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TECHNICAL PAPERS

The Effect of the Operating Point on the Pressure Fluctuations at the Blade Passage Frequency in the Volute of a Centrifugal Pump

[+] Author and Article Information
Jorge L. Parrondo-Gayo, José González-Pérez, Joaquı́n Fernández-Francos

Universidad de Oviedo, Área de Mecánica de Fluidos, Campus de Viesques, 33204 Gijón (Asturias), Spain

J. Fluids Eng 124(3), 784-790 (Aug 19, 2002) (7 pages) doi:10.1115/1.1493814 History: Received June 08, 2001; Revised March 29, 2002; Online August 19, 2002
Copyright © 2002 by ASME
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References

Stepanoff, A. J., 1957, Centrifugal and Axial Flow Pumps (2nd ed.), J. Wiley, New York.
Lézé, F., Besombes, M., Tourret, J., Pluviose, M., and Bertinier, M., 1992, “Visualization of the Dynamic Pressure Field in a Centrifugal Fan in the Study of Noise Generation Mechanisms,” Proc. of Fan Noise Symposium, Senlis, France, pp. 213–220.
Chu,  S., Dong,  R., and Katz,  J., 1995, “Relationship Between Unsteady Flow, Pressure Fluctuations, and Noise in a Centrifugal Pump; Part A: Use of PDV Data to Compute the Pressure Field,” ASME J. Fluids Eng., 117, pp. 24–29.
Chu,  S., Dong,  R., and Katz,  J., 1995, “Relationship Between Unsteady Flow, Pressure Fluctuations, and Noise in a Centrifugal Pump; Part B: Effects of Blade-Tongue Interaction,” ASME J. Fluids Eng., 117, pp. 30–35.
Dong,  R., Chu,  S., and Katz,  J., 1997, “Effect of Modification to Tongue and Impeller Geometry on Unsteady Flow, Pressure Fluctuations, and Noise in a Centrifugal Pump,” ASME J. Turbomach., 119, pp. 506–515.
Morgenroth,  M., and Weaver,  D. S., 1998, “Sound Generation by a Centrifugal Pump at Blade Passing Frequency,” ASME J. Turbomach., 120, pp. 736–743.
Kaupert,  K. A., and Staubli,  T., 1999, “The Unsteady Pressure Field in a High Specific Speed Centrifugal Pump Impeller. Part I: Influence of the Volute,” ASME J. Fluids Eng., 121, pp. 621–626.
Parrondo, J. L., Fernández, J., Santolaria, C., and González, J., 1996, “Measurements in the Dynamic Pressure Field of the Volute of a Centrifugal Pump,” Proc. XVIII IAHR Symposium on Hydraulic Machinery and Cavitation, E. Cabrera et al., eds., Kluwer Academic Publishers, Dordrecht, Netherlands, pp. 401–410.
Turner, J. D., and Pretlove, A. J., 1991, Acoustics for Engineers, MacMillan Education Ltd, Houndmills, UK, pp. 142–149.

Figures

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(a) Sketch of the test pump showing location of the pressure taps; (b) detail of pressure transducer mounting; (c) detail of impeller outlet (all dimensions in mm)
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Experimental test loop (all dimensions in m). Valve V5 was always closed.
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Performance curves of the pump (head and efficiency)
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Steady-static pressure distribution along the volute (front side) as a function of flow-rate
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Pressure pulsations magnitude (zero-to-peak) spectrum as a function of flow-rate for positions φ=−10 and φ=20 deg (position R in Fig. 1)
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Normalized amplitude (zero to peak) of pressure fluctuation (blade passage frequency) at position R(φ=20 deg) as a function of flow rate for different pump rotational speeds
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Normalized amplitude (zero-to-peak) of pressure fluctuation (blade passage frequency) along the volute as a function of flow-rate
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Time history of the pressure coefficient distribution along the volute (blade passage frequency component) between the passage of two blades, for several flow-rates
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Comparison of the experimental and theoretical amplitude (zero-to-peak) of the pressure fluctuations coefficient at the blade passage frequency for several flow rates

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