Blar i NTNU Open på forfatter "Pummer, Elena Marianne"
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Effects of Bottom-Up Blockage on Entrance Loss Coefficients and Head-Discharge Relationships for Pipe Culvert Inlets: Comparisons of Theoretical Methods and Experimental Results
Sellevold, Joakim Carlsønn; Norem, Harald; Bruland, Oddbjørn; Rüther, Nils; Pummer, Elena Marianne (Journal article; Peer reviewed, 2023)Culvert blockage is a recognized problem known to increase the risk of cross-drainage failure. Presently, the effects of bottom-up inlet blockage can be estimated using the theoretically derived energy loss method (ELM) ... -
Experimental and numerical investigations of the water surface profile and wave extrema of supercritical flows in a narrow channel bend
Kadia, Subhojit; Larsson, Sofia; Billstein, Mats; Lia, Leif; Pummer, Elena Marianne (Journal article; Peer reviewed, 2024)Supercritical flows in channel bends, e.g., in steep streams, chute spillways, and flood and sediment bypass tunnels (SBTs), experience cross-waves, which undulate the free surface. The designs of these hydraulic structures ... -
Hydraulic efficiency and optimization of pipe culvert inlet edges
Sellevold, Joakim Carlsønn; Bruland, Oddbjørn; Pummer, Elena Marianne (Peer reviewed; Journal article, 2023) -
Hydraulic Structures- At the Heart of 21st Century Global Sustainable Development
Mulligan, Sean; Felder, Stefan; Pummer, Elena Marianne; Valero, Daniel; Heller, Valentin; Erpicum, Sebastien; Oertel, Mario; Bombardelli, Fabian; Crookston, Brian (Journal article, 2023)For millennia, societal progress, health and prosperous economic growth has been closely linked to development of water infrastructure. Now in the 21st century, humankind faces some immense challenges including increasing ... -
Mapping Sites for Retrofitting non-Powered Dams in Romania as Renewable Power Sources
Dunca, Georgiana; Bucur, Diana Maria; Bakken, Tor Haakon; Harby, Atle; Pummer, Elena Marianne; Istrate, Marcel; Boariu, Costel; Roman, Costica (Chapter, 2023)In the context of growing need for energy and the shift to low-carbon energy sources, innovating solutions in the renewable energy sector are encouraged. Currently, hydropower is the largest source of renewable energy in ... -
An OpenFOAM solver for computing suspended particles in water currents
Olsen, Nils Reidar Bøe; Kadia, Subhojit; Pummer, Elena Marianne; Hillebrand, Gudrun (Peer reviewed; Journal article, 2023)A new OpenFOAM solver has been developed for computing the spatial variation of particle concentrations in flowing water. The new solver was programmed in C ++ using OpenFOAM libraries, and the source code has been made ... -
Peculiarities of the run-off-river hydropower potential in Romania
Boariu, Costel; Roman, Costica; Istrate, Marcel; Bakken, Tor Haakon; Harby, Atle; Pummer, Elena Marianne; Dunca, Georgiana; Bucur, Diana Maria (Journal article; Peer reviewed, 2024)This research discusses the hydropower potential of hydraulic structures that were originally built for other uses, including hydrological and energy data. The historically known average specific water discharge of rivers ... -
A Reformed Empirical Equation for the Discharge Coefficient of Free-Flowing Type-A Piano Key Weirs
Kadia, Subhojit; Pummer, Elena Marianne; Kumar, Binit; Rüther, Nils; Ahmad, Zulfequar (Peer reviewed; Journal article, 2023)The existing equations for the discharge coefficient of Piano key weirs (PKWs) use a limited range of experimental data, which means that they are inappropriate for wide parametric ranges that might lead to significant ... -
Review of Structural Mitigation Measures for Glacial Lake Outburst Floods
Hrebrina, Jan; Conevski, Slaven; Pummer, Elena Marianne (Chapter, 2023)Glacial lake outburst floods (GLOFs) can pose significant threats to human life, property, and ecosystems. These flood events are strongly influenced by the retreat of glaciers and thus by climate change. Global warming ...