Sage Journals: Discover world-class research

Abstract

The paper describes an experimental investigation on stall inception phenomena in a single-stage axial-flow pump, utilizing an oil flow technique and two different photo techniques. Moreover, the unsteady casing wall pressure was measured. Representative results are shown and discussed: the pump characteristic for two different NPSH values, selected oil flow pictures of the casing wall and the rotor blades, the wall pressure distribution at design, selected pictures of the cavitating core of the tip clearance vortex at stable and unstable operating conditions and the visualization of a cross-passage vortex as a deep stall phenomenon. These results allow a number of key features of the stall inception process to be identified and to be followed along the unstable part of the pump characteristic.

Keywords

axial-flow pump stall inception tip clearance vortex cross-passage vortex

Get full access to this article

View all access options for this article.

References

Inoue

Kuroumaru

Fukuhara

Behavior of tip leakage flow behind an axial compressor rotor. Trans. ASME, J. Engng for Gas Turbines and Power, 1986, 108, 7–14.

Inoue

Kuroumaru

Structure of tip clearance flow in an isolated axial flow compressor rotor. Trans. ASME, J. Turbomach., 1984, 111, 250–256.

Storer

J. A.

Cumpsty

N. A.

Tip leakage flow in axial compressors. Trans. ASME, J. Turbomach., 1991, 113, 252–259.

Chen

G. T.

Greitzer

E. M.

Tan

C. S.

Marble

F. E.

Similarity analysis of compressor tip clearance flow structure. Trans. ASME, J. Turbomach., 1991, 113, 260–271.

Furukawa

Inoue

Saiki

Yamada

The role of tip clearance vortex breakdown in compressor rotor aerodynamics. Trans. ASME, J. Turbomach., 1999, 121, 464–480.

Furukawa

Saiki

Yamada

Inoue

Unsteady flow behavior due to breakdown of tip leakage vortex in an axial compressor rotor at near-stall condition. ASME paper 2000-GT-666, 2000.

Inoue

Kuroumaru

Tanino

Furukawa

Propagation of multiple short-length-scale stall cells in an axial compressor rotor. Trans. ASME, J. Turbomach., 2000, 122, 45–54.

Saathoff

Stark

Tip clearance flow in a low-speed compressor and cascade. Conference Proceedings of 4th European Conference on Turbomachinery-Fluid Dynamics and Thermodynamics, Firenze, Italy, 2001, 81–91.

Inoue

and Furukawa, M. Physics of tip clearance flow in turbomachinery. FEDSM paper 2002-31184, 2002.

10.

Rains

D. A.

Tip clearance flow in axial flow compressors and pumps. Hydrodynamics and Mechanical Engineering Laboratories, California Institute of Technology, Report 5, 1954.

11.

Straka

W. A.

Farrell

K. J.

The effect of spatial wandering on experimental laser velocimeter measurements of the end-wall vortices in an axial-flow pump. Experiments in Fluids, 1992, Vol. 13, pp. 163–170 (Springer-Verlag).

12.

Farrell

K. J.

Billet

M. W.

A correlation of leakage vortex cavitation in axial-flow pumps. Trans. ASME, J. Fluids Engng, 1994, 116, 551–557.

13.

Zierke

W. C.

Farrell

K. J.

Straka

W. A.

Measurements of the tip clearance flow for a high-Reynolds-number axial-flow rotor. Trans. ASME, J. Turbomach., 1995, 117, pp. 522–532.

14.

Bross

Brodersen

Saathoff

Stark

Experimental and theoretical investigation of the tip clearance flow in an axial flow pump. In Proceedings of the 2nd European Conference on Turbomachinery-Fluid Dynamics and Thermodynamics, Antwerp, Belgium, 1997, pp. 357–364.

15.

Tobak

M. T.

Peake

D. J.

Topology of three-dimensional separated flows. Annu. Rev. Fluid Mechanics, 1982, 14, 61–85.

16.

Lambourne

N. C.

Bryer

D. W.

The bursting of leadingedge vortices-some observations and discussion of the phenomenon. ARC RM 3282, 1962.

17.

Hall

M. G.

Vortex breakdown. Annu. Rev. Fluid Mechanics, 1972, 4, 195–218.

18.

Schlechtriem

Lötzerich

Breakdown of tip leakage vortices in compressors at flow conditions close to stall. ASME paper 97-GT-41, 1997.

19.

Hofmann

Ballmann

Tip clearance vortex development and shock-vortex-interaction in a transonic axial compressor rotor. 40th AIAA Aerospace Science Meeting and Exhibit, Reno, USA, paper 2002-0083, 2002.

20.

Pfleiderer

Strömungsmaschinen, 2nd edition, 1957, p. 201 (Springer-Verlag, Berlin).

21.

Brennen

Ch. E.

Hydrodynamics of Pumps, 1994, pp. 58–61 (Oxford University Press, Oxford).

Stall inception phenomena in a single-stage axial-flow pump

Abstract

Abstract

Keywords

Get full access to this article

References