Investigation of Internal Flow in Centrifugal Pump Diffuser using Laser Doppler Velocimetry (LDV) and Computational Fluid Dynamics

Sugiyama, Daisuke; Ichinose, Asuma; Takeda, Tomoki; Miyagawa, Kazuyoshi; Negishi, Hideyo; Tsunoda, Atsuhiro

doi:10.1088/1742-6596/1909/1/012075

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…Pedersen N et al [18] used PIV and LDV to measure the flow channels in the centrifugal impeller rotating region in detail, and the comparison of the mean field results obtained by PIV and LDV tests showed good consistency. Daisuke S et al [19] studied a high-head pump with an unshrouded impeller. LDV was used to measure the velocity distribution at the inlet and outlet plane of the diffuser and to capture the flow from the unshrouded impeller.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on PIV Measurement and CFD Investigation of the Internal Flow Characteristics in a Reactor Coolant Pump

Lu²,

Huang

et al. 2023

Energies

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The nuclear reactor coolant pump (RCP) is the core piece of equipment of a nuclear power plant (NPP). The energy performance and internal flow characteristics of RCPs are revealed by effective measurement methods, which are helpful to understand the flow mechanism of RCPs. The present work is intended to conduct an integrated study based on the energy performance test and Particle Image Velocimetry (PIV) flow-field non-contact measurement of the RCP. In addition, the prediction results of different turbulence models are compared with experimental results in detail. Through energy performance measurement and numerical calculation analysis, it can be found that various turbulence models have the ability to predict the performance of RCPs in engineering applications. At 0.8~1.2 Φd operating conditions, the maximum error is less than 10% and the minimum error is less than 0.1% by analyzing the energy performance of numerical calculations and experimental results. The PIV results show that the velocity of the discharge nozzle varies greatly from right (outlet of diffuser channel 2) to left (outlet of diffuser channel 12) due to different flow structures. Through the qualitative and quantitative comparison of the internal flow field, it can be concluded that, except for the low flow rate, compared with other computational models, the Realizable k-ε model can better predict the internal flow field of an RCP. The reasons for the experimental error and numerical calculation error are analyzed in detail, and the results can provide a reference for forecasting an RCP internal flow field with a special and complex structure.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on PIV Measurement and CFD Investigation of the Internal Flow Characteristics in a Reactor Coolant Pump

Lu²,

Huang

et al. 2023

Energies

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Performance Prediction of an Optimized Centrifugal Pump with High Efficiency

Wang¹,

Zhou²,

Han³

et al. 2023

Fluid Dynamics &Amp; Materials Processing

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Study on the Behavior of Cement Slurry Prepared by Vibration Agitation and Numerical Simulation of Flow Field

Kou,

Tan,

Cui

2024

Buildings

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Vibration agitation, a mechanically enhanced material mixing technique, is appropriate for preparing concrete- and other cement-based materials as it helps to eliminate the agglomeration effect between particles, improving mixing efficiency and material properties and saving resources. Applying vibration agitation to the large-scale industry is challenging primarily due to the difficulty in elucidating the microscopic mixing mechanism. To this end, the Euler multiphase flow model and ALE dynamic grid technology were combined to create the flow field simulation model of the cement slurry vibration mixing process in this paper. The physical parameters and mixing characteristics of various structure agitators under various vibration mixing frequencies were investigated as well. The findings demonstrated that vibration agitation significantly improved the mixing effect and the mixing efficiency and homogeneity were positively correlated with the excitation frequency. The slurry had a larger average velocity and turbulent kinetic energy, along with a reduced frictional viscous moment on the agitator. The vibration altered the system’s pressure field and fluid movement direction. Furthermore, the improvement of the flow field parameters for the horizontal shaft mixer was highly sensitive in the low-frequency range, whereas for vertical shaft agitators, it was at higher excitation frequencies that more significant gains were achieved.

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Investigation of Internal Flow in Centrifugal Pump Diffuser using Laser Doppler Velocimetry (LDV) and Computational Fluid Dynamics

Cited by 3 publications

References 2 publications

Experimental Study on PIV Measurement and CFD Investigation of the Internal Flow Characteristics in a Reactor Coolant Pump

Experimental Study on PIV Measurement and CFD Investigation of the Internal Flow Characteristics in a Reactor Coolant Pump

Performance Prediction of an Optimized Centrifugal Pump with High Efficiency

Study on the Behavior of Cement Slurry Prepared by Vibration Agitation and Numerical Simulation of Flow Field

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