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Investigation of unsteady pressure fluctuations and methods for its suppression for a double suction centrifugal pump

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  • Sonawat, Arihant
  • Kim, Sung
  • Ma, Sang-Bum
  • Kim, Seung-Jun
  • Lee, Ju Beak
  • Yu, Myo Suk
  • Kim, Jin-Hyuk

Abstract

Double suction centrifugal pumps find their usage in a variety of applications because of their ability to deliver good performance at higher flowrates and heads. The main issue with these devices is the occurrence of large pressure pulsations which cause noise, vibration, and unstable operation. The present work makes an effort using steady and unsteady computational fluid dynamics (CFD) approach to minimize these pulsations and also to improve the hydraulic performance of the considered pump. The CFD methodology and obtained results were validated by the experimental data to ensure reliability of the study. Fast Fourier Transform (FFT) analysis was performed to calculate the amplitude of these pressure pulsations. A parametric study was undertaken to find the effect of impeller stagger angles in reducing these pulsations and finding the most desirable stagger angle. Then, the performance of reference non-staggered impeller design was evaluated with the use of split volute arrangement and its comparison was done with the staggered impeller design. Finally, a combination of staggered impeller design with the split volute arrangement was tested to find its utility in suppressing pressure pulsations. It was observed that the best hydraulic performance could be obtained by the staggered 30° design with reduced pulsations; however, the least pressure pulsations were delivered by the combination of staggered 30° design with the split volute. The use of CFD helped in better visualization of the inherent flow physics associated with these designs.

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  • Sonawat, Arihant & Kim, Sung & Ma, Sang-Bum & Kim, Seung-Jun & Lee, Ju Beak & Yu, Myo Suk & Kim, Jin-Hyuk, 2022. "Investigation of unsteady pressure fluctuations and methods for its suppression for a double suction centrifugal pump," Energy, Elsevier, vol. 252(C).
    • Handle: RePEc:eee:energy:v:252:y:2022:i:c:s0360544222009239
    DOI: 10.1016/j.energy.2022.124020
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    References listed on IDEAS

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    1. Faye Jin & Zhifeng Yao & Duanming Li & Ruofu Xiao & Fujun Wang & Chenglian He, 2019. "Experimental Investigation of Transient Characteristics of a Double Suction Centrifugal Pump System during Starting Period," Energies, MDPI, vol. 12(21), pages 1-28, October.
    2. Sonawat, Arihant & Choi, Young-Seok & Kim, Kyung Min & Kim, Jin-Hyuk, 2021. "Parametric study on the effect of inlet and outlet pipe shape on the flow fluctuation characteristics associated with a positive displacement hydraulic turbine," Renewable Energy, Elsevier, vol. 163(C), pages 1046-1062.
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    4. Sonawat, Arihant & Kim, Seung-Jun & Yang, Hyeon-Mo & Choi, Young-Seok & Kim, Kyung-Min & Lee, Yong-Kab & Kim, Jin-Hyuk, 2020. "Positive displacement turbine - A novel solution to the pressure differential control valve failure problem and energy utilization," Energy, Elsevier, vol. 190(C).
    5. Wang, Zhiyuan & Qian, Zhongdong & Lu, Jie & Wu, Pengfei, 2019. "Effects of flow rate and rotational speed on pressure fluctuations in a double-suction centrifugal pump," Energy, Elsevier, vol. 170(C), pages 212-227.
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    Cited by:

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    4. Gu, Yandong & Bian, Junjie & Wang, Qiliang & Stephen, Christopher & Liu, Benqing & Cheng, Li, 2024. "Energy performance and pressure fluctuation in multi-stage centrifugal pump with floating impellers under various axial oscillation frequencies," Energy, Elsevier, vol. 307(C).
    5. Fernández Oro, J.M. & Barrio Perotti, R. & Galdo Vega, M. & González, J., 2023. "Effect of the radial gap size on the deterministic flow in a centrifugal pump due to impeller-tongue interactions," Energy, Elsevier, vol. 278(PA).
    6. Ren, Zhipeng & Li, Deyou & Li, Zhipeng & Wang, Hongjie & Liu, Jintao & Qu, Zhen & Li, Yong, 2024. "Spatial-temporal evolution mechanism of mass transfer under synergetic gaseous and vapour cavitating effects in a micropump," Energy, Elsevier, vol. 286(C).
    7. Miao, Senchun & Tan, Xingxing & Luo, Wen & Wang, Xiaohui & Yang, Junhu, 2024. "The mechanism of internal energy losses in double- suction centrifugal pumps under direct and reverse conditions," Energy, Elsevier, vol. 306(C).
    8. Federico Fontana & Massimo Masi, 2023. "A Hybrid Experimental-Numerical Method to Support the Design of Multistage Pumps," Energies, MDPI, vol. 16(12), pages 1-20, June.
    9. Zhang, Chenying & Wang, Wenjie & Pavesi, Giorgio & Yuan, Shouqi & Pei, Ji, 2024. "Research on the mechanism of severe unsteadiness of PAT braking condition during the power failure," Renewable Energy, Elsevier, vol. 232(C).
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