Blar i NTNU Open på forfatter "Storli, Pål-Tore Selbo"
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A New Technical Concept for Water Management and Possible Uses in Future Water Systems
Storli, Pål-Tore Selbo; Lundstrøm, T. Staffan (Journal article; Peer reviewed, 2019)A new degree of freedom in water management is presented here. This is obtained by displacing water, and in this paper is conceptually explained by two methods: using an excavated cavern as a container for compressed air ... -
A test of the v 2-f k-epsilon turbulence model for the prediction of vortex shedding in the Francis-99 hydrofoil test case
Sagmo, Kristian Forfot; Storli, Pål-Tore Selbo (Journal article; Peer reviewed, 2019)A test of the v 2 − f k − epsilon turbulence model for the flow around the Francis-99 hydrofoil geometry is conducted in order to assess it's accuracy of trailing edge vortex shedding prediction. The model is based on the ... -
Adaptively Learned Modeling for a Digital Twin of Hydropower Turbines with Application to a Pilot Testing System
Wang, Hong; Ou, Shiqi; Dahlhaug, Ole Gunnar; Storli, Pål-Tore Selbo; Skjelbred, Hans Ivar; Vilberg, Ingrid Kristine (Peer reviewed; Journal article, 2023)In the development of a digital twin (DT) for hydropower turbines, dynamic modeling of the system (e.g., penstock, turbine, speed control) is crucial, along with all the necessary data interface, virtualization, and dashboard ... -
An Analytical quasi 2D steady-state Francis turbine model using first principles
Storli, Pål-Tore Selbo; Trivedi, Chirag (Journal article; Peer reviewed, 2022) -
Design of a contra-rotating booster pump
Hage, Ingrid Befring (Master thesis, 2020)Den aukande utbygginga av uregulerte energikjelder, som vind- og solkraft, gjer ei reguleringskjelde nødvendig. Dette kan oppnås ved bruk av pumpekraftverk til lagring av energien produsert av dei uregulerte kjeldene. I ... -
Design of a reversible pump turbine for retrofitting in a preexisting hydropower plant.
Escher, Jan-Karl Lasse (Master thesis, 2020)I denne oppgåva vert det gjort ein freistnad på å formgje ein reversibel pumpeturbin til innsetjing i eit allereie eksisterande kraftverk. På grunn av måten det det noværande kraftverket er forma utvidar det tverrsnittlege ... -
Design of Groundwater Heat Pump Systems. Principles, Tools, and Strategies for Controlling Gas and Precipitation Problems
Gjengedal, Sondre; Stenvik, Lars Aaberg; Storli, Pål-Tore Selbo; Ramstad, Randi Kalskin; Hilmo, Bernt Olav; Frengstad, Bjørn S. (Journal article; Peer reviewed, 2019)The utilization of groundwater heat pump systems is increasing in Norway, which are currently widely employed for heating and cooling applications in the town center of Melhus. The investigations of the Melhus installations ... -
Design study of a reversible lobe pump-turbine for low-head seawater pumped hydro storage applications
Gans, Luiz Henrique Accorsi (Doctoral theses at NTNU;2024:116, Doctoral thesis, 2024) -
Dynamic load on a Francis turbine runner from simulations based on measurements
Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian (Journal article; Peer reviewed, 2014)The frequency of the Nordic power grid has become more volatile during recent years. This gives rise to two effects in synchronous machines. Firstly, as grid frequency changes the rotational speed of synchronous machines ... -
Erosion in Francis turbines due to geometrical positioning of runner and guide vanes
Acharya, Nirmal (Doctoral theses at NTNU;2022:301, Doctoral thesis, 2022)Hydro-abrasive erosion in turbine components is one of the prominent operational challenges for hydropower plants located across basins of regions such as Himalayas in Asia, the Andes in South America, and Pacific coast. ... -
An experimental and numerical study of a three-lobe pump for pumped hydro storage applications
Gans, Luiz H.A.; Trivedi, Chirag; Iliev, Igor; Storli, Pål-Tore Selbo (Peer reviewed; Journal article, 2023)Pumped hydro storage (PHS) plays an important role as a matured technology that accounts for the vast majority of global energy storage capacity, and its expansion is therefore desirable. The expansion of PHS in mid- and ... -
Fast Transition between Operational Modes of a reversible Pump-Turbine
Svarstad, Magni Fjørtoft (Doctoral theses at NTNU;2019:49, Doctoral thesis, 2019)The future demands of energy production to balance more intermittent energy sources creates two main technical challenges for the hydro power production. Increased off-design operation, including both operation outside ... -
Francis-99: Coupled simulation of the resonance effects in runner channels
Tengs, Erik Os; Fevåg, Live Salvesen; Storli, Pål-Tore Selbo (Journal article; Peer reviewed, 2019)A resonance phenomenon is observed experimentally in the runner channels of the Francis-99 model turbine runner. An incompressible CFD simulation is unable to simulate this. Two different coupled physics schemes are therefore ... -
Hydraulic design of a turbine for energy recovery purposes
Størksen, Mari Skauge; Lund, Selma Aurora (Master thesis, 2023)Denne masteroppgaven fokuserer på design og analyse av en komplett Francisturbin for Framo AS med formål om energiutvinning i offshore-applikasjoner. Turbindesignet skiller seg fra konvensjonelt design ved at den ikke har ... -
Hydropower
Cavazzini, Giovanna; Storli, Pål-Tore Selbo; Nielsen, Torbjørn Kristian (Chapter, 2021)Hydropower has a very long tradition in many countries and was first used to provide working power for grinding corn, sawing timber and other previously manual tasks. The development of the modern turbine took a big step ... -
Investigation of corner vortex in radial cascade and interaction with the trailing edge vortex
Kamalaraja, Arunn (Master thesis, 2021)Virvelavløsning fra objekter er et strømningsfenomen som kan finnes blant industrielle applikasjoner. Strømningsfenomenet avløser virvler som fører til vibrasjon. Denne vibrasjonen kan forsterkes, dersom virvelavløsningsfrekvensen ... -
Low-head pumped hydro storage: A review of applicable technologies for design, grid integration, control and modelling
Hoffstaedt, Justus; Truijen, Daan; Fahlbeck, Jonathan; Gans, Luiz Henrique Accorsi; Qudaih, Mohammed; Laguna, Antonio Jarquin; De Kooning, Jeroen; Stockman, Kurt; Nilsson, Håkan; Storli, Pål-Tore Selbo; Engel, Bernd; Marence, Miroslav; Bricker, Jeremy (Peer reviewed; Journal article, 2022)To counteract a potential reduction in grid stability caused by a rapidly growing share of intermittent renewable energy sources within our electrical grids, large scale deployment of energy storage will become indispensable. ... -
Measurements and simulations of turbines on common grid
Nielsen, Torbjørn Kristian; Storli, Pål-Tore Selbo (Journal article; Peer reviewed, 2014)Speed droop control is of basic importance for the primary governing in the Nordic grid. The speed droop control. a mandatory and build-in regulatory loop on all larger units. is automatically changing the produced power ... -
Model Order Reduction Technique Applied on Harmonic Analysis of a Submerged Vibrating Blade
Tengs, Erik Os; Charrassier, Flora; Storli, Pål-Tore Selbo; Holst, Martin (Journal article; Peer reviewed, 2019)As part of an ongoing study into hydropower runner failure, a submerged, vibrating blade is investigated both experimentally and numerically. The numerical simulations performed are fully coupled acoustic-structural ... -
Modelica model of transient pipe flow in hydraulic laboratory systems using the method of characteristics
Hinna, Jonas Tveit (Master thesis, 2021)Eksperimentelle oppsett i hydrauliske laboratoriesystemer er ofte avanserte. Målinger, f.eks. ved innløpet til turbiner, kan bli påvirket av det hydrauliske oppsettet og av karakteristikken til strømningen oppstrøms i ...