Institutt for bygg- og miljøteknikk: Recent submissions
Now showing items 1121-1140 of 4709
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The numerical simulation of different power plants by multi-criteria assessment methods for optimizing the efficiency and load demand in order to future use purposes
(Master thesis, 2022)The energy assurance and supply of electricity are significant factors for outspread and progress of all countries around the world. Low investment costs and emission besides high output efficiency of power plants are ... -
Gap between simplified and detailed calculation of the environmental impacts of road mixtures
(Journal article; Peer reviewed, 2021)In order to reach the COP21 objectives, solutions with low carbon contents must be used in road projects. However, the identification of the best materials to be implemented in the wearing course of roads is a daily problem ... -
Focused Plunging Breaking Waves Impact on Pile Group in Finite Water Depth
(Peer reviewed; Journal article, 2022)Accuracy estimation of wave loading on cylinders in a pile group under different impact scenarios is essential for both the structural safety and cost of coastal and offshore structures. Differing from the interaction of ... -
Focused Plunging Breaking Waves Impact on Cylinder Group in Deep Water
(Chapter, 2021)The correct estimation of wave loading on a cylinder in a cylinder group under different impact scenarios is essential to determine the structural safety of coastal and offshore structures. This scenario differs from the ... -
REEF3D Wave Generation Interface for Commercial Computational Fluid Dynamics Codes
(Peer reviewed; Journal article, 2021)In recent years, computational fluid dynamics (CFD) developments have shown a trend to combine Reynolds-averaged Navier–Stokes (RANS) CFD simulation with other methods such as wave theories or velocity potential-based ... -
Effect of Strength Anisotropy on the Stability of Natural Slopes
(Journal article; Peer reviewed, 2021)It is well known that low plasticity soft clays have large variations in undrained shear strength with the direction of loading. Laboratory experiments show typically a cross anisotropic behavior, where the undrained shear ... -
Efficient Calculation of Spatial and Temporal Evolution of Hydrodynamic Loads on Offshore Wind Substructures
(Chapter, 2021)Estimation of the hydrodynamic loads based on strip theory with the Morrison equation provides a fast and inexpensive method for load estimation for the offshore industry. The advantage of this approach is that it requires ... -
A Performance Assessment of Polarimetric GNSS-R Sea Level Monitoring in the Presence of Sea Surface Roughness
(Peer reviewed; Journal article, 2021)Monitoring coastal sea level has gained a large socioeconomic and environmental significance. Ground-based Global Navigation Satellite System Reflectometry (GNSS-R) offers various geophysical parameters including sea surface ... -
Validation of a Numerical Model for the Investigation of Tension Leg Platforms With Marine Energy Application Using REEF3D
(Chapter, 2021)Exploiting the offshore wind resources using floating offshore wind systems at sites with deep water depths requires advanced knowledge of the system behaviour, including the hydro-, areo-, and mooring dynamics. To that ... -
Polarimetric GNSS-R Sea Level Monitoring using I/Q Interference Patterns at Different Antenna Configurations and Carrier Frequencies
(Peer reviewed; Journal article, 2021)Coastal sea level variation as an indicator of climate change is extremely important due to its large socioeconomic and environmental impacts. The ground-based global navigation satellite system (GNSS)-reflectometry (GNSS-R) ... -
Remote Sensing of Precipitation Using Reflected GNSS Signals: Response Analysis of Polarimetric Observations
(Journal article; Peer reviewed, 2021)For the first time, rain effects on the polarimetric observations of the global navigation satellite system reflectometry (GNSS-R) are investigated. The physical feasibility of tracking the modifications in the surface ... -
Beyond equilibrium: Re-evaluating physical modelling of fluvial systems to represent climate changes
(Journal article; Peer reviewed, 2018)The interactions between water, sediment and biology in fluvial systems are complex and driven by multiple forcing mechanisms across a range of spatial and temporal scales. In a changing climate, some meteorological drivers ... -
Effects of Power Take-Off Damping and Model Scaling on the Hydrodynamic Performance of Oscillating Water Column Device
(Chapter, 2019)A systematic numerical investigation on the hydrodynamic performance of an oscillating water column (OWC) system for different damping values from the power take-off (PTO) device and at different model scales has been ... -
Calcium bentonite and sodium bentonite as stabilizers for roads unbound
(Peer reviewed; Journal article, 2021)Several technologies are currently available to stabilize the unbound layers of road pavements. The use of these solutions, often manufactured by means of chemical processes, is steadily increasing worldwide. As an alternative ... -
Effects of long-term leakage of shield lining on tunnelling-induced ground consolidation movements
(Peer reviewed; Journal article, 2021)Limited mathematical analytical studies for tunnel leakage-induced surface and subsurface soil movements and tunnel responses incorporated the distribution of excess pore water pressure, in which the concrete lining was ... -
Modelling hydraulic conductivity for porous building materials based on a prediction of capillary conductivity at capillary saturation
(Peer reviewed; Journal article, 2021)Liquid moisture transport plays a key role in performance of many building assemblies. For hygrothermal simulation models, used to assess such assemblies, it is important to include realistic liquid transport properties ... -
Microstructure evolution of young sea ice from a Svalbard fjord using micro-CT analysis
(Peer reviewed; Journal article, 2021)We analysed the three-dimensional microstructure of sea ice by means of X-ray-micro computed tomography. Microscopic (brine- and air- pore sizes, numbers and connectivity) and macroscopic (salinity, density, porosity) ... -
Mixed Method for Isogeometric Analysis of Coupled Flow and Deformation in Poroelastic Media
(Peer reviewed; Journal article, 2022)Pressure oscillations at small time steps have been known to be an issue in poroelasticity simulations. A review of proposed approaches to overcome this problem is presented. Critical time steps are specified to alleviate ... -
Evaluating the structure from motion technique for measurement of bed morphology in physical model studies
(Peer reviewed; Journal article, 2021)The selection of instrumentation for data acquisition in physical model studies depends on type and resolution of data to be recorded, time frame of the model study, available instrumentation alternatives, availability of ... -
A CFD Approach for Modelling the Fluid-Structure Interaction of Offshore Aquaculture Cages and Waves
(Chapter, 2021)Open ocean aquaculture cages became recently a promising alternative to traditional fish cage designs. The offshore environment implies larger loads on the structures and higher risk of fish loss. Floating rigid aquaculture ...