Article
Engineering, Multidisciplinary
Shijie Yang, Puxi Li, Ran Tao, Fangfang Zhang, Ruofu Xiao, Weichao Liu, Fujun Wang
Summary: Large centrifugal pumps can generate electricity in reverse, reducing the power supply pressure of the power grid. However, the occurrence of the S region during operation and regulation can cause instability and undesirable effects. Understanding the characteristics of the S region is crucial for improving unit stability and efficiency.
ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS
(2023)
Article
Multidisciplinary Sciences
Renfei Kuang, Xiaoping Chen, Zhiming Zhang, Zuchao Zhu, Yu Li
Summary: This study presents a large eddy simulation of the flow characteristics of a centrifugal pump impeller under transient conditions. It is found that in the stall passages, the phase and amplitude of low-frequency pressure fluctuations are stronger and lag behind more than in the non-stall passages, while the strongest region of high-frequency pressure fluctuations appears in the stall passages during the transient rising stage.
Article
Engineering, Marine
Xiaobo Gong, Ji Pei, Wenjie Wang, Majeed Koranteng Osman, Wei Jiang, Jiantao Zhao, Qifan Deng
Summary: The study focuses on improving the efficiency of a three-stage reverse osmosis desalination high-pressure pump by optimizing the matching relationship between the impeller and the guide vane using an improved bat algorithm. Through this process, a 3.98% increase in design point efficiency was achieved, providing a reference for optimization design in multistage pumps.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Gaoyang Li, Xuhui Ding, Yubin Wu, Sirui Wang, Dong Li, Wenjin Yu, Xuezheng Wang, Yonghong Zhu, Yuting Guo
Summary: In this study, the behavior of liquid-vapor two-phase flow in centrifugal pumps under different conditions and impeller structural parameters was investigated using numerical and experimental methods. A cavitation multiphase unsteady model was proposed to simulate the flow field in the centrifugal pump, and an experimental platform was used to validate the simulation data. The study provides insights into structural optimization design of centrifugal pumps with good cavitation resistance.
Article
Engineering, Electrical & Electronic
Khaled Alawadhi, Bashar Alzuwayer, Tareq Ali Mohammad, Mohammad H. Buhemdi
Summary: In this study, a centrifugal pump was designed and optimized for the transportation of slurry. Multiple algorithms and methods were employed, with various geometric parameters used for optimization, resulting in conclusions on the performance impact of the pump.
Article
Environmental Sciences
Jianxin Hu, Ke Li, Wenfeng Su, Xinyi Zhao
Summary: This paper numerically simulates the flow of power-law fluid in a centrifugal pump. It reveals that the pump used for drilling fluid has a lower head and efficiency but a higher shaft power compared to the water pump. The flow patterns of both pumps are investigated, and the non-Newtonian effect on flow irregularity and energy consumption is analyzed. These findings can provide references for improving the design of centrifugal pumps using non-Newtonian fluids.
Article
Engineering, Chemical
Jun Wang, Lun Sun, Yilong Zhou, Yaohui Liu, Fujian Zhao
Summary: We enhanced the Zwart-Gerber-Belamri (ZGB) cavitation and RNG turbulence models to accurately simulate the cavitation characteristics of centrifugal pumps. The modified models considered the rotational motion characteristics and small fluctuations in rotational speed caused by hydraulic excitation force. The results showed that the improved model better predicted the cavitation performance and the area covered by cavities was 1/4 of the suction side of the vane when the cavitation degree increased.
Article
Engineering, Marine
Hu Qixiang, Yang Yang, Shi Weidong, Cao Weidong, Shi Yansheng
Summary: The study found that under overload conditions of a centrifugal pump, vapor is likely to first emerge from the tongue of the volute rather than at the leading edge of the blades, resulting in different flow distribution in each passage. The minimum flow rate appears in the upstream channel, and cavitation at the tongue compresses the flow area, causing a significant increase in flow rate at the impeller outlet.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Thermodynamics
Huiming Zou, Tianyang Yang, Mingsheng Tang, Changqing Tian, Dariusz Butrymowicz
Summary: This paper proposes a transcritical CO2 refrigeration cycle with dual ejectors in parallel (DEP) for electric vehicle heat pump system and an optimization method for the ejector based on genetic algorithm. The result shows that the DEP system outperforms the CON and SEJ systems in terms of coefficient of performance (COP) under different operating conditions.
Article
Thermodynamics
TianXin Wu, DengHao Wu, ShuYu Gao, Yu Song, Yun Ren, JieGang Mou
Summary: A multi-objective optimization method combining experimental design, surrogate model, and optimization algorithm is proposed to redesign impellers and diffusers for improving pump performance. The optimization results show that head and efficiency at the designed point 1.0Q(d) increased by 8.8% and 2.8% respectively, and C-MEI decreased by 1.34%. The energy loss and flow characteristics of the original and optimization models were analyzed, and the influencing mechanism of the pump geometrical parameters on the hydraulic performance and flow characteristics were discussed.
Article
Engineering, Multidisciplinary
Alessia Fracassi, Remo De Donno, Antonio Ghidoni, Pietro Marco Congedo
Summary: In this study, advanced optimization techniques are applied to optimize the blades of an ERCOFTAC-like pump, and the robustness of the optimal profiles under uncertainty is evaluated through uncertainty quantification. The findings are important for understanding and optimizing the performance of centrifugal pumps under uncertain conditions.
ENGINEERING OPTIMIZATION
(2022)
Article
Physiology
Peng Wu, Jiadong Huo, Weifeng Dai, Wei-Tao Wu, Chengke Yin, Shu Li
Summary: This study optimized the hydraulic and hemolytic performance of an inhouse centrifugal maglev blood pump with a secondary flow path by varying major design variables to reduce turbulence and secondary flow intensity. By changing blade angles, blade thickness, and position of splitter blades from a baseline design, turbulent intensities were reduced and the pump model's hydraulic and hemolytic performance significantly improved. Computational fluid dynamics (CFD) combined with hemolysis models were used for evaluation, with a hydraulic test conducted to validate CFD results on hydraulic performance.
FRONTIERS IN PHYSIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Remo De Donno, Alessia Fracassi, Antonio Ghidoni, Alessandro Morelli, Gianmaria Noventa
Summary: This paper investigates the capabilities of a surrogate-based optimization technique for advanced design of centrifugal pumps, focusing on a pump designed for automotive cooling systems. The study includes a three-dimensional geometry parametrization method based on Bezier surfaces and utilizes software packages such as Scilab, Ansys-CFX, and DAKOTA for geometric parametrization, CFD simulations, and optimization management. The research considers an operative point typical of high-performance gasoline cars.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Chemical
Yuqin Wang, Haodong Zhang, Zhibo Han, Xiaoqiang Ni
Summary: This paper established a mathematical model of the centrifugal pump flow control system and optimized it using a self-tuning PID control method based on adaptive control theory. Simulation results showed improvement in adjustment time and overshoot reduction. Testing validated the accuracy and real-time performance of the method, demonstrating that adaptive control can enhance system stability and robustness by dynamically adjusting parameters.
Review
Energy & Fuels
Wei Zhang, Lili An, Xiaojun Li, Feng Chen, Lidong Sun, Xunming Wang, Jie Cai
Summary: Centrifugal pumps are widely used in various fields, but the main issues lie in the adjustment mode, energy loss, and operation stability. This paper proposes an intelligent optimization algorithm based on centrifugal pump regulation and energy loss analysis to reduce energy consumption and find the most suitable adjustment method.
