Concept

Reservoir

Related publications (130)

Evolution of reservoir flushing and emptying practices in a cascade of large reservoirs across several decades

Giovanni De Cesare, Pedro Filipe De Almeida Manso, Samuel Luke Vorlet, Sebastián Guillén Ludeña

Reservoir sedimentation is, at present, one of the main concerns in the operational management of dams in the Alps. For larger seasonal storage reservoirs, the main operational concern is the blockage of bottom outlets and turbine abrasion. In case of infr ...

2018

Influence of density of large stems on the blocking probability at spillways

Anton Schleiss, Michael Pfister, José Pedro Gamito de Saldanha Calado Matos, Paloma Furlan

Dam safety is strongly linked to the probability of occurrence of large floods. Floods can transport large wood (LW) into reservoirs and towards water release structures as spillways. Due to blocking and clogging, LW may significantly influence the dischar ...

Utah State University2018

Spillway blockage caused by large wood in reservoirs

Anton Schleiss, Michael Pfister, José Pedro Gamito de Saldanha Calado Matos, Paloma Furlan

Large wood (LW) elements are often transported by rivers into reservoirs during heavy rainfall events. Large wood has important environmental attributes that benefit the diversification of riverine ecosystems. There are several studies dealing with the tra ...

E3S Web of Conferences2018

Effects of Lake–Reservoir Pumped-Storage Operations on Temperature and Water Quality

Alfred Johny Wüest, Martin Schmid, Ulrike Kobler

Pumped-storage (PS) hydropower plants are expected to make an important contribution to energy storage in the next decades with growing market shares of new renewable electricity. PS operations affect the water quality of the connected water bodies by exch ...

2018

Four decades of hindsight into a complex hydropower system

Anton Schleiss, Pedro Filipe De Almeida Manso, Bettina Schaefli, José Pedro Gamito de Saldanha Calado Matos

Hydropower systems often operate in contextual conditions quite different from those for which they have been planned for. Often, the pace at which the changes occur does not invite operators to analyse their long-term effects and quantify the resilience o ...

2018

The role of uncertainty in dam failure frequency estimates: a conceptual case study

Anton Schleiss, José Pedro Gamito de Saldanha Calado Matos

The return period of combinations of events that are relevant to dam risk analysis is very high. It falls in a range of hundreds to millions of years, but remains hard to quantify with precision. Deterministic approaches to dam safety assessment typically ...

CRC Press/Balkema2018

Numerical Modeling of turbidity currents with Ansys CFX and Telemac 3D

Anton Schleiss, Giovanni De Cesare, Sabine Chamoun

Turbidity currents may be a relevant lever to manage the accumu-lation of fine sediments in reservoirs. In this paper, we propose to show how two different numerical codes simulate the propagation of turbidity currents. Telemac 3D and Ansys CFX 17.1 solver ...

2018

Effect of spilling from adjacent orifices on the velocity field and pressures in front of needle stop-logs

Giovanni De Cesare, Azin Amini, Cédric Bron, Ivan Stojnic

In this study, the effect of spilling from neighboring sluice gates on stop-logs was experimentally investigated on a 1:65 physical scale model comprised of a double arch dam, a reservoir area, six spillway orifices and two stop-logs. Two types of measurem ...

2018

Sediment balance of a cascade of alpine reservoirs based on multi-decadal data records

Anton Schleiss, Pedro Filipe De Almeida Manso, Sebastián Guillén Ludeña

Reservoir sedimentation is a major concern in the operational management of dams and appurtenant structures. The increasing volume of sediments deposited in reservoirs leads to a loss of water storage, undermining the purpose itself of the dam for human us ...

2018

Floating modular unit for controlled sediment flushing regarding sediment size and concentration

Giovanni De Cesare

Sediment management is a challenging discipline, especially in regions where the storage capacity of reservoirs decreases due to sediment accumulation. This paper shows an innovative and holistic modular technical approach to the problem, considering a gre ...

ed. Hydropower&Dams, Aqua Media International2018

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