Multistage hybrid model for performance prediction of centrifugal pump

Deng, Hui‐Xiong; Xia, Zhaoshun; Sun, Zenan; Zheng, Shi-Yi; Liu, Yi

doi:10.1016/j.advengsoft.2022.103302

Cited by 7 publications

(3 citation statements)

References 24 publications

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“…Efficiency also goes on increasing as blade number increases. The efficiency of a centrifugal pump increases with increasing impeller blade number because more blades provide better flow control and reduce the amount of fluid slip between the blades [24]. As the number of blades goes on increasing, the fluid is directed more efficiently from suction to discharge, resulting in less turbulence and energy losses.…”

Section: Pressure Distribution For Two Stage Centrifugal Pumpmentioning

confidence: 99%

“…Following the changes, the streamline check considerably improved the volume and flow pattern in the inter-stage channel. This study significantly advances engineering knowledge by successfully enhancing the performance of a two-stage double-suction centrifugal pump unit.Deng et al[24] designed a multistage hybrid model that uses only the measured values for the speed and valve opening to determine the various performance indices of centrifugal pumps. They outlined two key defining characteristics.…”

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confidence: 99%

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Performance Enhancement and Numerical Simulation of Inter-Stage of Multistage Centrifugal Pump by varying number of blades Using CFD

Singh,

2023

Preprint

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Numerous impellers are placed in line on a same shaft in a multistage centrifugal pump, comprises impeller, diffuser and return channel. A return channel is employed to direct the flow to the following impeller. This article uses numerical simulation to demonstrate and explain the performance evaluation of a two-stage centrifugal pump. To carry out numerical flow simulation for multistage, stage analysis is performed for each stage. Domain for simulation was created using Creo Parametric software and ANSYS Fluent 2022R1 was used for simulation. The flow simulation is carried out by using the k-ε turbulence model. The flow analysis of first stage is carried out for a different number of blades, viz. 5, 6, and 7, for different speeds varying from 1450 rpm to 1900 rpm. It was observed that 7 blade number and 1900 rpm are optimum in range as it gives the best performance results i.e. H=49.34m & η= 54.65%. The optimal solutions from the first-stage were used to analyse the second-stage. The first stage's flow differs markedly from the following stages. It was observed that losses in diffuser of 1st stage and 2nd stage are almost same but head losses in return passage of 1st stage and 2nd stage are having difference of 19.99%, 28.5%, and 23.59% for 5, 6, and 7 blades respectively. The findings show that the multistage simulation could more accurately mirror the actual flow than the two-stage simulation, but that it also had more demanding computer configuration requirements. Two-stage simulation is a good option for estimating pump performance because it strikes a better balance between computation time and numerical precision. The findings of this research present as a foundation and reference point for future enhancements to multistage centrifugal pump performance.

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Section: Pressure Distribution For Two Stage Centrifugal Pumpmentioning

confidence: 99%

mentioning

confidence: 99%

Performance Enhancement and Numerical Simulation of Inter-Stage of Multistage Centrifugal Pump by varying number of blades Using CFD

Singh,

2023

Preprint

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show abstract

“…Deng et al [ 23 ] designed a multistage hybrid model that uses only the measured values for the speed and valve opening to determine the various performance indices of centrifugal pumps. They outlined two key defining characteristics.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of inter‐stage of multistage centrifugal pump by varying number of blades

Yadav,

Singh,

Kumarswamy

2024

Can J Chem Eng

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Numerous impellers are placed in line on the same shaft in a multistage centrifugal pump, comprising an impeller, diffuser, and return channel. The design of a two‐stage multistage centrifugal pump according to the specifications given in the literature was created using Creo Parametric software and validated by carrying out a numerical simulation of the first‐stage centrifugal pump by varying the number of blades and impeller speed and concluding that the pump with 7 blades and 1900 rpm rotation gives the best efficiency and head by comparing the obtained results to experimental ones. ANSYS Fluent 2022R1 was used for simulation. The optimal solutions from the first stage were used to analyze the second stage. It was observed that losses in the diffuser of the 1st stage and 2nd stage are almost the same, but head losses in the return passage of the 1st stage and 2nd stage have differences of 19.99%, 28.5%, and 23.59% for 5, 6, and 7 blades, respectively. The findings show that the multistage simulation could more accurately mirror the actual flow than the two‐stage simulation, but it also had more demanding computer configuration requirements. A two‐stage simulation is a good option for estimating pump performance because it balances computation time and numerical precision better.

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Exploring a new criterion to determine the onset of cavitation in centrifugal pumps from energy-saving standpoint; experimental and numerical investigation

Dehghan,

Shojaeefard,

Roshanaei

2024

Energy

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Multistage hybrid model for performance prediction of centrifugal pump

Cited by 7 publications

References 24 publications

Performance Enhancement and Numerical Simulation of Inter-Stage of Multistage Centrifugal Pump by varying number of blades Using CFD

Performance Enhancement and Numerical Simulation of Inter-Stage of Multistage Centrifugal Pump by varying number of blades Using CFD

Numerical simulation of inter‐stage of multistage centrifugal pump by varying number of blades

Exploring a new criterion to determine the onset of cavitation in centrifugal pumps from energy-saving standpoint; experimental and numerical investigation

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