This paper presents a computational fluid dynamics (CFD) study performed to assess the prediction of the minimum stable volume flow for a high Mach number, high head, and high volume flow compressor stage. CFD was run on a “pie slice” or sector stage model in steady-state condition and on a full 360 deg stage model under both steady and unsteady state conditions. The predictions of the minimum stable flow were compared to experimental data. Results showed the CFD performed on the “pie slice” stage model over-predicted the minimum stable flow by 9% compared to the test results, while the transient CFD predicted the minimum stable flow within 5.8%. Flow field comparisons of the impeller between unsteady and steady state CFD revealed that the steady state CFD accurately predicted the flow phenomena until the onset of surge. However, the unsteady flow features could not propagate through the diffuser because of the limitations of the impeller-diffuser interface modeling in the steady state analysis.

References

References
1.
Sorokes
,
J. M.
,
2003
, “
Range Versus Efficiency: A Dilemma for Compressor Designers and Users
,”
ASME
Paper No. IMECE2003-55223.10.1115/IMECE2003-55223
2.
Sorokes
,
J. M.
, and
Marshall
,
D. F.
,
2000
, “
A Review of Aerodynamically Induced Forces Acting on Centrifugal Compressors, and Resulting Vibration Characteristics of Rotors
,”
29th Turbomachinery Symposium Proceedings
, Houston, TX, September 18–21.
3.
Denton
,
J. D.
,
2010
, “
Some Limitations of Turbomachinery CFD
,”
ASME
Paper No. GT2010-22540.10.1115/GT2010-22540
4.
Sorokes
,
J. M.
,
Pacheco
,
J. E.
,
Vezier
,
C.
, and
Fakhri
,
S.
,
2012
, “
An Analytical and Experimental Assessment of a Diffuser Flow Phenomenon as a Precursor To Stall
,”
ASME
Paper No. GT2012-69122.10.1115/GT2012-69122
5.
Kowalski
,
S. C.
,
Pacheco
,
J. E.
,
Fakhri
,
S.
, and
Sorokes
,
J. M.
,
2012
, “
Centrifugal Stage Performance Prediction and Validation for High Mach Number Applications
,”
41st Turbomachinery Symposium Proceedings
, Houston, TX, September 25–27.
6.
Mangani
,
L.
, and
Mauri
,
S.
,
2011
, “
Assessment of Various Turbulence Models in a High Pressure Ratio Centrifugal Compressor With an Object Oriented CFD Code
,”
ASME
Paper No. GT2011-46829.10.1115/GT2011-46829
7.
Guidotti
,
E.
,
Tapinassi
,
L.
,
Toni
,
L.
,
Bianchi
,
L.
,
Gaetani
,
P.
, and
Persico
,
G.
,
2011
, “
Experimental and Numerical Analysis of the Flow Field in the Impeller of a Centrifugal Compressor Stage at a Design Point
,”
ASME
Paper No. GT2011-45036.10.1115/GT2011-45036
8.
Senoo
,
Y.
, and
Kinoshita
,
Y.
,
1977
, “
Influence of Inlet Flow Conditions and Geometries of Centrifugal Vaneless Diffusers on Critical Flow Angles For Reverse Flow
,”
ASME J. Fluids Eng.
,
99
(1), pp.
98
103
.10.1115/1.3448577
9.
Senoo
,
Y.
, and
Kinoshita
,
Y.
,
1978
, “
Limits of Rotating Stall and Stall in Vaneless Diffusers of Centrifugal Compressors
,” ASME Paper No. 78-GT-19.
10.
Kobayashi
,
H.
,
Nishida
,
H.
,
Takagi
,
T.
, and
Fukushima
,
Y.
,
1990
, “
A Study on the Rotating Stall of Centrifugal Compressors: 2nd Report, Effect of Vaneless Diffuser Inlet Shape on Rotating Stall
,”
Trans. JSME (B Edition)
,
56
(
529
), pp.
2646
2651
.10.1299/kikaib.56.2646
11.
Aungier
,
R. H.
,
1995
, “
A Fast, Accurate Real Gas Equation of State for Fluid Dynamic Analysis Applications
,”
ASME J. Fluids Eng.
,
117
(2), pp.
277
281
.10.1115/1.2817141
12.
El-Behery
,
S. M.
, and
Hamed
,
M. H.
,
2009
, “
A Comparative Study of Turbulence Models Performance for Turbulent Flow in a Planar Asymmetric Diffuser
,”
Proc. World Academy of Science, Eng. Technol.
,
53
, pp.
769
780
.
13.
Anciger
,
D.
,
Jung
,
A.
, and
Aschenbrenner
,
T.
, 2010, “
Prediction of Rotating Stall and Cavitation Inception in Pump Turbines
,”
25th IAHR Symposium on Hydraulic Machinery and Systems
, Timişoara, Romania, September 20–24.10.1088/1755-1315/12/1/012013
14.
ASME
,
1997
,
PTC 10
,
Performance Test Code on Compressors and Exhausters
,
ASME Press
, New York.
15.
American Petroleum Institute
,
2009
, API Std 617, “
Axial and Centrifugal Compressors and Expander-Compressors for Petroleum, Chemical and Gas Industry Services
,”
7th ed
., Paper No. API Std. 617.
You do not currently have access to this content.