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Anton Schleiss

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Publications associées (470)

Hydropower as a catalyst for the energy transition within the European Green Deal: Part II: The complex environment of hydropower, biodiversity challenges and main innovation and research directions

Anton Schleiss

The European Union has the ambition to be the first carbonneutral continent by 2050. To fulfil this objective and integrate into the grid the large amount of power from solar and wind, Europe can rely upon the high storage and flexible capacity of hydropow ...

2022

Air-water flow in a plain stilling basin below smooth and stepped chutes

Anton Schleiss, Ivan Stojnic

In recent decades, stepped chutes followed by a stilling basin became a standard for spillways of dams. The comprehensive knowledge of stepped chute approach flows on internal air-water flow properties of the hydraulic jump is still too limited for an appr ...

Taylor & Francis Ltd2022

Plain Stilling Basin Performance below 30 degrees and 50 degrees Inclined Smooth and Stepped Chutes

Anton Schleiss

Energy dissipators, such as stilling basins, are usually required at the toe of stepped chutes to achieve adequate and safe operation of the spillway. Stepped chute hydraulics has been extensively studied in last several decades, however, only limited know ...

MDPI2022

Blockage Probability Modeling of Large Wood at Reservoir Spillways With Piers

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

Large wood increases the morphological and hydraulic complexity of rivers, yet it may block and modify the flood discharge capacity of hydraulic structures. To assess the related risk, blockage probability estimation for hydraulic structures such as reserv ...

2021

Experimental and Numerical Study on Scour-Protection Methods in a Stilling Basin: Case Study of Chancy-Pougny Dam

Giovanni De Cesare, Erik Bollaert, Anton Schleiss, Sabine Chamoun, Davide Wüthrich

Chancy-Pougny is a run-of-river dam on the Swiss–French border constructed in the early 1920s. Since its commissioning, the operation of the four spillway gates has been responsible for a progressive erosion of the stilling basin. The future scour potentia ...

2021

Assessing the energy potential of modernizing the European hydropower fleet

Anton Schleiss, Elena Vagnoni

About 50% of all hydropower plants (HPPs) worldwide were originally commissioned more than 40 years ago, so that the advanced age of the fleet is a major concern across all continents, and especially in Europe. The modernization of HPPs can generate severa ...

Elsevier2021

Design of orifices for throttled surge tanks

Giovanni De Cesare, Anton Schleiss, Nicolas Jean François Pascal Ghislain Adam

Orifices can be used for throttling surge tanks, which allows for increased design discharge at existing powerplants without significant geometrical modifications. To improve knowledge about the behaviour of orifices and their cavitation risk, a systematic ...

2021

Parameterization and Results of SWE for Gravity Currents Are Sensitive to the Definition of Depth

Anton Schleiss, Sara Venuleo

Rigorously derived shallow water equations (SWEs) are applied to results of large eddy simulation (LES) of a continuously fed gravity current in order to assess (1) sensitivity of current depth results to its definition; (2) coefficients in depth-averaged ...

2021

Künstliche Hochwasser in Restwasserstrecken unter Berücksichtigung von Geschiebevorkommen, hydromorphologischer und ökologischer Indikatoren

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Christopher Robinson, Severin Stähly

Stauanlagen mit großen Speichern beeinflussen oftmals das Abfluss- und Geschieberegime im Gewässerunterlauf. Dadurch kann die natürliche Dynamik, Morphologie und Ökologie von noch verbliebenen Auenlandschaften erheblich beeinträchtigt werden. In der Saane ...

2021

Bemessungsbeispiele von Tosbecken unterhalb von Treppenschussrinnen = Design examples of stilling basins downstream of stepped spillways

Giovanni De Cesare, Anton Schleiss, Ivan Stojnic

Advances of roller compacted concrete (RCC) in the construction of concrete dams has significantly influenced the development of stepped spillways. The latter are now more frequently implemented in the rocky abutments of embankment dams. The energy dissipa ...

2021

Failure of saddle dam, Xe-Pian Xe-Namnoy project: executive summary

Anton Schleiss, Anass Chraibi

The Saddle Dam D at the Hydroelectric Power project Xe-Pian Xe-Namnoy in the Lao People’s Democratic Republic failed on July 23, 2018. An Independent Expert Panel (IEP) was established to investigate into and report on the failure of the embankment dam. Th ...

Springer, Cham2020

Design of sediment detention basins: Scaled model experiments and application

Anton Schleiss, Mona Jafarnejad Chaghooshi, Sebastian Schwindt, Anita Hélène Roth

Sediment detention basins are implemented on mountain rivers to trap solid material that may aggravate the flooding of downstream settlements. However, retention structures built in the past may unnecessarily retain sediment during non-hazardous flood even ...

2020

Influence of collars on reduction in scour depth at two piers in a tandem configuration

Giovanni De Cesare, Anton Schleiss, Sargol Memar

Bridge failure, due to local scour at bridge pier foundations, has become a critical issue in river and bridge engineering, which might lead to transportation disruption, loss of lives and economic problems. A practical solution to prevent bridge collapses ...

SPRINGER INTERNATIONAL PUBLISHING AG2020

Hydropower Europe Workshop in Lausanne

Anton Schleiss

2020

Hydraulic design of classical stilling basins downstream of stepped chutes

Giovanni De Cesare, Anton Schleiss, José Pedro Gamito de Saldanha Calado Matos, Michael Pfister, Ivan Stojnic

New design information regarding the hydraulic behaviour of classical stilling basins downstream of stepped chutes is presented and discussed. An extensive experimental campaign revealed that classical stilling basins preceded by stepped chutes cannot be a ...

2020

Statistical accuracy for estimations of large wood blockage in a reservoir environment

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

The blockage of weirs or bridges by in-stream wood can reduce the flood discharge capacity, leading to hazardous situations. To assess the related risk, blocking probabilities quantifications are needed. However, large wood has a random behaviour and it is ...

SPRINGER2020

Hydraulic transients in hydropower systems: from theory to practice

Giovanni De Cesare, Anton Schleiss, David Ferràs Segura

2020

Forces on buildings with openings and orientation in a steady post-tsunami free-surface flow

Anton Schleiss, Michael Pfister, Davide Wüthrich

Steady free-surface flows around buildings occurring during flood or tsunami events can produce major damages and a quantification of the post-peak forces is essential for safety and resilience of coastal structures. The loading process is highly affected ...

2020

Effect of 30-Degree Sloping Smooth and Stepped Chute Approach Flow on the Performance of a Classical Stilling Basin

Anton Schleiss, José Pedro Gamito de Saldanha Calado Matos, Michael Pfister, Ivan Stojnic

Advances in dam construction techniques have significantly increased the number of stepped spillways implemented worldwide. Although stepped chutes provide enhanced energy dissipation along the chute, as compared to smooth chutes, an adequate energy dissip ...

2020

Estimation spatiale des précipitations et assimilation de données de débit pour la prévision hydrologique en milieu alpin

Giovanni De Cesare, Bettina Schaefli, Anton Schleiss, Javier García Hernández, Alain Tommy Foehn, Andrea Rinaldo

L’étude présentée propose des solutions à certains défis rencontrés dans le cadre du système de prévision et de gestion des crues MINERVE du Canton du Valais, opérationnel depuis 2013. Le premier axe de recherche est dédié à l’interpolation spatiale des pr ...

2020

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