Abstract
This research presents a series of simulations that investigate the effects of tip clearance on the aeroelastic stability of a wide-chord high-speed transonic fan rotor. The results show that the stall margin and the total pressure ratio decreases as the tip clearance increases. The effect of tip clearance on the blade loading can extend to 30% span. The phase of the influence coefficient without tip clearance is different from that with clearance, which causes the most unstable aerodynamic damping to shift in the nodal diameter. As the clearance increases from 0.25 mm to 2 mm, the damping decreases. The nonmonotonic behavior found by other researchers was not observed in this study. We conclude that the tip clearance affects the aeroelastic stability in two ways. The first is to change the blade loading so that the amplitude of the unsteady pressure increases or decreases, while the phase hardly changes, resulting in changes in aerodynamic damping. The second is to change the local flow so that the unsteady pressure amplitude and the phase change locally.
Issue Section:
Research Papers
References
1.
Denton
,
J. D.
, 1993
, “
The 1993 IGTI Scholar Lecture: Loss Mechanisms in Turbomachines
,” ASME J. Turbomach.
,
115
(4
), pp. 621
–656
.10.1115/1.29292992.
Khaleghi
,
H.
, 2015
, “
Stall Inception and Control in a Transonic Fan, Part A: Rotating Stall Inception
,” Aerosp. Sci. Technol
,
41
, pp. 250
–258
.10.1016/j.ast.2014.12.0043.
Hewkin-Smith
,
M.
,
Pullan
,
G.
,
Grimshaw
,
S. D.
,
Greitzer
,
E. M.
, and
Spakovszky
,
Z. S.
, 2019
, “
The Role of Tip Leakage Flow in Spike-Type Rotating Stall Inception
,” ASME J. Turbomach.
,
141
(6
), p. 061010
.10.1115/1.40422504.
Mailach
,
R.
,
Lehmann
,
I.
, and
Vogeler
,
K.
, 2001
, “
Rotating Instabilities in an Axial Compressor Originating From the Fluctuating Blade Tip Vortex
,” ASME J. Turbomach.
,
123
(3
), pp. 453
–460
.10.1115/1.13701605.
Wang
,
H.
,
Wu
,
Y.
, and
Ouyang
,
H.
, 2018
, “
Numerical Investigations of Rotating Instability and Unsteady Tip Vortex Structures in an Axial Compressor
,” ASME
Paper No. GT2018-76821.10.1115/GT2018-768216.
Furukawa
,
M.
,
Saiki
,
K.
,
Yamada
,
K.
, and
Inoue
,
M.
, 2000
, “
Unsteady Flow Behavior Due to Breakdown of Tip Leakage Vortex in an Axial Compressor Rotor at Near-Stall Condition
,” ASME
Paper No. GT-2000-0666.10.1115/GT-2000-06667.
Yamada
,
K.
,
Funazaki
,
K.
, and
Sasaki
,
H.
, 2008
, “
Numerical Investigation of Relation Between Unsteady Behavior of Tip Leakage Vortex and Rotating Disturbance in a Transonic Axial Compressor Rotor
,” ASME
Paper No. GT2008-50779.10.1115/GT2008-507798.
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/GT2003-386349.
Vo
,
H. D.
, 2010
, “
Role of Tip Clearance Flow in Rotating Instabilities and Nonsynchronous Vibrations
,” J. Propul. Power
,
26
(3
), pp. 556
–561
.10.2514/1.2670910.
Thomassin
,
J.
,
Vo
,
H. D.
, and
Mureithi
,
N. W.
, 2009
, “
Blade Tip Clearance Flow and Compressor Nonsynchronous Vibrations: The Jet Core Feedback Theory as the Coupling Mechanism
,” ASME J. Turbomach.
,
131
(1
), p. 011013
.10.1115/1.281297911.
Thomassin
,
J.
,
Vo
,
H. D.
, and
Mureithi
,
N. W.
, 2011
, “
The Tip Clearance Flow Resonance Behind Axial Compressor Nonsynchronous Vibration
,” ASME J. Turbomach.
,
133
(4
), p. 041030
.10.1115/1.400136812.
Espinal
,
D.
,
Im
,
H.
, and
Zha
,
G.
, 2018
, “
Full-Annulus Simulation of Nonsynchronous Blade Vibration Excitation of an Axial Compressor
,” ASME J. Turbomach.
,
140
(3
), p. 031008
.10.1115/1.403833713.
Im
,
H.
, and
Zha
,
G.
, 2014
, “
Investigation of Flow Instability Mechanism Causing Compressor Rotor-Blade Nonsynchronous Vibration
,” AIAA J.
,
52
(9
), pp. 2019
–2031
.10.2514/1.J05278114.
Im
,
H.
, and
Zha
,
G.
, 2012
, “
Simulation of Non-Synchronous Blade Vibration of an Axial Compressor Using a Fully Coupled Fluid/Structure Interaction
,” ASME
Paper No. GT2012-68150.10.1115/GT2012-6815015.
Möller
,
D.
,
Jüngst
,
M.
,
Schiffer
,
H.
,
Giersch
,
T.
, and
Heinichen
,
F.
, 2018
, “
Influence of Rotor Tip Blockage on Near Stall Blade Vibrations in an Axial Compressor Rig
,” ASME J. Turbomach.
,
140
(2
), p. 021007
.10.1115/1.403831616.
Leichtfuß
,
S.
,
Holzinger
,
F.
,
Brandstetter
,
C.
,
Wartzek
,
F.
, and
Schiffer
,
H. P.
, 2013
, “
Aeroelastic Investigation of a Transonic Research Compressor
,” ASME
Paper No. GT2013-94730.10.1115/GT2013-9473017.
Möller
,
D.
,
Jüngst
,
M.
,
Holzinger
,
F.
,
Brandstetter
,
C.
,
Schiffer
,
H.
, and
Leichtfuß
,
S.
, 2017
, “
Mechanism of Nonsynchronous Blade Vibration in a Transonic Compressor Rig
,” ASME J. Turbomach.
,
139
(1
), p. 011002
.10.1115/1.403402918.
Holzinger
,
F.
,
Wartzek
,
F.
,
Jüngst
,
M.
,
Schiffer
,
H.
, and
Leichtfuss
,
S.
, 2016
, “
Self-Excited Blade Vibration Experimentally Investigated in Transonic Compressors: Rotating Instabilities and Flutter
,” ASME J. Turbomach.
,
138
(4
), p. 041006
.10.1115/1.403216319.
Möller
,
D.
,
Jüngst
,
M.
,
Holzinger
,
F.
,
Brandstetter
,
C.
,
Schiffer
,
H.-P.
, and
Leichtfuß
,
S.
, 2016
, “
Numerical Investigation of Tip Clearance Flow Induced Flutter in an Axial Research Compressor
,” ASME
Paper No. GT2016-56956.10.1115/GT2016-5695620.
Besem
,
F. M.
, and
Kielb
,
R. E.
, 2017
, “
Influence of the Tip Clearance on a Compressor Blade Aerodynamic Damping
,” J. Propul. Power
,
33
(1
), pp. 227
–233
.10.2514/1.B3612121.
Fu
,
Z.
,
Wang
,
Y.
,
Jiang
,
X.
, and
Wei
,
D.
, 2014
, “
Tip Clearance Effects on Aero-Elastic Stability of Axial Compressor Blades
,” ASME J. Eng. Gas Turbines Power
,
137
(1
), p. 012501
.10.1115/1.402801922.
Dong
,
X.
,
Zhang
,
Y.
,
Zhang
,
Z.
,
Lu
,
X.
, and
Zhang
,
Y.
, 2019
, “
Investigation of Flutter Stability of a High-Speed Transonic Fan in Different Conditions
,” International Gas Turbine Congress 2019 (IGTC)
, Tokyo, Japan, Nov. 17–22, Paper No. IGTC-2019-226.23.
Teixeira
,
M. A. M.
, and
Kielb
,
R. E.
, 2017
, “
Tip Clearance Influence on Aerodynamic Damping Maps
,” 12th European Conference on Turbomachinery Fluid Dynamics & Thermodynamics, European Turbomachinery Society, Stockholm, Sweden, Apr. 3–7, Paper No. ETC2017-300
.10.29008/ETC2017-30024.
Huang
,
X.
,
He
,
L.
, and
Bell
,
D. L.
, 2008
, “
Effects of Tip Clearance on Aerodynamic Damping in a Linear Turbine Cascade
,” AIAA J. Propul. Power
,
24
(1
), pp. 26
–33
.10.2514/1.2517425.
Zhao
,
F.
,
Nipkau
,
J.
, and
Vahdati
,
M.
, 2016
, “
Influence of Acoustic Reflections on Flutter Stability of an Embedded Blade Row
,” Proc. Inst. Mech. Eng A
,
230
(1
), pp. 29
–43
.10.1177/095765091561600426.
Buchwald
,
P.
,
Farahmand
,
A.
, and
Vogt
,
D. M.
, 2019
, “
On the Influence of Blade Aspect Ratio on Aerodynamic Damping
,” ASME J. Turbomach.
,
141
(10
), p. 101007
.10.1115/1.404390527.
Phan
,
H. M.
, and
He
,
L.
, 2019
, “
Validation Studies of Linear Oscillating Compressor Cascade and Use of Influence Coefficient Method
,” ASME J. Turbomach.
, 142(5), p. 051005.10.1115/1.404565728.
Hsu
,
K.
, and
Hoyniak
,
D.
, 2011
, “
A Fast Influence Coefficient Method for Linearized Flutter and Forced-Response Analysis
,” AIAA
Paper No. 2011-229.10.2514/6.2011-22929.
Vogel
,
K.
,
Naidu
,
A. D.
, and
Fischer
,
M.
, 2017
, “
Comparison of the Influence Coefficient Method and Travelling Wave Mode Approach for the Calculation of Aerodynamic Damping of Centrifugal Compressors and Axial Turbines
,” ASME
Paper No. GT2017-64643.10.1115/GT2017-6464330.
Khalid
,
S. A.
,
Khalsa
,
A. S.
,
Waitz
,
I. A.
,
Tan
,
C. S.
,
Greitzer
,
E. M.
,
Cumpsty
,
N. A.
,
Adamczyk
,
J. J.
, and
Marble
,
F. E.
, 1999
, “
Endwall Blockage in Axial Compressors
,” ASME J. Turbomach.
,
121
(3
), pp. 499
–509
.10.1115/1.284134431.
Lange
,
M.
,
Rolfes
,
M.
,
Mailach
,
R.
, and
Schrapp
,
H.
, 2017
, “
Periodic Unsteady Tip Clearance Vortex Development in a Low-Speed Axial Research Compressor at Different Tip Clearances
,” ASME J. Turbomach.
,
140
(3
), p. 031005
.10.1115/1.4038319Copyright © 2020 by ASME
You do not currently have access to this content.
