Browsing by Author "Luo, Yongyao"
Now showing items 1-11 of 11
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A review of pzt patches applications in submerged systems
(Multidisciplinary Digital Publishing Institute (MDPI), 2018-07-12)
Article
Open AccessSubmerged systems are found in many engineering, biological, and medicinal applications. For such systems, due to the particular environmental conditions and working medium, the research on the mechanical and structural ... -
Cavitation effects on the structural resonance of hydraulic turbines: Failure analysis in a real francis turbine runner
(2018-09-03)
Article
Open AccessWhen discussing potential resonances in hydraulic turbine runners, cavitation effects are usually neglected. Nevertheless, recent studies have experimentally proved, that large cavitation volumes in the proximity of flexible ... -
Crack growth analysis and fatigue life estimation in the piston rod of a Kaplan hydro turbine
(2018-11)
Article
Open AccessLinear elastic fracture mechanics (LEFM) approaches are seldom used to analyze fatigue problems in hydraulic turbomachinery, where extremely simplified fatigue models are normally considered. In one of the largest Kaplan ... -
Detection of erosive cavitation on hydraulic turbines through demodulation analysis
(Institute of Physics (IOP), 2018)
Conference report
Open AccessErosive cavitation in hydraulic turbines affects severely the runner structure, increasing maintenance costs and reducing the remaining useful life of the component. Actual vibro-acoustic techniques used to detect this ... -
Fatigue life estimation of Francis turbines based on experimental strain measurements: Review of the actual data and future trends
(2019-03)
Article
Open AccessDue to the massive entrance of new renewable energies such as wind or solar, hydraulic turbines have to work far from its designed point and withstanding multiple transients, such as starts and stops, that shorten the ... -
Numerical analysis of the influence of design parameters on the efficiency of an OWC axial impulse turbine for wave energy conversion
(2019-03-12)
Article
Open AccessOscillating water column (OWC) axial impulse turbines permit the conversion of wave energy into electrical power. Unlike other hydropower units with a mature and well established technology, such turbines have been recently ... -
Numerical analysis on the modal characteristics of a pumped storage unit runner in cavitating flow
(Elsevier, 2022-12-01)
Article
Restricted access - publisher's policyCavitation is an important issue in pumped storage unit as it can compromise the safe and stable operation of the unit. The present work aims revealing the dynamic behavior of a pump-turbine runner in cavitating flow from ... -
Numerical simulation of added mass effects on a hydrofoil in cavitating flow using acoustic FSI
(2016-11-14)
Article
Restricted access - publisher's policyA fluid-structure interaction system has been solved using the coupled acoustic structural finite element method to simplify the cavitating flow conditions around a hydrofoil. The modes of vibration and the added mass ... -
Numerical theory and method on the modal behavior of a pump-turbine rotor system considering gyro-effect and added mass effect
(Elsevier, 2024-04-30)
Article
Restricted access - publisher's policyThe pump-turbine unit is the core equipment of pumped storage power station, and the rotor system is the key component of the pump-turbine unit. In this paper, the numerical method considering the gyro-effect and added ... -
Operating conditions leading to crack propagation in turbine blades of tidal barrages. Influence of head and operating mode
(Elsevier, 2020-01)
Article
Open AccessTidal energy systems and specifically tidal barrages are renewable energy systems, that use the potential energy of tides to produce electricity. Actually, there are few tidal power stations operating, although recent ... -
Visualization research of energy dissipation in a pump turbine unit during turbine mode's starting up
(Elsevier, 2023-11-01)
Article
Restricted access - confidentiality agreementIdentifying the precise location of flow energy dissipation (FED) in pump turbines is crucial for enhancing the stability of pumped storage power stations. In this study, the transient process of the turbine mode's starting ...
