Particle anti-accumulation design at impeller suction of deep-sea mining pump and evaluation by CFD-DEM simulation

Deng, Liwei; Lü, Haining; Liu, Shaojun; Hu, Qiong; Yang, Jianmin; Kang, Yajuan; Sun, Peng

doi:10.1016/j.oceaneng.2023.114598

Cited by 17 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results showed that, with the increase in impeller blade angle, the head, efficiency, and average wear rate all first increased, and then decreased. Deng et al [29] evaluated the improvement of particle transport characteristics and hydraulic performance of deep-sea mining pumps through CFD-DEM simulation. They restricted and modified most of the pre-swirling flow and solved the problem of particle accumulation in the impeller suction area.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Hydraulic Efficiency and Internal Flow Characteristics of a Multi-Stage Pump Using RBF Neural Network

Zhang,

Wang,

Yang

et al. 2024

Water

View full text Add to dashboard Cite

In order to improve the hydraulic efficiency and internal flow pattern of a multi-stage pump under multiple flow conditions, an intelligent optimization design was proposed for its hydraulic components. Sensitivity analysis was used to select the key parameters influencing the hydraulic efficiency of a multi-stage pump. The optimal Latin hypercube sampling and non-dominated sorting genetic algorithm Ⅱ were employed to build a multi-objective optimization system. Moreover, a radial basis function neural network was adopted as the surrogate model of hydraulic efficiency. The research results showed that the impeller outlet width, impeller blade wrap angle, impeller outlet blade angle, and diffuser inlet width were the key factors affecting the hydraulic efficiency. The efficiency of the optimized model increased by 4.35% under the design condition and the matching of the internal flow between the optimized impeller and diffuser was significantly enhanced under the nominal condition. The improved flow pattern could be clearly observed in the flow passage of both the pump impeller and the diffuser. After optimization, the wear performance of the model was also improved compared to the original design. The wear area decreased in size and was distributed more evenly, resulting in a noticeable decrease in the maximum amount of wear.

show abstract

Section: Introductionmentioning

confidence: 99%