A5000365107- Hydrology and Sediment Transport Processes
- Hydraulic flow and structures
- Hydrology and Watershed Management Studies
- Water Systems and Optimization
- Water-Energy-Food Nexus Studies
- Flood Risk Assessment and Management
- Cavitation Phenomena in Pumps
- Integrated Energy Systems Optimization
- Geotechnical Engineering and Underground Structures
- Soil erosion and sediment transport
- Dam Engineering and Safety
- Smart Grid Energy Management
- Cryospheric studies and observations
- Fluid Dynamics Simulations and Interactions
- Electric Power System Optimization
- Physics and Engineering Research Articles
- Reservoir Engineering and Simulation Methods
- Water resources management and optimization
- Aquatic and Environmental Studies
- Hydraulic and Pneumatic Systems
- Fluid Dynamics and Turbulent Flows
- Fatigue and fracture mechanics
- Climate change and permafrost
- Urban Stormwater Management Solutions
- Engineering Structural Analysis Methods
Fundación Renal
2024
École Polytechnique Fédérale de Lausanne
2006-2022
Instituto Politécnico de Lisboa
2006-2016
Instituto Superior Técnico
2016
Water supply systems (WWSs) are one of the main manmade water infrastructures presenting potential for micro-hydropower. Within urban networks, local decentralized micro-hydropower plants (MHPs) may be inserted in regional electricity grid or used self-consumption at level. Nevertheless, such networks complex and quantification other than that achieved by replacing pressure reducing valves (PRVs) is difficult. In this work, a methodology to quantify hydropower based on excess energy network...
Small-scale hydropower is emerging as a decentralized source to satisfy local demand for electricity. In water supply systems, microhydropower can be used energy recovery associated with excessive pressure control. However, there lack of specific solutions applications within networks where discharges are highly variable and limitations pressure. An arrangement microturbines specially conceived proposed, based on recently tested microturbine inline installation in pipes. The up four turbine...
The geometrical development of unlined plunge pools downstream large dams depends on both local geology and type plunging jet its diffusion pattern. Experimental investigations in with different lateral confinements are presented. They show that the pool geometry influences diffusion, air entrainment pool, and, as a consequence, impact pressures at water-rock interface inside fissured rock mass. Results include definition for variable depths, velocities, geometries, depending explicitly...
Abstract Background Frailty among older adults undergoing hemodialysis is increasingly prevalent, significantly impacting cognitive function, mobility, and social engagement. This study focuses on the clinical profiles of very in hemodialysis, particularly examining interplay dependency frailty, their influence dialysis regimens. Methods In this observational, descriptive study, 107 patients aged over 75 from four outpatient centers one hospital unit were examined a year. Patient data...
This paper presents a comprehensive methodology to model and determine the annual sediment balance of complex system interconnected reservoirs, based on detailed interpretation multi-decadal data series reservoir management modelling fluxes. is applied reservoirs Oberaar, Grimsel, Räterichsboden, Trift, which are located in Swiss Alps. Additionally, effects climate warming yield investigated. Modelling results show that at present, hydropower cascade formed by Räterichsboden retains about...
The paper presents the analysis of fluid–structure interaction occurring during hydraulic transients in pipe coils by means a four-equation model. purpose is to understand and describe effect coil movement on transient wave. model couples flow with axial pipe-wall neglecting radial inertia, flexure torsion piping system. Three models have been developed: first simplifying straight moving valve, second assuming independent deformation each ring, third that includes dry friction dissipation....
Note: [426] Reference LCH-ARTICLE-2008-022doi:10.1061/(ASCE)0733-9429(2004)130:11(1128) Record created on 2008-02-22, modified 2016-08-08
Due to the increasing integration of new renewable energies, electrical grid undergoes more frequent instabilities. Hydroelectric power plants, particularly pumped storage are well suited for control. However, this objective requires extending operating range machines and number start-up, stand-by shut-down procedures, which reduces lifespan due high mechanical stresses. The current study focuses on a pumped-storage plant equipped with ternary groups. Recently, cracks runner blades Francis...
Abstract In the framework of new Swiss feed-in-tariff system for Small Hydropower Plants (SHP), aim SmallFLEX project, led by HES-SO Valais and performed in collaboration with EPFL, WSL, EAWAG, PVE FMV, is to show how SHP can provide winter peak energy ancillary services, whilst remaining eco-compatible. The pilot demonstrator site selected Gletsch-Oberwald (KWGO) owned FMV commissioned end 2017. This run-of-river power plant equipped two six-jets Pelton turbine units featuring a maximum 7.5...
Note: [653] Reference LCH-ARTICLE-2009-010doi:10.1139/L08-143View record in Web of Science Record created on 2009-06-26, modified 2016-08-08
Spillways are a requirement for dams’ safety, mainly preventing overtopping during floods. A common spillway solution involves plunging jets, which dissipate considerable flow energy in the plunge pool. Energy dissipation has to occur controlled manner avoid endangering dam foundation and river slopes. Indeed, scouring process downstream riverbed will inevitably develop until equilibrium is reached, otherwise suitable pre-excavated or concrete lined pool be provided. This paper focuses on...