Low Pressure Turbine Conditions Using a Three-Equation Model
,” ASME J. Turbomach.
, 133
(3
), p. 031016
.10.1115/1.400123731.
Pacciani
, R.
, Marconcini
, M.
, Arnone
, A.
, and Bertini
, F.
, 2011
, “An Assessment of the Laminar Kinetic Energy Concept for the Prediction of High-Lift, Low-Reynolds Number Cascade Flows
,” Proc. Inst. Mech. Eng. A
, 225
(7
), pp. 995
–1003
.10.1177/095765091141244432.
Wilcox
, D. C.
, 2008
, “Formulation of the k-ω Turbulence Model Revisited
,” AIAA J.
, 46
(11
), pp. 2823
–2838
.10.2514/1.3654133.
Hellsten
, A.
, and Laine
, S.
, 1997
. “Extension of the k-ω-SST Turbulence Model for Flows Over Rough Surfaces
,” AIAA
Paper No. 97-3577.10.2514/6.1997-357734.
Patel
, V. C.
, 1998
, “Perspective: Flow at High Reynolds Number and Over Rough Surfaces—Achilles Heel of CFD
,” ASME J. Fluid Eng.
, 120
(3
), pp. 434
–444
.10.1115/1.282068235.
Knopp
, T.
, Eisfeld
, B.
, and Calvo
, J. B.
, 2009
. “A New Extension for k-ω Turbulence Models to Account for Wall Roughness
,” Int. J. Heat Fluid Flow
, 30
(1), pp. 54
–65
.10.1016/j.ijheatfluidflow.2008.09.00936.
Mills
, A.
, and Hang
, X.
, 1983
, “On the Skin Friction Coefficient for a Fully Rough Flat Plate
,” ASME J. Fluid Eng.
, 105
(3
), pp. 364
–365
.10.1115/1.324100837.
Craig
, H. R. M.
, and Cox
, H. J. A.
, 1970
, “Performance Estimation of Axial Flow Turbines
,” Proc. Inst. Mech. Eng.
, 185
(1), pp. 407
–424
.10.1243/PIME_PROC_1970_185_048_0238.
Aungier
, R. H.
, 2006
, Turbine Aerodynamics: Axial-Flow and Radial Inflow Turbine Design and Analysis
, American Society of Mechanical Engineers
, New York
.
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