Blar i Fakultet for ingeniørvitenskap (IV) på dokumenttype "Journal article"
Viser treff 61-80 av 7530
-
A consistent reduction of the two-layer shallow-water equations to an accurate one-layer spreading model
(Journal article; Peer reviewed, 2019)The gravity-driven spreading of one fluid in contact with another fluid is of key importance to a range of topics. These phenomena are commonly described by the two-layer shallow-water equations (SWE). When one layer is ... -
A cost-effective approach to predict dynamic variation of mesohabitats at the river scale in Norwegian systems
(Journal article; Peer reviewed, 2014)This paper presents a cost-effective approach to predict dynamic variation of mesohabitat classes or hydromorphological units (HMUs) in the context of a peaking scenario. Predicting dynamic mesohabitats has been a challenge ... -
A coupled diffusion and cohesive zone modelling approach for numerically assessing hydrogen embrittlement of steel structures
(Journal article; Peer reviewed, 2017)Simulation of hydrogen embrittlement requires a coupled approach; on one side, the models describing hydrogen transport must account for local mechanical fields, while on the other side, the effect of hydrogen on the ... -
A coupled modeling of design and investment parameters for optimal operation of methane bioreactors: Attainable region concept approach
(Journal article; Peer reviewed, 2020)Current practice to design methane bioreactors does not consider all degrees of freedom simultaneously, which raises question of global optimality. This study presents a model-based design framework, which simultaneously ... -
A Crane Overload Protection Controller for Blade Lifting Operation Based on Model Predictive Control
(Journal article; Peer reviewed, 2019)Lifting is a frequently used offshore operation. In this paper, a nonlinear model predictive control (NMPC) scheme is proposed to overcome the sudden peak tension and snap loads in the lifting wires caused by lifting speed ... -
A Curvature-Based Descriptor for Point Cloud Alignment Using Conformal Geometric Algebra
(Journal article; Peer reviewed, 2018)This paper presents a descriptor for course alignment of point clouds using conformal geometric algebra. The method is based on selecting keypoints depending on shape factors to identify distinct features of the object ... -
A data-driven approach to improve control room operators' response
(Peer reviewed; Journal article, 2021) -
A data-driven method based on deep belief networks for backlash error prediction in machining centers
(Journal article; Peer reviewed, 2017)Backlash error occurs in a machining center may lead to a series of changes in the geometry of the components and subsequently deteriorate the overall performance of the equipment. Due to the uncertainty of mechanical wear ... -
A dataset of wind-driven rain measurements on a low-rise test building in Norway
(Journal article; Peer reviewed, 2007)Semi-empirical models and especially numerical simulation models based on Computational Fluid Dynamics (CFD) are increasingly being used to calculate wind-driven rain (WDR) on building facades. The development, verification ... -
A DBN-based risk assessment model for prediction and diagnosis of offshore drilling incidents
(Journal article; Peer reviewed, 2016)Drilling operations of offshore oil and gas fields are characterized by high technical complexity, high risks, and high costs, since they are always in harsh environments with complicated geological factors. Lost circulation ... -
A DBN-based risk assessment model for prediction and diagnosis of offshore drilling incidents
(Journal article, 2016)Drilling operations of offshore oil and gas fields are characterized by high technical complexity, high risks, and high costs, since they are always in harsh environments with complicated geological factors. Lost circulation ... -
A deep learning approach for anomaly detection based on SAE and LSTM in mechanical equipment
(Journal article; Peer reviewed, 2019)Anomaly in mechanical systems may cause equipment to break down with serious safety, environment, and economic impact. Since many mechanical equipment usually operates under tough working environments, which makes them ... -
A density-dependent failure criterion for concrete
(Journal article, 2016)This work focuses on the large effect of small secondary stresses on the compressive strength of concrete. The strength and especially the ductility of structural concrete members depend on local triaxial stress conditions ... -
A depth semi-averaged model for coastal dynamics
(Journal article, 2017)The present work extends the semi-integrated method proposed by Antuono and Brocchini [“Beyond Boussinesq-type equations: Semi-integrated models for coastal dynamics,” Phys. Fluids 25(1), 016603 (2013)], which comprises a ... -
A Detached-Eddy-Simulation study: Proper-Orthogonal-Decomposition of the wake flow behind a model wind turbine
(Journal article; Peer reviewed, 2018)In times of intense renewable energy development, the planning of wind farms and the improvement of their total efficiency has become a major field of research. A precise analysis of the velocity deficit, fluctuation load ... -
A diagram for capturing and predicting failure locations in notch geometries produced by additive manufacturing
(Journal article; Peer reviewed, 2020)In a recent work by the authors Solberg and Berto (2019), as-built notch geometries of Inconel 718 produced by selective laser melting was investigated under fatigue loading. One of the findings was that fatigue did not ... -
A discrete-modules-based frequency domain hydroelasticity method for floating structures in inhomogeneous sea conditions
(Journal article; Peer reviewed, 2017)Based on the three-dimensional (3D) potential theory and finite element method (FEM), this paper proposes a new numerical method for hydroelastic predictions of floating structures in inhomogeneous seabed and wave field ... -
A displacement-free formulation for the Timoshenko beam problem and a corresponding isogeometric collocation approach
(Journal article; Peer reviewed, 2017)We present a reformulation of the classical Timoshenko beam problem, resulting in a single differential equation with the rotation as the only primal variable. We show that this formulation is equivalent to the standard ... -
A distributed anti-collision decision support formulation in multi-ship encounter situations under COLREGs
(Journal article; Peer reviewed, 2015)A multi-ship anti-collision decision support formulation is studied in a distributed and real time way. Under the general requirements from COLREGs rules and regulations, the performance of course alteration and changing ... -
A domain-decomposition strategy for a compressible multi-phase flow interacting with a structure
(Journal article, 2014)The problem of a high-pressure gas cavity and its interaction with surrounding liquid and a close-by structure is examined numerically. Even though this is of interest in many practical applications, here, the focus is on ...