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Author

Ruo-fu Xiao

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Conference Open access Sep 2026

Numerical analysis of flow structure and entropy production in a rotor-stator cavity under different leakage flow rates

Disk friction loss is remarkably significant in low specific speed centrifugal pumps, originating from the complex flow interference within the rotor-stator cavity. To reveal the hydrodynamic mechanism and energy dissipation characteristics of this loss, this study investigates the flow in the rotor-stator cavity under...

Ming-Kun Fang, Kento Sakai, Ran Tao et al. · 0 citations
Conference Open access Sep 2026

Research on the spatiotemporal evolution of pressure pulsations during part-load operation of pump-turbine under power generation conditions

Pressure pulsation of pump-turbines under part-load operation exhibits pronounced multi-scale and strongly coupled characteristics, which are closely related to the hydraulic stability and vibration safety of pumped storage units. In this study, the part-load operation of a pump-turbine under turbine-mode conditions is...

Yuan Tang, Ming-Kun Fang, Ran Tao et al. · 0 citations
Aug 2026

Assessment of the λ coefficient in an interface-effect eddy-viscosity correction for unsteady cavitating flow over a Delft Twist 11 hydrofoil

Unsteady cavitation affects the hydraulic performance and reliability of mechanical engineering components such as hydrofoils, pumps, and turbines. Its numerical prediction remains challenging because standard one-fluid RANS simulations may overpredict eddy viscosity in the vapor–liquid transition region and suppress...

Xu Han, Shi-Jie Zhang, Ran Tao et al. · 0 citations
Aug 2026

Experimental study and feature identification of cavitation-induced acoustic pressure signals in a large vaned-voluted centrifugal pump

Pumps are critical mechanical devices in water conservancy and agricultural systems, yet cavitation remains a major issue affecting their operational safety and efficiency. To investigate the acoustic pressure response characteristics under cavitating conditions in a large vaned-voluted centrifugal pump, a model-scal...

Tengjiao Guo, Shengjun Hu, Ran Tao et al. · 0 citations
Open access Jul 2026

Analysis of the Internal Flow Characteristics and Impeller Strength of the Stay Vane Mixed Flow Chemical Pump

To improve the energy conversion performance and long-term structural stability of stay vane mixed-flow chemical pumps used for industrial residual pressure recovery, this paper establishes a coupled numerical framework of computational fluid dynamics (CFD) and finite element structural analysis (FEA). The internal flo...

Jia-Hao Lu, Bai-Yang Xiao, Shao-Bin Li et al. · 0 citations

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