Browsing Institutt for bygg- og miljøteknikk by Title
Now showing items 1939-1958 of 4651
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Hydraulic Scale Modeling of Sediments for Pressurized Sand Traps
(Master thesis, 2018)I senere år har flere norske vannkraftverk opplevd driftsproblemer på grunn av sedimenter i turbinvannet. Dette kan føre til redusert virkningsgrad på turbin og dermed økonomiske tap. Et forskningsprosjekt på sandfang har ... -
Hydraulic scale modelling and thermodynamics of mass oscillations in closed surge tanks
(Journal article; Peer reviewed, 2015)The design and results from a hydraulic scale model of mass oscillations in a hydropower plant with a closed surge tank constructed as an underground rock cavern are presented. The results from the model test of an existing ... -
Hydraulic Scale Modelling of Flow Calming Structures for Hydropower Plants
(Master thesis, 2019)Several large hydropower plants in Norway have been upgraded with a higher installed capacity, but unfortunately, this upgrade has also brought with it operational problems because of sediments entering penstock and causing ... -
Hydraulic scale modelling of the rating curve for a gauging station with challenging geometry
(Peer reviewed; Journal article, 2019)Direct discharge measurements during flood events can be challenging from a technical as well as from a safety point of view. Therefore, flood discharges are often estimated by extrapolating a rating curve. Extrapolations ... -
Hydraulic Structures- At the Heart of 21st Century Global Sustainable Development
(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 ... -
Hydraulic Transient Impact on Surrounding Rock Mass of Unlined Pressure Tunnels
(Peer reviewed; Journal article, 2023)The frequent pressure pulsations due to hydraulic transients in hydropower plants induce cyclic loading on the rock mass that may contribute to increased instances of block falls and increased risk of tunnel collapse over ... -
Hydraulisk modellering av kraftverksdrift i Tokkeåi
(Master thesis, 2017)En todimensjonal hydraulisk modell har blitt konstruert i HEC-RAS 5.0 for elven Tokkeåi (5 km lang) i Telemark. Hovedformål for oppgaven er å vurdere graden av effektkjøring av kraftverk. Elven deler seg i flere løp, noe ... -
Hydraulisk utforming av nedløp fra gateavrenning
(Master thesis, 2015)I denne masteroppgaven er det sett på hvordan den hydrauliske kapasiteten til forskjellige rister varierer med hensyn på helning, vannføring i vegbanen, ristutforming og størrelse. Det er sett på hvordan kapasiteten beregnes ... -
Hydrodynamic Coupling of Viscous and Non-Viscous Numerical Wave Solutions Within the Open-Source Hydrodynamics Framework REEF3D
(Chapter, 2021)A comprehensive understanding of the marine environment in the offshore area requires phase-resolved wave information. For the far-field wave propagation, computational efficiency is crucial, as large spatial and temporal ... -
Hydrodynamic Coupling of Viscous and Nonviscous Numerical Wave Solutions Within the Open-Source Hydrodynamics Framework REEF3D
(Peer reviewed; Journal article, 2022)A comprehensive understanding of the marine environment in the offshore area requires phase-resolved wave information. For far-field wave propagation, computational efficiency is crucial, as large spatial and temporal ... -
Hydrodynamic modelling of physical habitat conditions for fish in the Ekso river near Flatekval
(Master thesis, 2018)In this study, a 2D hydrodynamic model HEC-RAS is used to simulate the flood inundation, water depths and flow velocities of the river reach in the Eksingedal watercourse near Flatekval in western Norway. The objectives ... -
Hydrodynamic optimization of wetland restoration measures at the Storelva river floodplain with its meanders and oxbow lakes in Southern Norway
(Master thesis, 2019)The “Fellesprosjektet Ringeriksbanen og E16” is an infrastructure project in the south of Norway connecting Oslo and shortening the travel time with the new housing and develop-ment area of Ringerike. For the connection ... -
Hydrodynamic rainfall-runoff modelling for flash floods in small and steep catchments
(Doctoral theses at NTNU;2024:261, Doctoral thesis, 2024)Global warming and climate change lead to more frequent and extreme weather events. These include sudden and intense rainfall and rising temperatures which cause flash floods. In steep terrains, flash floods with high-flow ... -
Hydrogen- og Vannkraftproduksjon - synergier og utfordringer
(Master thesis, 2021)Stryn Sommerski bruker i dag et dieselaggregat for å produsere strøm. Dette gir et utslipp på 61.4 tonn CO2 per år. I tillegg kommer utslipp fra tråkkemaskin og snøskuter. Dette er et betydelig utslipp, og passer dårlig i ... -
Hydrologic and metal removal potential of filtering swales for stormwater control in cold climates
(Doctoral theses at NTNU;2018:37, Doctoral thesis, 2018)Runoff from urban areas carries a wide range of pollutants both particle-bound and dissolved. Dissolved pollutants are generally more mobile and bioavailable as well as more difficult to remove by conventional infiltration ... -
Hydrologic performance modelling of green roofs using conceptual and data-driven modelling tools
(Doctoral theses at NTNU;2023:425, Doctoral thesis, 2023)With climate change and rapid urbanization, the amount and intensity of stormwater flow are expected to increase, leading to frequent failures and overflows of conventional stormwater infrastructures. To address this issue, ... -
Hydrological Analysis of Tekeze Hydropower System in the Current and Future Climate
(Master thesis, 2015)Climate change is expected to intensify the already high hydrological variability and energy production in various regions of the world. This research work investigates the runoff and energy production in the current and ... -
Hydrological and thermal effects of hydropeaking on early life stages of salmonids: A modelling approach for implementing mitigation strategies
(Journal article; Peer reviewed, 2016)Alterations in hydrological and thermal regimes can potentially affect salmonid early life stages development and survival. The dewatering of salmon spawning redds due to hydropeaking can lead to mortality in early life ... -
Hydrological Assessment of Water Resources in Bergen - Climate Change Impacts
(Master thesis, 2015)Bergen Waterworks is reliant on steady loads of precipitation to meet the drink- ing water demand. Accordingly, the system is vulnerable to drought events and seasonal changes in inflow. Climate change impact analysis, as ... -
Hydrological forecasting and seasonal planning using PineHBV and ProdRisk: A case study for Enguri Powerplant cascade in Georgia
(Master thesis, 2023)Hydrologisk modellering er en avgjørende del av kraftmarkedet, og er en viktig faktor for økonomisk suksess og sikkerhet for vannkraftprosjekter. Denne studien implementerer PINE-HBV-modellen for å få de langsiktige ...