Dynamic Characteristic Analysis of Centrifugal Pump Impeller Based on Fluid-Solid Coupling

Li, Yufang; Su, Hongli; Wang, Yanwei; Jiang, Wei; Zhu, Qipei

doi:10.3390/jmse10070880

Cited by 10 publications

(5 citation statements)

References 27 publications

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“…This study adopts one-way transient FSI for structural analysis of the rotor system. The coupled three-dimensional equations of the flow field and impeller structure can be obtained [36]:…”

Section: Calculation Methodsmentioning

confidence: 99%

Structural Analysis and Optimization of Ultra-High-Speed Centrifugal Pump Rotor System Considering Fluid–Structure Interaction

Yan,

Ye,

Wang

et al. 2024

Water

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An ultra-high-speed centrifugal pump plays a crucial role as part of an aircraft engine’s fuel supply system. This paper focuses on the coupled vibration and optimization of a parallel double-stage ultra-high-speed centrifugal pump considering fluid–structure interaction (FSI). The accuracy of the numerical calculation is verified and compared with the experimental results. The steady and transient characteristics of the rotor system are analyzed to ensure the operational reliability of the rotor system. Moreover, an orthogonal test is conducted to explore the transient structural characteristics of the rotor system. The existing cross-support structure meets high-speed stability requirements and there is no resonance in the cantilevered rotor system. The maximum and minimum errors for the head of Pump 2 are 4% and 0.7%, respectively. The minimum values for maximum average deformation and maximum average stress are less than 0.31 mm and 245 MPa, respectively, at design conditions. The position of Bearing 1 near the multi-stage impeller has the greatest impact on the deformation and stress of the rotor system, and the deformation and stress increase as the distance increases. The results of this study can provide a valuable reference for the design of ultra-high-speed centrifugal pump rotor systems.

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“…This study adopts one-way transient FSI for structural analysis of the rotor system. The coupled three-dimensional equations of the flow field and impeller structure can be obtained [36]:…”

Section: Calculation Methodsmentioning

confidence: 99%

Structural Analysis and Optimization of Ultra-High-Speed Centrifugal Pump Rotor System Considering Fluid–Structure Interaction

Yan,

Ye,

Wang

et al. 2024

Water

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“…In general, almost all literature covers classical methods of calculation and design of centrifugal pumps for pumping Newtonian, non-Newtonian liquids and even gas-liquid mixtures [14][15][16][17][18][19].…”

Section: Using Modern Mechanical Design Methods For Determining the M...mentioning

confidence: 99%

“…The complex flow characteristics of the vertical single-stage marine centrifugal pumps have been studied in this work, and the relationship between the energy distribution characteristics of the internal flow structure and hydraulic performance has been explored under different operating conditions. Y. Li et al [18] in paper is studying the internal fluid flow and its influence on the dynamic characteristics of the pump impeller and to explore the causes of vibration during the transient start-up process. The geometry of the flow channel inside the centrifugal pump is established using Creo 4.0 software (American PTC company).…”

Section: Using Modern Mechanical Design Methods For Determining the M...mentioning

confidence: 99%

Using Modern Mechanical Design Methods for Determining the Main Characteristics of a Cryogenic Centrifugal Pump

2023

IJOMAM

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The paper is devoted to the study of the flow structure of liquid nitrogen in centrifugal pumps and determination of the energy and kinematic characteristics of the flow in the impeller of the support cryogenic pump of the mobile nitrogen units. An analysis of modern technical solutions in this field was made identifying their advantages and disadvantages. The work examines the processes and specifics of the flow of liquid nitrogen in the impeller flow part. Integral characteristics, such as differential pressure (head) and hydraulic efficiency, of the impeller during pumping liquid nitrogen and water were obtained using modern modelling tools. An increase in hydraulic losses in the impeller during pumping of liquid nitrogen in the area containing curved channels and rotation was detected. This contradicts the tendency of loss reduction in a fixed pipe, where differential pressure is much smaller than during pumping water. A study of different configurations of booster pumps was made. According to mechanical approaches to the hydraulic equipment design, it was justified that reduced number of impeller blades (4 blades) ensures the operation of the unit in a required efficiency range. As a result of spatial modelling of the flow using the free open source CFD software OpenFOAM, distributions of the main kinematic characteristics of the flow were obtained. It was found that the physical properties of liquid nitrogen do not have a significant effect on the main parameters of centrifugal pumps, such as efficiency and pressure (the hydraulic efficiency during pumping of liquid nitrogen is only 2-5% lower than during pumping water).

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“…The whole flow passage of a Francis pump used in the South-to-North Water Transfer Project was evaluated under pump and reverse power generation conditions. The whole flow passage included the intake passage, runner, guide vane and outlet passage [33]. The flow direction of the pump has an included angle with the axis.…”

Section: Modeling and Meshingmentioning

confidence: 99%

Fatigue Life Study of Francis Pump under Reverse Generation Condition Based on Fluid Solid Coupling

Chen

Zheng

et al. 2020

Water

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In non-design conditions, severe hydraulic instability can affect the stability of a pump station and even shorten its service life. A Francis pump station in the South-to-North Water Transfer Project was examined to carry out a numerical simulation of the entire flow passage using a bidirectional fluid–solid method for static and fatigue life. Due to the inlet setting, reverse power generation exhibited a more distorted flow pattern that resulted in higher energy loss than the pump condition. The radial force acting on the blades in reverse power generation was 39.1% higher. Runner stress was mainly concentrated at the leading edge and blade edge. The maximum stress in reverse power generation was 35.7 MPa, which was about 28.5% higher than in the pump condition. While the maximum deformation was 0.035 mm, almost 94.4% more severe than in the pump condition, mainly concentrated at the leading edge. Based on the fatigue analysis, a minimum safety factor obtained numerically was 8.238 in the pump condition and 6.343 in the reverse power condition, respectively. The safety factors satisfy the safety standard of the runner material and meet requirements of safety and stability in the reverse power generation condition.

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Dynamic Characteristic Analysis of Centrifugal Pump Impeller Based on Fluid-Solid Coupling

Cited by 10 publications

References 27 publications

Structural Analysis and Optimization of Ultra-High-Speed Centrifugal Pump Rotor System Considering Fluid–Structure Interaction

Structural Analysis and Optimization of Ultra-High-Speed Centrifugal Pump Rotor System Considering Fluid–Structure Interaction

Using Modern Mechanical Design Methods for Determining the Main Characteristics of a Cryogenic Centrifugal Pump

Fatigue Life Study of Francis Pump under Reverse Generation Condition Based on Fluid Solid Coupling

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