Numerical investigation of hump characteristic improvement in a large vertical centrifugal pump with special emphasis on energy loss mechanism

G Yang, X Shen, L Shi, D Zhang, X Zhao… - Energy, 2023 - Elsevier
This study aims to numerically investigate the reasons for the hump characteristic
improvement of the large vertical centrifugal pump (LVCP) optimized model and thus …

Investigation of energy dissipation mechanism and the influence of vortical structures in a high-power double-suction centrifugal pump

Q Deng, J Pei, W Wang, J Sun - Physics of Fluids, 2023 - pubs.aip.org
The extensive applications of double-suction centrifugal pumps consume a considerable
amount of energy. It is urgent to reveal the detailed energy dissipation generation and find …

Mechanism of the rotor− stator interaction in a centrifugal pump with guided vanes based on dynamic mode decomposition

T Yu, Z Shuai, X Wang, J Jian, J He, C Meng… - Physics of …, 2022 - pubs.aip.org
In this paper, the mechanism of the rotor–stator interaction in a centrifugal pump with guide
vanes is studied numerically and theoretically. The dynamic mode decomposition method is …

Research on wake and potential flow effects of rotor–stator interaction in a centrifugal pump with guided vanes

T Yu, Z Shuai, X Wang, J Jian, J He, W Li, C Jiang - Physics of Fluids, 2023 - pubs.aip.org
In this paper, the wake and potential flow effects of the rotor–stator interaction in a centrifugal
pump with guide vanes are investigated from the view of the separation of turbulent and …

The vortex dynamics characteristics in a pump-turbine: A rigid vorticity analysis while varying guide vane openings in turbine mode

X Yan, K Kan, Y Zheng, Z Xu, M Rossi, L Xu, H Chen - Energy, 2024 - Elsevier
In off-design conditions, pump-turbines generate vortex structures of varying scales and
intensities, jeopardizing energy conversion due to unstable flow phenomena. While off …

Active Darcy's Law

RR Keogh, T Kozhukhov, K Thijssen, TN Shendruk - Physical Review Letters, 2024 - APS
While bacterial swarms can exhibit active turbulence in vacant spaces, they naturally inhabit
crowded environments. We numerically show that driving disorderly active fluids through …

Modulation effect on rotor-stator interaction subjected to fluctuating rotation speed in a centrifugal pump

S Ni, G Zhao, Y Chen, H Cao, C Jiang… - Engineering …, 2023 - Taylor & Francis
In the paper, the modulation effect of rotor-stator interaction subjected to fluctuating rotation
speed is investigated numerically. A quasi-bivariate variable mode decomposition method …

Effect of blade length on unsteady cavitation characteristics of hydrodynamic torque converter

J Zhang, H Wang, Q Yan, BC Khoo, C Liu, M Guo… - Energy, 2024 - Elsevier
Hydrodynamic torque converters (HTC), as power transmission component for high-power
machinery, achieve flexible and energy saving transmission by circulating viscous oil …

Quantitative analysis of energy loss and performance prediction of regenerative compressor

J Zhang, S Li, P Wu, H Ye, Z Qi, D Wu - Applied Thermal Engineering, 2024 - Elsevier
The intricate internal flow structure within the regenerative compressor leads to substantial
energy loss, presenting a long-standing challenge in accurately predicting its performance …

Impeller design and performance characteristics of a side channel pump

D Appiah, KA Adu-Poku, F Zhang, K Chen, S Yuan - AIP Advances, 2023 - pubs.aip.org
Flow non-uniformity inherent at the impeller passages is realized to have pronounced effects
in hydraulic pumps, which leads to severe operational challenges. Cutting the blade tip has …