Abstract

A novel test facility for transonic fans has been constructed and commissioned at École Centrale de Lyon (ECL) within the Project PHARE-2. The facility is instrumented with multi-physical measurement systems to deeply investigate aeroelastic and aeroacoustic phenomena. To enable long-term fundamental research, the composite material open-test-case rotor ECL5 is currently under development, which shall be established as a new reference case for method development. Within the present publication, the project objectives, the current rotor design, ECL5v2, and details on the test facility are presented. With the goal to establish future academic collaborations, the authors aim to initiate a discussion in the research community in an early stage of the test case development to receive constructive feedback on the design and research approach.

References

References
1.
Day
,
I. J.
,
2015
, “
Stall, Surge, and 75 Years of Research
,”
ASME J. Turbomach.
,
138
(
1
), p.
011001
. 10.1115/1.4031473
2.
Denton
,
J. D.
,
2010
, “
Some Limitations of Turbomachinery CFD
,”
ASME Turbo Expo 2010: Power for Land, Sea, and Air, Volume 7: Turbomachinery, Parts A, B, and C
,
Glasgow, UK
,
June 14–18
, Paper No. GT2010-22540, pp.
735
745
.
3.
Tucker
,
P. G.
,
2011
, “
Computation of Unsteady Turbomachinery Flows: Part 2—LES and Hybrids
,”
Prog. Aerospace Sci.
,
47
(
7
), pp.
546
569
. 10.1016/j.paerosci.2011.07.002
4.
Stapelfeldt
,
S.
, and
Vahdati
,
M.
,
2017
, “
On the Importance of Engine-Representative Models for Fan Flutter Predictions
,”
ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition, Volume 7B: Structures and Dynamics
,
Charlotte, NC
,
June 26–30
, Paper No. GT2017-64167, p.
V07BT36A012
.
5.
Kielb
,
R. E.
,
Barter
,
J. W.
,
Thomas
,
J. P.
, and
Hall
,
K. C.
,
2003
, “
Blade Excitation by Aerodynamic Instabilities: A Compressor Blade Study
,”
ASME Turbo Expo 2003, Collocated With the 2003 International Joint Power Generation Conference, Volume 4: Turbo Expo 2003
,
Atlanta, GA
,
June 16–19
, Paper No. GT2003-38634, pp.
399
406
.
6.
Brandstetter
,
C.
,
Jüngst
,
M.
, and
Schiffer
,
H.-P.
,
2018
, “
Measurements of Radial Vortices, Spill Forward, and Vortex Breakdown in a Transonic Compressor
,”
ASME J. Turbomach.
,
140
(
6
), p.
061004
. 10.1115/1.4039053
7.
Stapelfeldt
,
S.
, and
Vahdati
,
M.
,
2019
, “
Improving the Flutter Margin of an Unstable Fan Blade
,”
ASME J. Turbomach.
,
141
(
7
), p.
071006
. 10.1115/1.4042645
8.
Vahdati
,
M.
, and
Cumpsty
,
N.
,
2015
, “
Aeroelastic Instability in Transonic Fans
,”
ASME J. Eng. Gas Turbines Power
,
138
(
2
), p.
022604
. 10.1115/1.4031225
9.
Wilson
,
M. J.
,
Imregun
,
M.
, and
Sayma
,
A. I.
,
2006
, “
The Effect of Stagger Variability in Gas Turbine Fan Assemblies
,”
ASME J. Turbomach.
,
129
(
2
), pp.
404
411
. 10.1115/1.2437776
10.
Pullan
,
G.
,
Young
,
A. M.
,
Day
,
I. J.
,
Greitzer
,
E. M.
, and
Spakovszky
,
Z. S.
,
2015
, “
Origins and Structure of Spike-Type Rotating Stall
,”
ASME J. Turbomach.
,
137
(
5
), p.
051007
. 10.1115/1.4028494
11.
Lee
,
K.-B.
,
Wilson
,
M.
, and
Vahdati
,
M.
,
2017
, “
Numerical Study on Aeroelastic Instability for a Low-Speed Fan
,”
ASME J. Turbomach.
,
139
(
7
), p.
071004
. 10.1115/1.4035569
12.
Rendu
,
Q.
,
2016
, “
Modélisation des écoulements Transsoniques Décollés Pour L’étude des Interactions Fluide-Structure
,” Ph.D. thesis,
Université de Lyon
.
13.
Rendu
,
Q.
,
Aubert
,
S.
, and
Ferrand
,
P.
,
2017
, “
Influence of Reduced Frequency on Choke Flutter Instability in Transonic UHBR Fan
,”
International Forum on Aeroelasticity and Structural Dynamics
,
Como, Italy
,
June 25–28
.
14.
Duquesne
,
P.
,
Rendu
,
Q.
,
Ferrand
,
P.
, and
Aubert
,
S.
,
2018
, “
Local Contribution of Blades Vibration on the Choke Flutter Instability in Transonic UHBR Fan
,”
53rd 3AF International Conference on Applied Aerodynamics.
,
Salon de Provence
,
Mar. 26–28
.
15.
Brandstetter
,
C.
,
Paoletti
,
B.
, and
Ottavy
,
X.
,
2019
, “
Compressible Modal Instability Onset in an Aero-Dynamically Mistuned Transonic Fan
,”
ASME J. Turbomach.
,
141
(
3
), p.
031004
. 10.1115/1.4042310
You do not currently have access to this content.