Institutt for energi og prosessteknikk
Recent Submissions
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Azimuthal flame response and symmetry breaking in a forced annular combustor
(Peer reviewed; Journal article, 2021)In the current study azimuthal forcing of an annular combustor with swirling flames has been performed to present for the first time the Heat Release Rate (HRR) response to all possible pressure fields of the first azimuthal ... -
Pump-Turbines in Conventional Hydropower Plants
(Peer reviewed; Journal article, 2021)This paper proposes an innovative approach to retrofit existing hydropower plants with suitable upper and lower reservoirs into pumped storage. The conventional methods are both comprehensive and expensive, mainly due to ... -
Local entropy generation and entropy fluxes of a transient flame during head-on quenching towards solid and hydrogen-permeable porous walls
(Peer reviewed; Journal article, 2021)Premixed H2-air flames are studied in a one-dimensional wall-bounded configuration. The laminar flame propagates towards and quenches at a wall that is either solid or permeable. Entropy generation by each of 19 elementary ... -
Curvature effects on NO formation in wrinkled laminar ammonia/hydrogen/nitrogen-air premixed flames
(Peer reviewed; Journal article, 2021)The formation of nitrogen oxide (NO) in wrinkled laminar NH3/H2/N2-air premixed flames is investigated utilizing two-dimensional Direct Numerical Simulation (DNS) with detailed chemical kinetics as well as one-dimensional ... -
A framework for the assessment of marine litter impacts in life cycle impact assessment
(Peer reviewed; Journal article, 2021)Purpose Marine litter, mostly plastics, is a growing environmental problem. Environmental decision makers are beginning to take actions and implement regulations that aim to reduce plastic use and waste mismanagement. ... -
Conical micro-structures for super-repellent surfaces and their effect on droplet impact
(Doctoral theses at NTNU;2021:235, Doctoral thesis, 2021)Surface wetting properties control is crucial to various applications, such as anti-wetting, self cleaning and heat transfer processes. Design of surface wetting properties can be achieved by mechanical and chemical methods. ... -
The dynamic nature of self-excited azimuthal modes in annular combustors
(Doctoral theses at NTNU;2021:209, Doctoral thesis, 2021) -
A pressurized Internally Circulating Reactor (ICR) for streamlining development of chemical looping technology
(Doctoral theses at NTNU;2021:223, Doctoral thesis, 2021)Carbon Capture, Utilization and Storage (CCUS) considered playing a major role in most mitigation scenarios to meet the ambitions of Paris agreement in limiting future temperature increases to 2°C. Chemical looping process ... -
Exploring possibilities to quantify the qualitative description of occupant behaviour
(Chapter, 2020)Human behaviour is a multidisciplinary subject that is being investigated by numerous scientists around the world. The ability to understand and forecast reactions can be beneficial for all scientific branches that are ... -
Building Retrofitting through Coupling of Building Energy Simulation-Optimization Tool with CFD and Daylight Programs
(Peer reviewed; Journal article, 2021)Simultaneous satisfaction of both thermal and visual comfort in buildings may be a challenging task. Therefore, this paper suggests a comprehensive framework for the building energy optimization process integrating ... -
Alignment and rotation of spheroids in unsteady vortex flow
(Peer reviewed; Journal article, 2021)Preferential orientations of inertialess nonspherical particles are examined through three qualitatively different stages of a time-evolving Taylor–Green vortex flow. Despite an unexpected decorrelation between the vorticity ... -
Advancements in environmentally extended multiregional input-output analysis: modeling drivers, pressures, and impacts
(Doctoral theses at NTNU;2021:210, Doctoral thesis, 2021)We increasingly need to rely on demand side changes to complement technological improvements to mitigate environmental impacts such as global warming and loss of biodiversity. To do so we must better understand how different ... -
Towards accurate state-of-charge (SoC) estimation in Lithium-ion batteries
(Peer reviewed; Journal article, 2021)Energy storage systems (ESSs) are critically important for the future of electric vehicles. Despite this, the safety and management of ESSs require improvement. Battery management systems (BMSs) are vital components in ESS ... -
Molecular Microbial Community Analysis as an Analysis Tool for Optimal Biogas Production
(Peer reviewed; Journal article, 2021)The microbial diversity in anaerobic digestion (AD) is important because it affects process robustness. High-throughput sequencing offers high-resolution data regarding the microbial diversity and robustness of biological ... -
Tracking and sizing of particles in the Mie scattering regime using a laser scanning technique
(Doctoral theses at NTNU;2020:219, Doctoral thesis, 2021) -
Building occupant transient agent-based model – Movement module
(Journal article; Peer reviewed, 2020)Simulation of occupant behaviour (OB) in buildings is a challenging task. Available software uses a broad spectrum of tools that try to reproduce the patterns of human activity. From building energy perspective, the main ... -
Computational fluid dynamics (CFD) modeling for biomass and wate to energy production
(Doctoral theses at NTNU;2021:177, Doctoral thesis, 2021)Solid fuel particles are usually modeled as point particles in simulations using the Eulerian-Lagrangian approach. The particles and gas phases can be resolved on vastly different scales. Since the particles are treated ... -
Identification of Existing Challenges and Future Trends for the Utilization of Ammonia-Water Absorption–Compression Heat Pumps at High Temperature Operation
(Peer reviewed; Journal article, 2021)Decarbonization of the industrial sector is one of the most important keys to reducing global warming. Energy demands and associated emissions in the industrial sector are continuously increasing. The utilization of high ... -
Experimental Measurement of Flame Describing Functions in an Azimuthally Forced Annular Combustor
(Doctoral theses at NTNU;2021:178, Doctoral thesis, 2021)Thermoacoustic instabilities have become an increasingly relevant issue in the search for lower emissions in gas turbines, both for power production and transportation. Adoption of alternative fuels in land based gas ... -
Impact of Carbon Price on Renewable Energy Using Power Market System
(Chapter, 2020)Reducing anthropogenic greenhouse gas emissions is a critical element to keep global warming below 2 °C. In terms of the IEA report, the largest sources of emission in 2016, which approaches to 42% of global total, is ...
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