Articles de revista: Recent submissions
Now showing items 1-12 of 500
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Innovative approaches to hydraulic turbine advanced condition monitoring
(Institute of Physics (IOP), 2024-11-01)
Article
Open AccessThis research paper introduces advancements in hydraulic turbine condition monitoring through the implementation of vibration-based condition indicators. Conventional methods rely on vibration monitoring systems, triggering ... -
Research on the applicability of hybrid RANS/LES models to predict the flow behavior in bulb tubular pump under rated and stall conditions
(John Wiley & sons, 2025-02-21)
Article
Open AccessThe investigation into the internal flow characteristics of the bulb tubular pump device has important practical significance for improving both optimal design and operation stability. This paper uses different RANS/LES ... -
Experimental identification of characteristic curves of supersonic vacuum ejector and empirical prediction of total evacuation time
(Multidisciplinary Digital Publishing Institute, 2025-02-01)
Article
Open AccessSupersonic vacuum generators, or ejectors, operate pneumatically to extract air from tanks in industrial applications. A key performance metric for ejectors is the Total Evacuation Time (TET), which measures the time ... -
Dynamic structural characteristics of rotor components during the start-up transition of the LFR main coolant pump
(2025-01-01)
Article
Open AccessThe delivery medium of the LFR main coolant pump (MCP) is lead-bismuth eutectic (LBE). During startup, the MCP's impeller encounters direct interaction forces with the high-density LBE, subjecting the rotor to substantial ... -
Numerical prediction of the fluid damping of a standing disc with a variable axial distance from a rigid wall
(Institute of Physics (IOP), 2024-11-01)
Article
Open AccessNear-resonant flow-induced vibrations are a significant cause of fatigue damage in hydraulic impellers. The amplitude of these vibrations is limited mainly by the fluid damping, making its quantification paramount for the ... -
Diagnosis of the unstable behaviour of a Kaplan turbine before synchronizing to the grid
(Institute of Physics (IOP), 2024-11-01)
Article
Open AccessThis work reports on a new Kaplan turbine that experienced an unstable behaviour during its start up. The unit experienced strong sound and vibration in that phase. To identify the origin of this unstable behaviour, a set ... -
City-scale assessment of pedestrian exposure to air pollution: A case study in Barcelona
(2024-11-01)
Article
Open AccessAir pollution is a pressing environmental risk to public health, particularly in cities where population density and pollution levels are high. Traditional methods for exposure analysis often rely on census data, but recent ... -
Accuracy and scalability of incompressible inductionless MHD codes applied to fusion technologies
(2024-10-01)
Article
Open AccessIt is well-known that magnetohydrodynamics (MHD) dominates the dynamic of the liquid metal flows inside the breeding blankets (BB) of future nuclear fusion plants by magnetic confinement. MHD is a multiphysics phenomenon ... -
Experimental study on the detection of vibrations of an operating turbine runner with sensors on the casing
(Elsevier, 2025-05-15)
Article
Open AccessHydraulic turbine runners experience strong vibrations in operation, especially when resonances between runner natural frequencies and hydraulic excitations occur. Precise determination of prototype runner frequencies in ... -
Computational fluid dynamics challenge on indoor dispersion of pathogen-laden aerosols
(2025-02-01)
Article
Open AccessThis paper presents and discusses the results of the “2024 International Computational Fluid Dynamics Challenge on the long-range indoor dispersion of pathogen-laden aerosols” aimed at assessing the ability of different ... -
Study on evolution characteristics of energy dissipation and vortex in pump-turbine during load rejection transition process
(2025-02-03)
Article
Restricted access - publisher's policyThe widespread adoption of intermittent wind and solar energy sources disrupts the stability of power grids, necessitating frequent load rejection processes for pump-turbine. This jeopardizes the stability of pump-turbine ... -
Research on the mechanism of the effect of vortex on the hydraulic loss of pump as turbine units based on entropy production theory
(2025-02-01)
Article
Restricted access - publisher's policyPump as turbine (PAT) is a common method of energy recovery, however, vortices are a negative phenom for these units. The objective of this research is to study the effect of vortex motion on the hydraulic loss of pump as ...
