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Research Papers: Flows in Complex Systems

Experimental Investigation on Unsteady Pressure Pulsation in a Centrifugal Pump With Special Slope Volute

[+] Author and Article Information
Ning Zhang

School of Energy and Power Engineering,
Jiangsu University,
Zhenjiang 212013, China
e-mail: zhangningwlg@163.com

MinGuan Yang

School of Energy and Power Engineering,
Jiangsu University,
Zhenjiang 212013, China
e-mail: mgyang@ujs.edu.cn

Bo Gao

School of Energy and Power Engineering,
Jiangsu University,
Zhenjiang 212013, China
e-mail: gaobo@ujs.edu.cn

Zhong Li

School of Energy and Power Engineering,
Jiangsu University,
Zhenjiang 212013, China
e-mail: lizhong@ujs.edu.cn

Dan Ni

School of Energy and Power Engineering,
Jiangsu University,
Zhenjiang 212013, China
e-mail: nxm0424@163.com

1Corresponding author.

Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received August 5, 2014; final manuscript received January 11, 2015; published online March 11, 2015. Assoc. Editor: Bart van Esch.

J. Fluids Eng 137(6), 061103 (Jun 01, 2015) (10 pages) Paper No: FE-14-1426; doi: 10.1115/1.4029574 History: Received August 05, 2014; Revised January 11, 2015; Online March 11, 2015

Rotor–stator interaction, a major source of high amplitude pressure pulsation and flow-induced vibration in the centrifugal pump, is detrimental to stable operation of pumps. In the present study, a slope volute is investigated to explore an effective method to reduce high pressure pulsation level, and its influence on flow structures is analyzed using numerical simulation. The stress is placed on experimental investigation of unsteady pressure pulsation inside the slope volute pump. For that purpose, pressure pulsations are extracted at nine locations along the slope volute casing covering sensitive pump regions. Results show that distinct pressure pulsation peaks at fBPF, together with nonlinear components are captured. These peaks are closely related to the position of pressure transducer and operating conditions of the pump. The improvement of rotational speed of the impeller results in rapid increase of pressure fluctuation amplitude at fBPF and corresponding root mean square (RMS) value within 10–500 Hz. A comparison with conventional spiral volute pump is implemented as well, and it is demonstrated that slope volute contributes significantly to the decline of pressure pulsation level.

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References

Brennen, C. E., 1994, Hydrodynamics of Pumps, Concept ETI Inc./Oxford University Press, White River Junction, VT/Oxford, UK.
Spence, R., and Aaral-Teixeira, J., 2009, “A CFD Parametric Study of Geometrical Variations on the Pressure Pulsations and Performance Characteristics of a Centrifugal Pump,” Comput. Fluids., 38(6), pp. 1243–1257. [CrossRef]
Spence, R., and Aaral-Teixeira, J., 2008, “Investigation into Pressure Pulsations in a Centrifugal Pump Using Numerical Methods Supported by Industrial Tests,” Comput. Fluids., 37(6), pp. 690–704. [CrossRef]
Yao, Z. F., Wang, F. J., Qu, L. X., Xiao, R. F., He, C. L., and Wang, M., 2011, “Experimental Investigation of Time-Frequency Characteristics of Pressure Fluctuations in a Double-Suction Centrifugal Pump,” ASME J. Fluids Eng., 133(10), p.101303. [CrossRef]
Barrio, R., Parrondo, J., and Blanco, E., 2010, “Numerical Analysis of the Unsteady Flow in the Near-Tongue Region in a Volute-Type Centrifugal Pump for Different Operating Points,” Comput. Fluids., 39(5), pp. 859–870. [CrossRef]
Barrio, R., Blanco, E., Parrondo, J., and González, J., 2008, “The Effect of Impeller Cutback on the Fluid-Dynamic Pulsations and Load at the Blade-Passing Frequency in a Centrifugal Pump,” ASME J. Fluids Eng., 130(11), p. 111102. [CrossRef]
Parrondo, J. L., González, J., and Fernández, J., 2002, “The Effect of the Operating Point on the Pressure Fluctuations at the Blade Passage Frequency in the Volute of a Centrifugal Pump,” ASME J. Fluids Eng., 124(3), pp. 784–790. [CrossRef]
Yang, S. S., Liu, H. L., Kong, F. Y., Xia, B., and Tan, L. W., 2014, “Effects of the Radial Gap Between Impeller Tips and Volute Tongue Influencing the Performance and Pressure Pulsations of Pump as Turbine,” ASME J. Fluids Eng., 136(5), p. 054501. [CrossRef]
Yang, S. S., Kong, F. Y., and Chen, H., 2012, “Effects of Blade Wrap Angle Influencing Pump as Turbine,” ASME J. Fluids Eng., 134(2), p. 061102. [CrossRef]
Khalifa, A., Al-Qutub, A., and Ben-Mansour, R., 2011, “Study of Pressure Fluctuations and Induced Vibration at Blade-Passing Frequencies of a Double Volute Pump,” Arabian J. Sci. Eng., 36(7), pp. 1333–1345. [CrossRef]
Solis, M., Bakir, F., and Khelladi, S., 2009, “Pressure Fluctuations Reduction in Centrifugal Pumps: Influence of Impeller Geometry and Radial Gap,” Proceedings of the ASME Fluids Engineering Division Summer Conference (FEDSM’09), Vol. 1, PTS A-C, Paper No. 78240, pp. 253–265.
Jürgen, H., 2009, “The Hygienic Self-Priming GEA Tuchenhagen Variflow Centrifugal Pump of the TPS Series,” Trends Food Sci. Technol., 20, pp. 85–87. [CrossRef]
Zhang, N., Yang, M. G., Gao, B., Li, Z., and Ni, D., 2014, “Unsteady Pressure Pulsation and Rotating Stall Characteristics in a Centrifugal Pump With Slope Volute,” Adv. Mech. Eng., 6, p. 710791. [CrossRef]
Zhang, N., Yang, M. G., Gao, B., and Li, Z., 2013, “Unsteady Phenomena Induced Pressure Pulsation and Radial Load in a Centrifugal Pump With Slope Volute,” Proceedings of the ASME Fluids Engineering Division Summer Conference (FEDSM’13), Incline Village, NV, Paper No. 16297, pp. 1–7.
Lucius, A., and Brenner, G., 2011, “Numerical Simulation and Evaluation of Velocity Fluctuations During Rotating Stall of a Centrifugal Pump,” ASME J. Fluids Eng., 133(8), p. 081102. [CrossRef]
Gao, Z. X., Zhu, W. R., Lu, L., Deng, J., Zhang, J. G., and Wang, F. J., 2014, “Numerical and Experimental Study of Unsteady Flow in a Large Centrifugal Pump With Stay Vanes,” ASME J Fluids Eng., 136(7), p. 071101. [CrossRef]
Choi, J. S., McLaughlin, D. K., and Thompson, D. E., 2003, “Experiments on the Unsteady Flow Field and Noise Generation in a Centrifugal Pump Impeller,” J. Sound Vib., 263(3), pp. 493–514. [CrossRef]
Pavesi, G., Cavazzini, and Ardizzon, G., 2008, “Time-Frequency Characterization of the Unsteady Phenomena in a Centrifugal Pump,” Int. J. Heat Fluid Flow., 29(5), pp. 1527–1540. [CrossRef]
Akin, O., and Rockwell, D. O., 1994, “Actively Controlled Radial Flow Pumping System: Manipulation of Spectral Content of Wakes and Wake-Blade Interactions,” ASME J. Fluids Eng., 116(3), pp. 528–537. [CrossRef]
Akin, O., and Rockwell, D. O., 1994, “Flow Structure in a Radial Flow Pumping System Using High-Image-Density Particle Image Velocimetry,” ASME J. Fluids Eng., 116(3), pp. 538–544. [CrossRef]
Stel, H., Amaral, G. D. L., Negrão, C. O. R., Chiva, S., Estevam, V., and Morales, R. E. M., 2013, “Numerical Analysis of the Fluid Flow in the First Stage of a Two-Stage Centrifugal Pump With a Vaned Diffuser,” ASME J. Fluids Eng., 135(7), p. 071104. [CrossRef]
Pei, J., Yuan, S., Benra, F. K., and Dohmen, H. J., 2012, “Numerical Prediction of Unsteady Pressure Field Within the Whole Flow Passage of a Radial Single-Blade Pump,” ASME J. Fluids Eng., 134(10), p. 101103. [CrossRef]
Trivedi, C., Cervantes, M. J., Gandhi, B. K., and Dahlhaug, O. G., 2014, “Transient Pressure Measurements on a High Head Model Francis Turbine During Emergency Shutdown, Total Load Rejection, and Runaway,” ASME J. Fluids Eng., 136(12), p. 121107. [CrossRef]
Wu, Y. H., Wu, J. F., Zhang, G. G., and Chu, W. L., 2014, “Experimental and Numerical Investigation of Flow Characteristics Near Casing in an Axial Flow Compressor Rotor at Stable and Stall Inception Conditions,” ASME J. Fluids Eng., 136(11), p. 111106. [CrossRef]

Figures

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Fig. 1

Structure comparison of the slope volute and the conventional spiral volute

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Fig. 2

Configurations of cross section changing of two volutes

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Fig. 3

Comparison of cross section areas between two volutes

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Fig. 4

Closed test platform

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Fig. 5

Configuration of pressure transducers mounted on the slope volute

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Fig. 6

Performance of the model pump

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Fig. 7

Absolute velocity distributions on the sixth cross section at different flow rates inside two volutes

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Fig. 8

Comparison of flow structures of two pumps under Фd: (a) relative velocity at impeller middle section, (b) absolute velocity at the sixth cross section, and (c) absolute velocity around the volute tongue

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Fig. 9

Unsteady pressure signals of sensor p7 at four typical flow rates

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Fig. 10

Pressure spectra of pressure sensors p3 and p7 at different flow rates

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Fig. 11

RMS trends of different measuring points versus flow rate

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Fig. 12

Angle distributions of pressure amplitudes at fBPF along the slope volute casing for different flow rates

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Fig. 13

Pressure amplitudes at distinct peaks fR and 3fBPF versus flow rate

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Fig. 14

Pressure spectra of p3 at three rotational speeds under nominal flow rate

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Fig. 15

Influence of rotational speed on pressure pulsation at three different flow rates: (a) RMS value in 10–500 Hz frequency band and (b) amplitude at fBPF

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Fig. 16

Detail of pressure transducers mounting on the conventional spiral volute

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Fig. 17

Comparison of amplitudes at fBPF between two pumps at various flow rates

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Fig. 18

Comparison of RMS values between two pumps

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