Blar i NTNU Open på forfatter "Pummer, Elena"
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CFD Simulations of Open and Closed Sand Trap Design for Tonstad Hydropower Plant
Næss, Rakel (Master thesis, 2020)Denne masteroppgaven handler om numerisk modellering (“Computational Fluid Dynamics”, CFD) av Sandfang 3 ved Tonstad kraftverk med dagens utforming og rekonstruert med horisontale ribber. Det ble observert sedimentproblemer ... -
Dynamics of Debris Flow: Reproducible Initial and Boundary Conditions in Scaled Laboratory Experiments to Determine Velocity Distributions
Voßkämper, Berit; Kowalski, Julia; Dufresne, Anja; Schüttrumpf, Holger; Pummer, Elena (Chapter, 2019)Debris flows are rapid flows of water, sediments and debris, which can pose a danger to life and infrastructure. Reducing the risk by implementing protections and countermeasures requires a comprehensive understanding of ... -
Hydraulic modeling of free surface flow and scour around bridge piers
Bedringås, Ole Jakob (Master thesis, 2023)Tidligere kunne kajakkpadlere surfe på en stående bølge under Sluppen bru i Nidelva i Trondheim. Imidlertid avslørte batymetrimålinger at ei erosjonsgrop hadde dannet seg nedstrøms bropilarene. Erosjonsgropa ble fylt igjen, ... -
Improved Energy Dissipation in Stepped Spillways - Hydraulic Model Study Applying Bubble Image Velocimetry
Mikalsen, Lars Marius; Thorsen, Kasper Haugaard (Master thesis, 2023)Utforming av hydrauliske konstruksjoner som sikrer tilstrekkelig energihåndtering ved flomsituasjoner er avgjørende i møte med framtidens klima. Trappetrinnsflomløp er en type energidreperkonstruksjon som har fått mye ... -
Improved Energy Dissipation in Stepped Spillways – Hydraulic Model Study Applying Bubble Image Velocimetry
Mikalsen, Lars Marius; Thorsen, Kasper Haugaard (Master thesis, 2023)Utforming av hydrauliske konstruksjoner som sikrer tilstrekkelig energihåndtering ved flomsituasjoner er avgjørende i møte med framtidens klima. Trappetrinnsflomløp er en type energidreperkonstruksjon som har fått mye ... -
Physical model-based investigation of sediment handling in a hydroelectric dam
Aryal, Bikalpa (Master thesis, 2020)In a hydropower plant dam creates a reservoir storage. This storage space is directly linked with the sedimentation in the reservoir and sediment management strategies. Almost all of the new dams constructed now a days ... -
Reynolds stress modeling of supercritical narrow channel flows using OpenFOAM: Secondary currents and turbulent flow characteristics
Kadia, Subhojit; Rüther, Nils; Ismail, Albayrak; Pummer, Elena (Peer reviewed; Journal article, 2022)In this study, the full Launder, Reece and Rodi pressure-strain model, and nonlinear boundary damping functions were incorporated in OpenFOAM® to simulate the turbulence-driven secondary currents in supercritical narrow ... -
Stepped Large Scale Spillways in Unlined Rock
Bhatta, Prashant (Master thesis, 2019)Water is an imperative source to human life. The change in climate is affecting the availability of water round the year which combined with increasing water demand has become a global problem. This has rendered water ... -
Surge Mitigation for Pumped Storage Hydropower
Pummer, Elena; Richter, Wolfgang (Journal article, 2020)