The subject of this paper is the experimental and numerical investigation of a state-of-the-art high pressure centrifugal compressor stage with pipe diffuser for a jet engine application. This study shows the impact of impeller tip clearance- and bleed-variation on the centrifugal stage. The purpose of this paper is threefold. In the first place, it investigates the effects on the stage performance. Secondly, it seeks to explain local flow-phenomena, especially in the diffuser. Finally, it shows that steady CFD simulations are capable of predicting these phenomena. Experimental data were gathered using conventional pitot and three-hole-probes as well as particle-image-velocimetry. Numerical simulations with the CFD solver TRACE were conducted to get fundamental insight into the flow. Thus, this study contributes greatly towards understanding the principle of the flow phenomena in the pipe diffuser of a centrifugal compressor.

References

References
1.
Senoo
,
Y.
, and
Ishida
,
M.
,
1987
, “
Deterioration of Compressor Performance Due to Tip Clearance of Centrifugal Impellers
,”
ASME J. Turbomach.
109
, pp.
55
61
.10.1115/1.3262070
2.
Brasz
,
J.
,
1988
, “
Investigation into the Effect of Tip Clearance on Centrifugal Compressor Performance
,”
ASME
Paper No. 88-GT-190.
3.
Bansod
,
P.
, and
Rhie
,
C.
,
1990
, “
Computation of Flow Through a Centrifugal Impeller with Tip Leakage
,”
AIAA
Paper No. 1990-2021.
4.
Zachau
,
U.
,
Niehuis
,
R.
,
Hoenen
,
H.
, and
Wisler
,
D. C.
,
2009
, “
Experimental Investigation of the Flow in the Pipe Diffuser of a Centrifugal Compressor Stage Under Selected Parameter Variations
,”
ASME
Paper No. GT2009-59320.10.1115/GT2009-59320
5.
Eckert
,
B.
, and Schnell, E.,
1961
,
Axialund Radialkompressoren, Anwendung, Theorie, Berechnung
,
Springer
,
New York
.
6.
Majidi
,
K.
,
1997
, “
Numerische Berechnung der Sekundärströmung in Radialen Kreiselpumpen zur Feststoffförderung
,”
Ph.D. thesis, Technische Universität Berlin.
7.
Weiβ
,
C.
,
2003
, “
Numerische Simulation der reibungsbehafteten Strömung in Laufrädern von Radialverdichtern
,”
Ph.D. thesis, Rheinisch-Westfälischen Technischen Hochschule Aachen
,
Aachen, Germany
.
8.
Runstadler
,
P. W.
, and
Dolan
,
F. X.
,
1975
,
Diffuser Data Book
,
Creare, Inc.
,
Hanover, NH
.
9.
Ziegler
,
K. U.
,
Gallus
,
H. E.
, and
Niehuis
,
R.
,
2002
, “
A Study on Impeller-Diffuser Interaction: Part II—Detailed Flow Analysis
,”
ASME
Paper No. GT-2002-30382.10.1115/GT2002-30382
10.
Ziegler
,
K. U.
,
Gallus
,
H. E.
, and
Niehuis
,
R.
,
2002
, “
A Study on Impeller-Diffuser Interaction: Part I—Influence on the Performance
,”
ASME
Paper No. GT-2002-30381.10.1115/GT2002-30381
11.
Zachau
,
U.
,
2007
, “
Experimental Investigation on the Diffuser Flow of a Centrifugal Compressor Stage with Pipe Diffuser
,”
Ph.D. thesis, RWTH Aachen
,
Aachen, Germany
.
12.
Zachau
,
U.
,
Buescher
,
C.
,
Niehuis
,
R.
,
Hoenen
,
H.
,
Wisler
,
D.
, and
Moussa
,
Z. M.
,
2008
, “
Experimental Investigation of a Centrifugal Compressor Stage with Focus on the Flow in the Pipe Diffuser Supported by Particle Image Velocimetry (PIV) Measurements
,”
ASME
Paper No. GT2008-51538.10.1115/GT2008-51538
13.
Grates
,
D. R.
,
2009
, “
Numerische Simulation der instationären Strömung in einem Radialverdichter mit Pipe-Diffusor
,”
Ph.D. thesis, RWTH Aachen
,
Aachen, Germany
.
14.
Bryans
,
A.
, “
Diffuser For A Centrifugal Compressor
,”
1986, U.S. Patent No. 4576550.
15.
Wallis
,
C.
,
Moussa
,
Z.
, and
Srivastava
,
B.
,
2002
, “
A Stage Calculation in a Centrifugal Compressor
,”
23rd International Congress of Aeronautical Sciences (ICAS2002)
, Toronto, Canada, September 8–13.
16.
Zachcial
,
A.
,
2006
,
Mischungsebenenmodellierung zur Analyse der Räumlichen Strömung in Mehrstufigen Turbomaschinenkomponenten
,
Shaker
,
Aachen, Germany
.
17.
Giles
,
M.
,
1988
, “
Non-Reflecting Boundary Conditions for the Euler Equations
,”
Technical Report CFDL-TR-88-1.
18.
Wilcox
,
D.
,
1988
, “
Reassessment of the Scale-Determining Equation for Advanced Turbulence Models
,”
AIAA J.
,
26
(
11
), pp.
1299
1310
.10.2514/3.10041
19.
Kožulović
,
D.
, and
Röber
,
T.
,
2006
, “
Modelling the Streamline Curvature Effects in Turbomachinery Flows
,” Proceedings of ASME Turbo Expo 2006: Power for Land, Sea and Air (GT2006), Barcelona, Spain, May 8–11,
ASME
Paper No. GT2006-90265, pp. 1239–1248.10.1115/GT2006-90265
20.
Srivastava
,
B. N.
,
Macrorie
,
M.
, and
Machnaim.
,
J.
,
2004
, “
Stage Analysis of Centrifugal Compressors for Design: CFD Validation
,” 22nd Applied Aerodynamics Conference and Exhibit, Providence, RI, August 16–19, Paper No. AIAA-2004-4835.
21.
Bourgeois
,
J. A.
,
Martinuzzi
,
R. J.
,
Roberts
,
D.
,
Savory
,
E.
, and
Zhang
,
C.
,
2009
, “
Experimental and Numerical Investigation of an Aero-Engine Centrifugal Compressor
,” Proceedings of ASME Turbo Expo 2009: Power for Land, Sea and Air (GT2009), Orlando, FL, June 8–12,
ASME
Paper No. GT2009-59808, pp.
1339
1348
.10.1115/GT2009-59808
22.
Ziegler
,
K. U. M.
,
2003
, “
Experimentelle Untersuchung der Laufrad-Diffuror-Interaktion in einem Radialverdichter variabler Geometrie
,”
Ph.D. thesis, RWTH Aachen
,
Aachen, Germany
.
23.
Kenny
,
D.
,
1969
, “
A Novel Low-Cost Diffuser for High-Performance Centrifugal Compressors
,”
J. Eng. Power
,
91
(
1
), pp.
37
47
.10.1115/1.3574671
24.
Pampreen
,
R.
,
1973
, “
Small Turbomachinery Compressor and Fan Aerodynamics
,”
J. Eng. Power
,
95
(
3
), pp.
251
–256.10.1115/1.3445730
You do not currently have access to this content.