Publications de Pedro Filipe De Almeida Manso

Effects of flow guide walls on sediment flushing in peaking hydropower reservoirs

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Romain Nathan Hippolyte Merlin Van Mol

Reservoir sedimentation is known to be a key issue worldwide. One operational measure to deal with sediment accumulations is flushing; however, efficiency is often lacking. The goal of this study is thus to improve the effectiveness and efficiency of flush ...

LNEC2024

Effects of flow guide walls on sediment flushing in peaking hydropower reservoirs

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Romain Nathan Hippolyte Merlin Van Mol

Reservoir sedimentation is known to be a key issue worldwide. One operational measure to deal with sediment accumulations is flushing; however, efficiency is often lacking. The goal of this study is thus to improve the effectiveness and efficiency of flush ...

ETH Zurich2024

Plunging Circular Jets: Experimental Characterization of Dynamic Pressures Near the Stagnation Zone

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Gregoire Aurelien Marie Jamet

Spillways are a requirement for dams’ safety, mainly preventing overtopping during floods. A common spillway solution involves plunging jets, which dissipate a considerable flow energy in the plunge pool. Energy dissipation has to occur in a controlled man ...

2022

Overflow pressure characterization in lined plunge pools for slab sizing

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Francisca Marco Cutillas

This study presents an experimental work on dynamic pressures at the bottom of a lined plunge pool that receives overflow rectangular impinging jets and aims at improving the design criteria for pool slabs. The experiments were conducted in a fairly large ...

International Association for Hydro-Environment Engineering and Research (IAHR)2022

Production flexibility of small run-of-river power plants: KWGO smart-storage case study

Pedro Filipe De Almeida Manso, Steve Crettenand, Matthieu Dreyer, Vlad Hasmatuchi, Jessica Zordan, Siamak Alimirzazadeh

In the framework of the new Swiss feed-in-tariff system for Small Hydropower Plants (SHP), the aim of the SmallFLEX project, led by HES-SO Valais and performed in collaboration with EPFL, WSL, EAWAG, PVE and FMV, is to show how SHP can provide winter peak ...

IOP PUBLISHING LTD2021

Swiss Potential for Hydropower Generation and Storage - Synthesis report

François Avellan, Pedro Filipe De Almeida Manso, Paolo Burlando, David Felix, Martin Schmid

Hydropower (HP) is the backbone of the Swiss electricity system providing around 60 % (36 TWh/a) of the total electricity generated on a yearly average. With the planned phase-out of nuclear power plants, HP and other Renewable Energy Sources (RES) will ne ...

ETH Zurich2021

Development of a Semi-distributed Hydrological Model for Glaciated Punatshangchu Basin in Bhutan

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Jessica Zordan, Vasker Sharma

Hydropower plays a pivotal role in the socio-economic development of Bhutan where water resource is abundantly available and therefore several hydropower plants are being planned and a few under construction. However, with the presence of several potential ...

2021

Single-phase SPH modelling of plunge pool dynamic pressures at a near-prototype scale

Pedro Filipe De Almeida Manso

The turbulent plunging jet of a nearly incompressible fluid into a stagnant fluid is of great importance in many practical applications, especially for the engineering of hydropower. As an example, the dynamic load exerted by the impact of turbulent high-v ...

Taylor & Francis Ltd2021

Seismic Behavior of Pine Flat Concrete Gravity Dam Using Microplane Damage-Plasticity Model

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Samuel Luke Vorlet

The response of concrete gravity dams under seismic loads is a major concern of dam safety assessment in earthquake-prone areas. This study focuses on the seismic analysis of the tallest non-overflow monolith of Pine Flat Dam. The paper presents results of ...

Springer, Cham2020

Numerical Simulations of an Innovative Water Stirring Device for Fine Sediment Release: The Case Study of the Future Trift Reservoir

Pedro Filipe De Almeida Manso, Azin Amini, Anass Chraibi

Reservoir sedimentation and consequently lack of storage volume and perturbation of the operation of intakes and bottom outlet is a key challenge affecting both hydropower production as well as dam safety and flood management. In the framework of a peer-re ...

Springer2020

The sediment challenge of Swiss river corridors interrupted by man-made reservoirs

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Samuel Luke Vorlet, Christian Mörtl

Depending on their characteristics and management, man-made reservoirs can have a significant impact on the natural sediment continuity of rivers. We classify different reservoir types and describe potential risks for the dam and downstream river reach. Ou ...

CRC Press2020

Heightening of Very High Gravity Dams: The Case Study of the Grande Dixence

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Basile Clerc

Heightening very high gravity dams is one of the solutions considered as part of the energy transition and to mitigate the effects of climate change. The paper presents a stepwise approach to assess the potential for dam heightening and its impact on the h ...

Springer, Cham2020

Experimental and numerical investigations of a high-head pumped-storage power plant at speed no-load

François Avellan, Pedro Filipe De Almeida Manso, Cécile Münch-Alligné, Vlad Hasmatuchi

Due to the increasing integration of new renewable energies, the electrical grid undergoes more frequent instabilities. Hydroelectric power plants, particularly pumped storage plants, are well suited for grid control. However, this objective requires exten ...

IOP PUBLISHING LTD2019

Synergies entre la production hydroélectrique et la protection contre les crues : cas d'étude de la Sihl en Suisse

Frédéric Jordan, Anton Schleiss, Pedro Filipe De Almeida Manso, Fränz Zeimetz

Située à la confluence de deux cours d'eau – la Limmat et la Sihl – la ville de Zurich a toujours dû faire face aux crues. Suite aux crues de 2005, un projet de dérivation de la Sihl vers le lac de Zurich en amont de la ville a été lancé. En alternative à ...

2019

Potential increase in energy storage capacity in the Swiss Alps to support the massive development of renewables: Case study of the Grande Dixence hydropower scheme

Anton Schleiss, Pedro Filipe De Almeida Manso, Blaise Monay, Jérôme François Sylvain Dujardin

Only 42 % of the mean annual production of large hydropower plants in the Swiss Alps is stored in their reservoirs. Once the reservoirs are full at the end of the summer semester, plants are operated as run-on-the-river in order to avoid spilling. A signif ...

2019

Improving hydropower flexibility by synergizing independently managed utilities

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Steve Crettenand, Sabine Chamoun, Vincent Gaertner

Increasing the flexibility of hydropower allows operators to produce at optimal time ranges, not only dependent on the demand flow but also on the price trends. However, the possibility to improve hydropower flexibility can be hindered when assets are mana ...

Hydropower&Dams, Aqua Media International2019

Introducing flexibility in alpine small hydropower plants using smart storage

Pedro Filipe De Almeida Manso, Steve Crettenand, Jessica Zordan

Small hydropower plants can improve their proficiency if they are able to become more flexible on power production, answering the need of peak energy demand, following the needs of the energy market and providing ancillary services in the electricity suppl ...

Hydropower&Dams, Aqua Media International2019

Innovative methods to release fine sediments from reservoirs developed at EPFL, Switzerland

Giovanni De Cesare, Anton Schleiss, Pedro Filipe De Almeida Manso, Azin Amini, Sabine Chamoun

Electricity generation, water supply, flood protection, flow regulation and navigation are amongst the main services provided by reservoirs. Sedimentation affects the sustainability of reservoirs, by reducing their storage capacity, and increases the negat ...

2019

Hydropeaking mitigation measures in the Swiss Upper-Rhône basin

Pedro Filipe De Almeida Manso, Steve Crettenand, Sabine Chamoun, Mathieu Pierre Guy Barnoud

Hydropower operations can cause hydropeaking particularly in the case of pumped storage systems located in mountainous regions. Due to the rapidly varying discharge conditions, hydropeaking leads to several problems such as stranding of fishes and inverteb ...

2019

One-dimensional fluid–structure interaction models in pressurized fluid-filled pipes: a review

Anton Schleiss, Pedro Filipe De Almeida Manso

The present review paper aims at collecting and discussing the research work, numerical and experimental, carried out in the field of Fluid–Structure Interaction (FSI) in one-dimensional (1D) pressurized transient flow in the time-domain approach. Backgrou ...

2018