Computational Methods of Erosion Wear in Centrifugal Pump: A State-of-the-Art Review

El-Emam, Mahmoud A.; Zhou, Lian; Yasser, Eman; Liu, Bai; Shi, Weidong

doi:10.1007/s11831-022-09714-x

Cited by 43 publications

(16 citation statements)

References 147 publications

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“…Figure 4 shows the dependence of the wear intensity of the impeller blades of a centrifugal pump 4K-8 (n 0 =2900 rpm) presented in [19,20]. Comparing the curves in fig.…”

Section: Fig 2 the Dependence Of The Intensity Of Wear Of The Impelle...mentioning

confidence: 99%

Influence of hydroabrasive wear of impeller blades on head of centrifugal pump

Uralov

Mutalov²,

Shakirov

et al. 2023

E3S Web of Conf.

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The results of experiments on studying the nature of changes in the concentration and dispersion of solid suspended particles showed that the highest average monthly sediment concentration is 2.5...3.8 kg/m3, and sometimes in rainy weather, the maximum water turbidity reaches 7kg/m3. In the composition of solid mechanical impurities, a significant amount consists of particles with a grain size of 0.1-0.05mm. Observations have established that particles larger than 0.01 mm at a low flow velocity in the supply channel and the water intake chamber of the pumping station were easily deposited in them. Siltation volumes at various stations ranged from 20 to 60%. As a result, the hydraulic resistance increased, which led to a decrease in the pump head. The wear of parts of centrifugal pumps in natural conditions was also studied, and the dependences of wear on the characteristic dimensions and duration of their operation are given. The results of micrometering of the working parts of the pumps showed that the blades of the impellers along the length and width wear out unevenly both in size and shape. This is explained by the fact that when the hydroabrasive flow moves in the interblade space, the kinetic energy of solid particles and their local concentration increase due to an increase in the values of centrifugal and Coriolis forces along the radius of the impeller.

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“…Figure 4 shows the dependence of the wear intensity of the impeller blades of a centrifugal pump 4K-8 (n 0 =2900 rpm) presented in [19,20]. Comparing the curves in fig.…”

Section: Fig 2 the Dependence Of The Intensity Of Wear Of The Impelle...mentioning

confidence: 99%

Influence of hydroabrasive wear of impeller blades on head of centrifugal pump

Uralov

Mutalov²,

Shakirov

et al. 2023

E3S Web of Conf.

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“…The research results of centrifugal pumps are relatively mature and systematic, while those of PAT are relatively lacking. With the intensification of global climate problems in recent years, PAT has become one of the research hotspots in the field of hydraulic machinery and energy-saving energy storage (Balacco et al, 2021;Cao et al, 2021;El-Emam et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of unsteady pressure pulsation characteristics in an ultra-low specific-speed centrifugal pump as a turbine

et al. 2023

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The unsteady flow characteristics of pump as hydraulic turbine play a vital role in its safe and stable operation, while the ultra-low specific-speed centrifugal pump may face more stability problems due to the limitations of its flow conditions under the turbine working condition. Therefore, in this study, the unsteady characteristics of an ultra-low specific-speed centrifugal pump under turbine conditions are studied using a numerical simulation method, and the numerical simulation is verified using an experimental method. Based on the hydraulic losses of each flow passage component, the energy characteristics of pump as turbine (PAT) are established, and the distribution pattern of total pressure fluctuation in the turbine is studied. The results show that the rotor–stator interaction between the impeller and the tongue makes the hydraulic performance and the internal flow field change periodically. The pressure fluctuation intensities at the tongue, blade inlet edge, and balance hole are large, and the total pressure fluctuation in the three areas is intense in space and time. The internal flow characteristics at typical blade positions show that the secondary flow phenomena such as separation flow and wake flow near the tongue make the pressure gradient larger, which is an important influence mode of the rotor–stator interaction. This study provides a reference and guidance for the unsteady study of low specific-speed PAT.

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“…In order to investigate the flow pattern of the fluid inside the deep well pump and optimize the hydraulic performance of the deep well pump, scholars have carried out a large number of numerical simulations and experiments on the deep well pump, and have achieved a lot of research results (El-Emam et al, 2022). Gölcü et al (Gölcü et al, 2006) analyzed the effect of splitter vanes on the performance of the deep well pump with different blade numbers, and continued to study the effect of splitter vane length on the performance of the deep well pump under the optimal scheme.…”

Section: Introductionmentioning

confidence: 99%

Investigation of high-speed deep well pump performance with different outlet setting angle of space diffuser

Cao¹,

Zhang²,

Cao³

et al. 2023

Front. Energy Res.

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As one of the important equipment for pumping groundwater, how to improve the operation performance of deep well pump has been a research hotspot. At present, most of the deep well pump hydraulic design research mainly focuses on the low speed condition, and there is still a lack of systematic research on the internal flow theory and design method of the high speed deep well pump. In this paper, numerical simulation is used to investigate the performance change law of high speed deep well pump under different space diffuser blade outlet setting angles, and the performance test of the design scheme model is used to verify the accuracy of numerical simulation. The hydraulic loss inside the space diffuser and the velocity moment at the outlet are quantitatively analyzed. The results shown that the outlet setting angle of 90° is a relatively optimal solution. Under the designed outlet setting angle, the hydraulic loss in the first-stage space diffuser decreases with the increase of the flow rate, and the average hydraulic loss in the space diffuser at all levels fluctuates between 16% and 20%. With the increase of the number of stages, the velocity moment at the outlet of the space diffuser also increases gradually, and the change trend of the velocity moment at the outlet of the first-stage space diffuser under different outlet setting angles is relatively consistent. This research can provide reference for the optimal design and application of high speed deep well pump.

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Computational Methods of Erosion Wear in Centrifugal Pump: A State-of-the-Art Review

Cited by 43 publications

References 147 publications

Influence of hydroabrasive wear of impeller blades on head of centrifugal pump

Influence of hydroabrasive wear of impeller blades on head of centrifugal pump

Numerical investigation of unsteady pressure pulsation characteristics in an ultra-low specific-speed centrifugal pump as a turbine

Investigation of high-speed deep well pump performance with different outlet setting angle of space diffuser

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