In order to control and suppress performance curve instability characterized by the positive slope of head-capacity curve of a mixed flow pump, a very simple passive method utilizing shallow grooves mounted on a casing wall parallel to the pressure gradient (J-groove) is proposed. The optimum groove dimension and location for suppressing such an instability are determined experimentally. Results show that shallow grooves of adequate dimension and proper location can suppress such instability perfectly without decreasing the pump maximum efficiency. The remarkable effect of shallow grooves is to decrease both the swirl strength and the propagation of reverse flow at the impeller inlet region, through angular momentum absorption owing to mixing of groove reverse flow and swirl flow, yielding recovery of impeller theoretical head. [S0098-2202(00)02603-1]
Issue Section:
Technical Papers
1.
Kurokawa
, J.
, Kamijo
, K.
, and Shimura
, T.
, 1994
, “Axial Thrust Behavior in LOX-Pump of Rocket Engine
,” AIAA J. Propulsion Power
, 10
, No. 2
, pp. 244
–250
.2.
Greitzer
, E. M.
, 1981
, “The Stability of Pumping System
,” ASME J. Fluids Eng.
, 103
, pp. 193
–242
.3.
Hergt, P., and Starke, J., 1985, “Flow Patterns Causing Instabilities in the Performance Curves of Centrifugal Pumps with Vaned Diffusers,” Proceedings 2nd International Symposium, Texas A & M Univ., pp. 67–75.
4.
Kurokawa, J., Kitahora, T., and Jiang, J., 1994, “Performance Prediction of Mixed-Flow Pumps Using Inlet Reverse Flow Model,” Proceedings 17th IAHR Symp., Beijing, Vol. 1, pp. 177–188.
5.
Kurokawa, J., 1992, “Performance Curve Instability of a Diffuser Pump Due to a Rotating Stall and Some Control Method,” Proceedings of the 16th IAHR Symposium, Sao Paulo, Vol. 2, pp. 723–732.
6.
Goto
, A.
, 1994
, “Suppression of Mixed-Flow Pump Instability and Surge by the Active Alteration of Impeller Secondary Flows
,” ASME J. Turbomach.
, 116
, pp. 621
–628
.7.
Osborn, W. M., Lewis, Jr., G. W., and Heidelberg, L. J., 1971, “Effect of Several Porous Casing Treatments on Stall Limit and on Overall Performance of an Axial-Flow Compressor Rotor,” NASA TN D-6537.
8.
Moore, R. D., Kovich, G., and Blade, R. J., 1971, “Effect of Casing Treatment on Overall and Blade-Element Performance of a Compressor Rotor,” NASA TN D-6538.
9.
Boyce, M. P., Schiller, R. N., and Desai, A. R., 1975, “Study of Casing Treatment Effects in Axial Flow Compressors,” ASME Paper No. 74-GT-89.
10.
Prince, D. C., Jr., Wisler, D. C., and Hilvers, D. E., 1975, “A Study of Casing Treatment Stall Margin Improvement Phenomena,” ASME Paper No. 75-GT-60.
11.
Amann
, C. A.
, Nordenson
, G. E.
, and Skellenger
, G. D.
, 1975
, “Casing Modification for Increasing the Surge Margin of a Centrifugal Compressor in an Automotive Turbine Engine
,” ASME J. Eng. Power
, 97
, pp. 329
–336
.12.
Takata
, H.
, and Tsukuda
, Y.
, 1977
, “Stall Margin Improvement by Casing Treatment—Its Mechanism and Effectiveness
,” ASME J. Eng. Power
, 99
, pp. 121
–133
.13.
Greitzer
, E. M.
, Nikkanen
, J. P.
, Haddad
, D. E.
, Mazzaway
, R. S.
, and Joslyn
, H. D.
, 1979
, “A Fundamental Criterion for the Application of Rotor Casing Treatment
,” ASME J. Fluids Eng.
, 101
, pp. 237
–243
.14.
Smith
, G. D. J.
, and Cumptsy
, N. A.
, 1984
, “Flow Phenomena in Compressor Casing Treatment
,” ASME J. Eng. Gas Turbines Power
, 106
, pp. 532
–541
.15.
Fujita
, H.
, and Takata
, H.
, 1984
, “A Study on Configurations of Casing Treatment for Axial Flow Compressors
,” Bull. JSME
, 27
, pp. 1675
–1681
.16.
Miyake
, Y.
, Noji
, I.
, Nishikawa
, Y.
, and Murata
, S.
, 1985
, “The Performance Characteristic of an Air-Separator of an Axial Flow Fan
,” Bull. JSME
, 28
, pp. 1659
–1666
.17.
Miyake
, Y.
, Inaba
, T.
, and Kato
, T.
, 1987
, “Improvement of Unstable Characteristics of an Axial Flow Fan by Air-Separator Equipment
,” ASME J. Fluids Eng.
, 109
, pp. 36
–40
.18.
Azimian
, A. R.
, Elder
, R. L.
, and McKenzie
, A. B.
, 1990
, “Application of Recess Vaned Casing Treatment to Axial Flow Fans
,” ASME J. Turbomach.
, 112
, pp. 145
–150
.19.
Smith
, Jr., L. H.
, 1994
, “NASA/GE Fan and Compressor Research Accomplishments
,” ASME J. Turbomach.
, 116
, pp. 555
–569
.20.
Kurokawa
, J.
, Saha
, S. L.
, Matsui
, J.
, and Kitahora
, T.
, 2000
, “Passive Control of Rotating Stall in a Parallel-Wall Vaneless Diffuser by Radial Grooves
,” ASME J. Fluids Eng.
, 122
, pp. 90
–97
.21.
Kurokawa, J., Saha, S. L., Matsui, J., and Kitahora, T., 1997, “A New Passive Control of Rotating Stall in Vaneless and Vaned Diffusers by Shallow Grooves,” Proceedings of International Conference on Fluid Engineering, Tokyo, Vol. 2, pp. 1109–1114.
Copyright © 2000
by ASME
You do not currently have access to this content.
