Unstable pressure fluctuations in the vaneless space of high-head reversible pump-turbines–a systematic review

BR Rode, A Kumar - Journal of Energy Storage, 2023 - Elsevier
In the high-head reversible pump-turbines, the most unfavourable hydraulic instability is the
unstable pressure fluctuations in the vaneless space caused by interactions between the …

Numerical simulation and experimental study on the comparison of the hydraulic characteristics of an axial-flow pump and a full tubular pump

L Shi, W Zhang, H Jiao, F Tang, L Wang, D Sun… - Renewable Energy, 2020 - Elsevier
An axial-flow pump impeller is designed on the basis of plane cascade theory, which is
based on surface element method, to study the influence of impeller rotor on the hydraulic …

Numerical simulation and experimental study of transient characteristics in an axial flow pump during start-up

S Fu, Y Zheng, K Kan, H Chen, X Han, X Liang, H Liu… - Renewable Energy, 2020 - Elsevier
In order to explore the impact load and instantaneous fluid pressure of transient flow on
pump station system under the nonregulative operating conditions, the transient …

Evaluation of gap influence on the dynamic response behavior of pump-turbine runner

L He, L Zhou, SH Ahn, Z Wang, Y Nakahara… - Engineering …, 2019 - emerald.com
Purpose The gaps between runner and nearby structures play an important role in the
dynamic response of runner, especially for pump-turbines. This paper aims to evaluate the …

Dynamic stress characteristics and fatigue life analysis of a slanted axial-flow pump

F Yang, D Jiang, W Hu, A Nasr… - Proceedings of the …, 2023 - journals.sagepub.com
The shaft of the slanted axial-flow pump device is inclined, so, the stress on the impeller is
complex, which leads to the prominent problem of structural reliability. In order to study the …

Comparative analysis of strength and modal characteristics of a full tubular pump and an axial flow pump impellers based on fluid-structure interaction

L Shi, J Zhu, L Wang, S Chu, F Tang, Y ** - Energies, 2021 - mdpi.com
Fluid-structure interaction (FSI) was used to determine the structural mechanical
characteristics of full tubular and axial-flow pumps. The results showed that as the flow rate …

Multiobjective optimization of a tubular pump to improve the applicable operating head and hydraulic performance

W Zhao, J Zhang, X Yu, D Zhou… - Proceedings of the …, 2021 - journals.sagepub.com
Tubular pumps are widely used in irrigation and water conveyance projects. However, the
operating head of most of these pumps is low, and only a few studies have focused on the …

Load rejection transient process simulation of a Kaplan turbine model by co-adjusting guide vanes and runner blades

H Chen, D Zhou, Y Zheng, S Jiang, A Yu, Y Guo - Energies, 2018 - mdpi.com
To obtain the flow mechanism of the transient characteristics of a Kaplan turbine, a three-
dimensional (3-D) unsteady, incompressible flow simulation during load rejection was …