Advances in Flow Control Methods for Pump-Stall Suppression: Passive and Active Approaches

Hongbo Zhao, Xiangkai Zhou, Long Meng (), Xuejin Zhu, Chengqi Mou and Peijian Zhou ()
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Hongbo Zhao: College of Metrology Measurement and Instrument, China Jiliang University, Hangzhou 310018, China
Xiangkai Zhou: College of Metrology Measurement and Instrument, China Jiliang University, Hangzhou 310018, China
Long Meng: Key Laboratory of River Basin Digital Twinning of Ministry of Water Resources, China Institute of Water Resources and Hydropower Research, Beijing 100038, China
Xuejin Zhu: Depamu (Hangzhou) Pumps Technology Co., Ltd., Hangzhou 310018, China
Chengqi Mou: Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
Peijian Zhou: College of Metrology Measurement and Instrument, China Jiliang University, Hangzhou 310018, China

Energies, 2024, vol. 17, issue 23, 1-22

Abstract: This article provides a comprehensive review of key approaches to suppressing stall flow in pumps, offering insights to enhance pump performance and reliability. It begins by outlining the formation mechanisms and characteristics of stalls, followed by an in-depth analysis of various stall types. The discussion highlights passive and active flow control methods, emphasizing their roles in suppressing stall phenomena. Passive flow-control strategies, including surface roughness, grooves, obstacles, fixed guide vanes, and vortex generators, are examined with a focus on their mechanisms and effectiveness in suppressing stall. Similarly, active flow-control techniques, such as jets and adjustable guide vanes, are explored for their capacity to regulate the flow field and suppress stall. The novelty of this review lies in its exploration of the effectiveness of passive and active flow-control methods in suppressing pump stall, with a focus on their mechanisms of action and the underlying principles of stall formation. The findings reveal that appropriate flow-control measures can mitigate laminar flow separation and reduce performance losses associated with stall. However, careful attention must be given to the optimal arrangement of control devices. Finally, the article highlights the limitations of current implementations of combined active and passive flow-control methods while offering insights into the future potential of advanced flow-control technologies in regard to suppressing stall.

Keywords: pump; stall; passive flow control; active flow control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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