desilting facility; trapping efficiency; sediment handling; flow-sediment interaction; 3D numerical simulation; settling basin; turbine abrasion
Paschmann Christopher, Fernandes João Nuño, Vetsch David Florian, Boes Robert Michael (2017), Experimental setup for flow and sediment flux characterization at desanding facilities, in Flow Measurements and Instrumentation
, 54, 197-204.
Paschmann Christopher, Fernandes João Nuño, Vetsch David Florian, Boes Robert Michael (2017), Assessment of flow field and sediment flux at alpine desanding facilities, in Intl. Journal of River Basin Management
, 15(3), 287-295.
Paschmann Christopher, Fernandes João Nuño, Vetsch David Florian, Boes Robert Michael (2016), Flow field and sediment flux measurements at an Alpine desanding facility, in Weber Karolin, Noack Markus, Terheiden Kristina, Haun Stefan, Wieprecht Silke (ed.), Taylor & Francis Ltd, London, 1141-1145.
Paschmann Christopher, Fernandes João, Vetsch David, Boes Robert (2016), Messungen von Strömungsfeld und suspendierten Sedimenten an Entsandern von Wasserkraftanlagen
, TU Müchen, Lehrstuhl und Versuchsanstalt für Wasserbau und Wasserwirtschaft, München.
Paschmann Christopher, Vetsch David Florian, Albayrak Ismail, Boes Robert Michael (2015), Evaluation von Simulationssoftware im Hinblick auf Fliess- und Absetzvorgänge in Entsandern alpiner Wasserkraftanlagen
Paschmann Christopher, Fernandes João Nuno, Vetsch David Florian, Boes Robert Michael, Flow field and sediment flux measurements at alpine desanding facilities, in International Symposium on River Sedimentation
, University of Stuttgart, Stuttgart.
With the federal “Energiestrategie 2050” hydropower production is supposed to increase substantially to partly compensate for the planned nuclear power pull-out. Besides upgrades of existing hydropower plants (HPP), there is still a considerable energy potential from new developments. However, due to the climate change, high sediment yield negatively impacts HPP infrastructures and hence power generation in Alpine regions. Particularly, suspended sediment particles in turbine waters cause significant hydro-abrasive wear at turbines and steel hydraulics parts, resulting in reduced efficiency and hence negative impact on power production and revenue as well as substantial maintenance cost at HPP. This abrasion problem is directly related to the efficiency of desilting facilities (less efficiency, more abrasion), which is a key factor for sustainable and improved HPP operation under severe sediment conditions such as in Alpine regions. Operational experience indicates that desilting facilities are often not working properly.With the proposed research project we aim at providing an improved hydraulic design guideline for desilting facilities at HPP with an emphasis on the effects of different headwork arrangements. Therefore, we intend to systematically investigate the effect of the approach flow conditions on the behaviour of particle settling and the trapping efficiency of settling basins by means of field experiments and numerical simulations. The outputs of this investigation will help to advance the understanding of flow-sediment interactions in desilting basins under field conditions, and to provide a numerical tool to simulate and optimize desilting facilities to increase the scheme efficiency.