A Systematical Study of the Influence of Blade Number on the Performance of a Side Channel Pump

Fleder, Annika; Böhle, Martin

doi:10.1115/1.4043166

Cited by 18 publications

(4 citation statements)

References 6 publications

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“…Geometric recommendations were put forward to reducing vibration and increasing component life through the reductions in pressure pulsations. Fleder and Böhle [20] investigated the effect of blade number on the flow characteristics and performance of different pumps by CFD simulations and experiments. It is shown that the number of blades has a significant influence on the circulation velocity and flow angles between blades and side channel.…”

Section: Introductionmentioning

confidence: 99%

Multiobjective Optimization Design and Experimental Investigation on the Axial Flow Pump with Orthogonal Test Approach

Zhang

Zheng

et al. 2019

Complexity

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A multiobjective optimization technique based on the computational uid dynamics (CFD) simulations and the orthogonal test is proposed to reduce the pressure pulsation in this paper. ree levels of four well-known performance factors L 9 (3 4 ) were considered in the orthogonal test scheme: the number of blades, the blade setting angle, the hub ratio, and the distance between the blade and the guide vane. e evaluation indexes corresponded to the head, e ciency, shaft power, and pressure pulsation, respectively. An optimal con guration A 2 B 1 C 2 D 3 was obtained by comprehensive frequency analysis method, after intuitive and range analysis. In comparison with the nonoptimized model, the new design's head and e ciency increased by 17.8% and 4.26%, whilst the shaft power and the pressure pulsation coe cient reduced by 1.22% and 11%, respectively. Experiments conducted on the optimized pump were consistent with the CFD model. Six di erent rotational speed conditions in the optimal operating points were numerically calculated in order to explore the internal hydraulic characteristics of the optimized axial ow pump. It is veri ed that the comprehensive frequency analysis method based on the orthogonal test approach is e ective for the multiobjective optimization of the axial ow pump.

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Section: Introductionmentioning

confidence: 99%

Multiobjective Optimization Design and Experimental Investigation on the Axial Flow Pump with Orthogonal Test Approach

Zhang

Zheng

et al. 2019

Complexity

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“…While vortex pumps provide high head, the internal vortices cause significant energy dissipation [14,15], leading to generally low efficiency values for these pumps. Therefore, controlling energy dissipation within vortex pumps to enhance their performance has been a significant research focus for many scholars.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Analysis of Vortex Pump with Various Axial Clearances

Zhou,

Bai

et al. 2024

Water

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Axial clearance is a critical parameter affecting the performance of vortex pumps. In this study, numerical simulation and experimental validation methods are employed to establish four different clearance schemes. The analysis focuses on multiple aspects, including the internal flow field, clearance flow field, leakage flow, and recirculation flow, to investigate the impact of axial clearance on the internal flow field and the external characteristics of the vortex pump. The results indicate that under the pressure difference between the inlet and outlet, the main flow leaks from the high-pressure region at the outlet to the clearance flow channel, and the clearance flow returns to the main flow channel at the low-pressure region of the inlet. As the axial clearance increases, the intensity of the vortices inside the pump gradually decreases. This leads to a reduction in intensity of the momentum exchange between the fluid inside and outside the impeller, causing a decline in the pump performance curve. Simultaneously, the increase in clearance reduces the flow resistance in the clearance region, and the clearance flow gradually stabilizes. The interaction between the clearance flow and the main flow intensifies, causing the leakage flow and recirculation flow to increase rapidly, which results in significant energy loss.

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“…Thus, energy losses are inevitable leading to its low efficiency usually less than 50%. Authors notably [29][30][31][32][33][34] have provided exhaustive studies on the complex flow patterns and performance optimization of side channel pumps. Fleder and Böhle 35 numerically and experimentally studied the influence of the blade shape on the performance of a side channel pump.…”

Section: Introductionmentioning

confidence: 99%

Study on the inner flow mechanisms and unsteady force distribution of side channel pump

Adu-Poku

Zhang

Appiah

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part A:

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Stability dynamics in pumps is a key problematic issue which needs to be critically looked at. For instance, in side channel pump, pressure fluctuations and unsteady forces characteristics are inevitable in the clearances and this strongly affects the flow and pressure stability. Therefore, the research work herein seeks to numerically investigate the pressure fluctuation intensity in the clearances and characterize the axial and radial forces distributions around the impeller under different blade suction angles. Three impeller schemes 1, 2, and 3 are modeled with blade suction angles 10°, 20°, and 30°, respectively. Based on the reliable standard SST k-ω turbulent flow model, the unsteady flow state of the side channel pump was obtained by numerical simulation and further verified by experiment results. Variations in amplitude and frequency at different monitoring points in the clearances were observed in both time and frequency domain for each impeller scheme. The findings elucidate that pressure fluctuation intensity in the clearances is significantly different for all the impeller schemes. Obvious asymmetrical distribution of fluctuation magnitudes was noticeable in the axial and radial clearance. Generally, the amplitude of pressure fluctuation intensity of impeller scheme 1 and 2 is substantially reduced compared to impeller scheme 3. Also, impeller scheme 1 exerts the smallest magnitude of axial and radial force. However, when the pump operates under impeller scheme 3, the amplitude of the forces increases significantly. This study provides a solid foundation for the reduction of pressure fluctuations, vibration, and noise performance in side channel pumps.

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A Systematical Study of the Influence of Blade Number on the Performance of a Side Channel Pump

Cited by 18 publications

References 6 publications

Multiobjective Optimization Design and Experimental Investigation on the Axial Flow Pump with Orthogonal Test Approach

Multiobjective Optimization Design and Experimental Investigation on the Axial Flow Pump with Orthogonal Test Approach

Numerical and Experimental Analysis of Vortex Pump with Various Axial Clearances

Study on the inner flow mechanisms and unsteady force distribution of side channel pump

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