Comparative Analysis of Strength and Modal Characteristics of a Full Tubular Pump and an Axial Flow Pump Impellers Based on Fluid-Structure Interaction

Shi, Lijian; Zhu, Jie; Wang, Li; Chu, Shiji; Tang, Fangping; Jin, Yan

doi:10.3390/en14196395

Cited by 16 publications

(7 citation statements)

References 26 publications

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“…Structural mode mostly refers to the mode in vacuum without considering the influence of a surrounding fluid. This mode is called "dry mode" [23]. There is fluid in the tubing, and some tubings are even placed in the fluid, so that their inner and outer walls are surrounded by the fluid.…”

Section: Vibration Mechanics Model Of Tubingmentioning

confidence: 99%

Modal Analysis of Tubing Considering the Effect of Fluid–Structure Interaction

Duan

Jin

2022

Energies

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When tubing is in a high-temperature and high-pressure environment, it will be affected by the impact of non-constant fluid and other dynamic loads, which will easily cause the tubing to vibrate or even resonate, affecting the integrity of the wellbore and safe production. In the structural modal analysis of the tubing, the coupling effect of the fluid and the tubing needs to be considered at the same time. In this paper, a single tubing is taken as an example to simulate and analyze the modal changes of the tubing under dry mode and wet mode respectively, and the effects of fluid solid coupling effect, inlet pressure, and ambient temperature on the modal of the tubing are discussed. After considering the fluid–structure interaction effect, the natural frequency of tubing decreases, but the displacement is slightly larger. The greater the pressure in the tubing, the greater the equivalent stress on the tubing body, so the natural frequency is lower. Furthermore, after considering the fluid–solid coupling effect, the pressure in the tubing is the true pulsating pressure of the fluid. The prestress applied to the tubing wall changes with time, and the pressures at different parts are different. At this time, the tubing is changed at different frequencies. Vibration is prone to occur, that is, the natural frequency is smaller than the dry mode. The higher the temperature, the lower the rigidity of the tubing and the faster the strength attenuation, so the natural frequency is lower, and tubing is more prone to vibration. Both the stress intensity and the elastic strain increase with the increase of temperature, so the displacement of the tubing also increases.

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Section: Vibration Mechanics Model Of Tubingmentioning

confidence: 99%

Modal Analysis of Tubing Considering the Effect of Fluid–Structure Interaction

Duan

Jin

2022

Energies

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“…Concurrently, the temporal evolution of stress manifests a discernible periodic pattern. Simultaneously, scholars have undertaken investigations into the structural attributes of various pump devices, including the bidirectional flow channel axial flow pump device [14], the S-type front axle extended tube pump device [15], and full tube axial flow pump units [16]. Scholars have elucidated the stress and strain distribution in the pump device utilizing fluid-structure coupling methods, providing insights into potential crack locations.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Pressure Pulsation and Structural Characteristics of Vertical Shaft Cross-Flow Pumps

Zhu,

Jiao,

Wang

et al. 2024

Water

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In order to study the pressure pulsation characteristics and structural dynamic response characteristics of a vertical shaft cross-flow pump, this study used a computational fluid dynamics (CFD) numerical simulation method to analyze the pressure pulsation characteristics of the inlet passage, impeller, and guide vane positions of the vertical shaft cross-flow pump device. At the same time, this study analyzed the equivalent stress–strain characteristics of the impeller and guide vane of a vertical shaft cross-flow pump based on fluid structure coupling technology and comprehensively analyzed the deformation modes of the impeller blades and guide vanes under dynamic water flow. This research shows that due to the influence of rotor–stator interaction, the amplitude of pressure pulsation at the interface between the impeller and guide vane of the pump device is the largest and that the main frequency distribution at this position is relatively complex. The non-uniformity of stress distribution at the impeller position gradually decreases with an increase in the radial distance. The high stress and strain zones of the impeller and guide vane are concentrated at the root of the blade. This study can provide reference for hydraulic optimization design and stable operation of similar pump devices.

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“…Additionally, Shen Jiawei [15] conducted static and modal analyses of the pump impeller under different operating conditions using Workbench. Shi Lijian [16] studied the structural mechanical properties of full-tubular flow and axial flow pumps using fluidstructure coupling and derived the corresponding stress and strain laws. Finally, Pei Ji [17] performed a two-way coupling analysis of the impeller of a single-vane centrifugal pump and derived the stress distribution at the different positions of the vane under different flow rates.…”

Section: Introductionmentioning

confidence: 99%

Study on the pulsation and fluid-structure coupling characteristics of rotating parts of vane type mixed-flow pump

Jin,

Xue,

Tang

2024

J. Phys.: Conf. Ser.

Self Cite

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Vane type mixed flow pumps (VTMFP) are widely used in water conservancy engineering, with a wide range of head applications. The impeller is the core component of the pump unit, and its internal flow and hydraulic excitation force affect the safe and stable operation of the unit. Aiming the pulsation characteristics inside the impeller, the VTMFP under different conditions is studied to examine the deformation and stress distribution by CFD, and the simulated results agree with the test data. The simulated results indicate that the impeller blade passing frequency consistently dominates the impeller inlet under various operating conditions. Furthermore, it is observed that the impeller rotating parts experience the highest levels of stress and deformation at low flow rate. The distribution of the equivalent force decreases from the hub to the shroud, while the deformation displacement decreases from the impeller shroud to the hub. In light of these findings, it is recommended that the design process takes into consideration the stress concentration near the blade root and the deformation at the blade edge.

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Comparative Analysis of Strength and Modal Characteristics of a Full Tubular Pump and an Axial Flow Pump Impellers Based on Fluid-Structure Interaction

Cited by 16 publications

References 26 publications

Modal Analysis of Tubing Considering the Effect of Fluid–Structure Interaction

Modal Analysis of Tubing Considering the Effect of Fluid–Structure Interaction

Analysis of Pressure Pulsation and Structural Characteristics of Vertical Shaft Cross-Flow Pumps

Study on the pulsation and fluid-structure coupling characteristics of rotating parts of vane type mixed-flow pump

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