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Modelling and control of a typical high head hydropower plant
(Conference object; Peer reviewed, 2011)This paper describes an effective mathematical model of a hydropower plant and how a decentralized control strategy for frequency and terminal voltage can be simulated. Several dynamic equations are presented for each ... -
Modelling and control of collecting solar energy for heating houses in Norway
(Journal article; Peer reviewed, 2017)In this research, a new model was developed and modified with a combined solar heating system which works with solar radiation and electricity. In order to model the system, the outdoor temperature of the location and solar ... -
Modelling and Control of Two Degrees of Freedom Helicopter Model
(Master thesis, 2017)USN has built multiple two degrees of freedom helicopters models that are to be used in various courses at USN to expand the knowledge of modeling and control. The helicopter model is a highly unstable system, making it a ... -
Modelling and estimation for return mud flow during drilling
(Master thesis, 2017)Oil drilling is performed to retrieve gas and petroleum from reservoirs that can be kilometers down the earth surface. During a drilling operation, drilling fluid is pumped into the well to remove cuttings and maintain a ... -
Modelling and evaluating of Compressed Air Energy Storage System
(Master thesis, 2020)With the worldwide increase on the use of renewable energy, efficient energy storage is needed to include intermittent renewable energy sources, such as wind and solar energy. One of the energy storage technologies that ... -
Modelling and Simulation of an Electrochemically Mediated Biofilm Reactor Biogas Upgrading
(Master thesis, 2022)Marzieh Domirani et al. (2021) had developed the mechanistic model with the implementation of integration of microbial electrosynthesis (MES) with anaerobic digestion (AD) technology for biogas upgrading. The model's ... -
Modelling and Simulation of Detection Rates of Emergent Behaviours in System Integration Test Regimes
(Peer reviewed; Journal article, 2021)System level testing generally lacks coverage due to cost of performing realistic tests on the “system as a whole”. This lack in test coverage gives rise to seemingly emergent aviour at system level. The interactions between ... -
Modelling and simulation of syngas fermentation for the production of biofuels precursors
(Master thesis, 2017)Production of acetic acid and ethanol by syngas fermentation process could be an alternative way of biofuel production, and is therefore of interest to study. In accordance to literature review, gas fermentation process ... -
Modelling and simulations of bubbling fluidized bed and entrained flow biomass gasification reactors
(Doctoral dissertations at the University of South-Eastern Norway;118, Doctoral thesis, 2022-02-24)The world needs sustainable energy solutions to replace fossil fuels. Climate change is the defining challenge of our time. New reports from the International Energy Agency (IEA, 2021)1 have developed a roadmap for max ... -
Modelling heat treated lignocellulosic material as substrate in anaerobic digestion
(Master thesis, 2022)Energy and material production from lignocellulosic (wood) waste material receives increased interest as a carbon neutral economic feasible option. The master study will be carried out to gain more knowledge related to ... -
Modelling of a Hydro Power Station in an Island Operation
(Journal article; Peer reviewed, 2017)There is a strong focus on new renewable energy sources, such as, solar power, wind energy and biomass, in the con-text of reducing carbon emissions. Because of its maturity, hydropower is often overlooked. However, there ... -
Modelling of ash melts in gasification of biomass
(Doctoral dissertations at the University of South-Eastern Norway;120, Doctoral thesis, 2022-03-04)The need for advanced biofuels produced from sustainable sources is stressed, both on national and international level due to a global agreement to limit the Earth’s global warming. The major goals in the Norwegian agreement ... -
Modelling of fast fueling of pressurized hydrogen tanks for maritime applications
(Journal article; Peer reviewed, 2023)This paper studies fast fueling of gaseous hydrogen into large hydrogen (H2) tanks suitable for maritime applications. Three modeling methods have been developed and evaluated: (1) Two-dimensional computational fluid dynamic ... -
Modelling of gas explosions
(Doctoral theses at NTNU;2010:221, Doctoral thesis; Peer reviewed, 2010-12-03)The content of this thesis is a study of gas explosions in complex geometries and presentation and validation of a method for simulating flame acceleration and deflagration to detonation transition. The thesis includes a ... -
Modelling of hydrocarbon gas and liquid leaks from pressurized systems
(Master thesis, 2021)Safety is one of the most important aspects that should be guaranteed for all the employees of any industry. For oil and gas platforms, the first step will fall into the optimum design of depressurization systems for ... -
Modelling of the energy budgets at Imingfjell, Norway, using the Community Land Model (CLM4.5)
(Master thesis, 2020)Mountains are one of the most sensitive areas to climate change as they are biodiversity hotspots. One of the main problems in studying climate change for mountainous territories is the lack of meteorological data due to ... -
Modelling of Water Levels in a Reservoir using Modelica
(Journal article; Peer reviewed, 2020)The regulation of hydro power plants is influenced by amongst others reservoir capacity and the knowledge about how it is influenced by changes in in- and out?ow. The hydro power reservoir Aurdalsfjord has a small capacity ... -
Modelling temperature transition and co-digestion in VEAS biogas process
(Master thesis, 2021)Anaerobic digestion (AD) is a well-established way to stabilise concentrated sludge produced in wastewater treatment (WWT) plants. The benefit of the process is the production of biomethane and digestate that can be used ... -
Modelling the Emission Offseting Potential of Rooftop Solar Panels
(Master thesis, 2023)This study empirically investigates the emission-offsetting potential of rooftop solar panels in a group of cities across three continents. By use of experimental big data from the Google Environmental Insights Explorer ... -
Modelling the heat dynamics of a residential building unit: Application to Norwegian buildings.
(Journal article; Peer reviewed, 2014)The paper refers to the development of a continuous time mathematical heating model for a building unit based on the rst principles. The model is described in terms of the state space variables, and a lumped parameter ...