The tip clearance effects on aero-elastic stability of axial compressor blades are investigated with two independent three-dimensional (3D) flutter prediction approaches: energy method and aero-elastic eigenvalue analysis. An axial compressor rotor which has encountered broken fault caused by flutter during the test rig and flight has been analyzed for five tip gap configurations. A consistent conclusion obtained by these two independent approaches shows the variation trend of aerodynamic damping is not monotonic, but aerodynamic damping at the least stable case shows a trend of first decrease and then increase with the rising of tip gap size, which is different from the results of other researchers and can be utilized to understand the conflict between the conclusions of different research work. Apart from the results of tip clearance effects on aero-elastic stability, the employed two methods have revealed the key factors involved in the flutter occurrence from a different perspective.
Issue Section:
Gas Turbines: Structures and Dynamics
References
1.
Im
, H.-S.
, and Zha
, G.-C.
, 2013
, “Flutter Prediction of a Transonic Fan With Travelling Wave Using Fully Coupled Fluid/Structure Interaction
,” ASME
Paper No. GT2013-94341. 10.1115/GT2013-943412.
Zhang
, X. W.
, Wang
, Y. R.
, and Xu
, K. N.
, 2011
, “Flutter Prediction in Turbomachinery With Energy Method
,” Proc. Inst. Mech. Eng., Part G
, 225
(9
), pp. 995
–1002
.10.1177/09544100114059423.
Nowinski
, M.
, and Panovsky
, J.
, 2000
, “Flutter Mechanisms in Low Pressure Turbine Blades
,” ASME J. Eng. Gas. Turbines Power
, 122
(1
), pp. 82
–88
.10.1115/1.4831794.
Vahdati
, M.
, Sayma
, A.
, Marshall
, J.
, and Imregun
, M.
, 2001
, “Mechanisms and Prediction Methods for Fan Blade Stall Flutter
,” J. Propul. Power
, 17
(5
), pp. 1100
–1108
.10.2514/2.58505.
Zhang
, X.
, Wang
, Y.
, and Xu
, K.
, 2013
, “Mechanisms and Key Parameters for Compressor Blade Stall Flutter
,” ASME J. Turbomach.
, 135
(2
), p. 024501
.10.1115/1.40074416.
Kielb
, R. E.
, Barter
, J. W.
, Thomas
, J. P.
, and Hall
, K. C.
, 2003
, “Blade Excitation by Aerodynamic Instabilities: A Compressor Blade Study
,” ASME
Paper No. GT2003-38634. 10.1115/GT2003-386347.
Kielb
, R. E.
, Hall
, K. C.
, Spiker
, M.
, Thomas
, J. P.
, Pratt
, E. T.
, Jr., and Jeffries
, R.
, 2006
, “Non-Synchronous Vibration of Turbomachinery Airfoils
,” Duke University, Durham, NC, Technical Report No. AFRL-SR-AR-TR-06-0269.8.
Drolet
, M.
, Vo
, H. D.
, and Mureithi
, N. W.
, 2013
, “Effect of Tip Clearance on the Prediction of Nonsynchronous Vibrations in Axial Compressors
,” ASME J. Turbomach.
, 135
(1
), p. 011023
.10.1115/1.40064019.
Vo
, H. D.
, 2006
, “Role of Tip Clearance Flow in the Generation of Non-Synchronous Vibrations
,” 44th AIAA Aerospace Sciences Meeting and Exhibit
, Reno, NV, January 9–12, AIAA
Paper No. 2006-629. 10.2514/6.2006-62910.
Feng
, Y. C.
, Hu
, Z. A.
, Zhao
, X. H.
, and Tao
, D. P.
, 1986
, “Experimental Research on the Effects of Tip Clearance on Stall Flutter
,” J. Beijing Inst. Aviat.
, 9
(4
), pp. 79
–84
(in Chinese).11.
Yang
, H.
, and He
, L.
, 2004
, “Experimental Study on Linear Compressor Cascade With Three-Dimensional Blade Oscillation
,” J. Propul. Power
, 20
(1
), pp. 180
–188
.10.2514/1.128012.
Huang
, X.
, He
, L.
, and Bell
, D. L.
, 2008
, “Effects of Tip Clearance on Aerodynamic Damping in a Linear Turbine Cascade
,” J. Propul. Power
, 24
(1
), pp. 26
–33
.10.2514/1.2517413.
Peng
, C.
, 2011
, “Tip Running Clearances Effects on Tip Vortices Induced Axial Compressor Rotor Flutter
,” ASME
Paper No. GT2011-45504. 10.1115/GT2011-4550414.
Sakulkaew
, S.
, Tan
, C. S.
, Donahoo
, E.
, Cornelius
, C.
, and Montgomery
, M.
, 2013
, “Compressor Efficiency Variation With Rotor Tip Gap From Vanishing to Large Clearance
,” ASME J. Turbomach.
, 135
(3
), p. 031030
.10.1115/1.400754715.
Wu
, Q. F.
, Yang
, S. J.
, and Duan
, L. F.
, 1987
, “Experimental Research on the Stall Flutter of Tuned and Mistuned Blade/Bladed Disk
,” 606 Research Institution of Aero-Industry Ministry, Shen Yang, China (in Chinese).16.
Carta
, F. O.
, 1967
, “Coupled Blade-Disk-Shroud Flutter Instabilities in Turbojet Engine Rotors
,” ASME J. Eng. Power
, 89
(3
), pp. 419
–426
. 10.1115/1.361670817.
Sanders
, A. J.
, Hassan
, K. K.
, and Rabe
, D. C.
, 2004
, “Experimental and Numerical Study of Stall Flutter in a Transonic Low-Aspect Ratio Fan Blisk
,” ASME J. Turbomach.
, 126
(1
), pp. 166
–174
.10.1115/1.164553218.
Micallef
, D.
, Witteck
, D.
, Wiedermann
, A.
, Kluß
, D.
, and Mailach
, R.
, 2012
, “Three-Dimensional Viscous Flutter Analyses of a Turbine Cascade in Subsonic and Transonic Flows
,” ASME
Paper No. GT2012-68396. 10.1115/GT2012-6839619.
Fransson
, T.
, Bölcs
, A.
, Ott
, P.
, and Jöcker
, M.
, 1999
, “Viscous and Inviscid Linear/Nonlinear Calculations Versus Quasi-Three-Dimensional Experimental Cascade Data for a New Aeroelastic Turbine Standard Configuration
,” ASME J. Turbomach.
, 121
(4
), pp. 717
–725
.10.1115/1.283672520.
Moffatt
, S.
, and He
, L.
, 2003
, “Blade Forced Response Prediction for Industrial Gas Turbines: Part 1—Methodologies
,” ASME
Paper No. GT2003-38640. 10.1115/GT2003-3864021.
Kielb
, R.
, and Chiang
, H.-W.
, 1992
, “Recent Advancements in Turbomachinery Forced Response Analyses
,” 30th Aerospace Sciences Meeting & Exhibit
, Reno, NV, January 6–9, AIAA
Paper No. 92-0012. 10.2514/6.1992-1222.
Hsu
, K.
, and Hoyniak
, D.
, 2011
, “A Fast Influence Coefficient Method for Linearized Flutter and Forced-Response Analysis
,” 49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
, Orlando, FL, January 4–7, AIAA
Paper No. 2011-229. 10.2514/6.2011-229Copyright © 2015 by ASME
You do not currently have access to this content.
