Browsing Publikasjoner fra CRIStin - NTNU by Title
Now showing items 14160-14179 of 38679
-
Flow equivalence and orbit equivalence for shifts of finite type and isomorphism of their groupoids
(Journal article; Peer reviewed, 2018)We give conditions for when continuous orbit equivalence of one-sided shift spaces implies flow equivalence of the associated two-sided shift spaces. Using groupoid techniques, we prove that this is always the case for ... -
Flow field and performance of a vertical-axis wind turbine on model buildings
(Journal article, 2022)The placement of a scaled-down Savonius (drag) vertical-axis wind turbine on model buildings is analysed experimentally by the use of turbine performance and flow field measurements in a wind tunnel. The set-up consists ... -
Flow Field Patterns for Proton Exchange Membrane (PEM) Fuel Cells
(Journal article; Peer reviewed, 2020)Flow field designs for the bipolar plates of the proton exchange membrane fuel cell are reviewed; including the serpentine, parallel, interdigitated, mesh type or their mixtures, furthermore 2D circular and 3D tubular ... -
The flow in the induction and entrance regions of lab-scale wind farms
(Peer reviewed; Journal article, 2023)With the increasing demand for wind energy, it is important to be able to understand and predict the available wind resources. To that end, the present wind tunnel study addresses the flow in the induction and entrance ... -
Flow Measurements Derived from Camera Footage Using an Open-Source Ecosystem
(Peer reviewed; Journal article, 2022)Sensors used for wastewater flow measurements need to be robust and are, consequently, expensive pieces of hardware that must be maintained regularly to function correctly in the hazardous environment of sewers. Remote ... -
Flow of non-Newtonian fluids in single fractures and fracture networks: Current status, challenges, and knowledge gaps
(Peer reviewed; Journal article, 2023)Flow of non-Newtonian fluids in rock fractures is ubiquitous in engineering practice and involves e.g. cement flow in tunnel grouting, drilling fluid flow when a fracture is met during drilling, and flow of fracturing ... -
Flow over a single shallow dimple
(Peer reviewed; Journal article, 2024) -
Flow pattern transitions in and hysteresis effects of falling film flow over horizontal tubes related to LNG heat exchangers
(Journal article; Peer reviewed, 2015)Spiral wound heat exchangers with horizontal tube configurations are used extensively in the chemical, refrigeration, petroleum and food industry, and are core components in many natural gas liquefaction plants. For improved ... -
Flow patterns in a steady lid-driven rectangular cavity with an embedded circular cylinder
(Peer reviewed; Journal article, 2020)A detailed investigation of the flow in a steady lid-driven cavity of depth to width ratio 1:2 containing a circular cylinder is provided. Three different Reynolds numbers (based on the lid velocity and cavity depth) of ... -
Flow Structure around a Multicopter Drone: A Computational Fluid Dynamics Analysis for Sensor Placement Considerations
(Peer reviewed; Journal article, 2023)This study presents a computational fluid dynamics (CFD) based approach to determine the optimal positioning for an atmospheric turbulence sensor on a rotary-wing uncrewed aerial vehicle (UAV) with X8 configuration. The ... -
Flow topology in the gap and wake of convex curved tandem cylinders
(Journal article; Peer reviewed, 2023)Flow around curved tandem cylinders in the convex configuration has been studied by means of direct numerical simulations, for a Reynolds number of 500 and a nominal gap ratio of 3.0. Spanwise variation of flow regimes, ... -
Flow-Area Relations in Immiscible Two-Phase Flow in Porous Media
(Journal article; Peer reviewed, 2020)We present a theoretical framework for immiscible incompressible two-phase flow in homogeneous porous media that connects the distribution of local fluid velocities to the average seepage velocities. By dividing the pore ... -
A flow-through imaging system for automated measurement of ichthyoplankton
(Peer reviewed; Journal article, 2022)Microscopic imaging and morphometric measurement of fish embryos and larvae is essential in environmental monitoring of fish populations and to evaluate larvae development in aquaculture. Traditional microscopy methods ... -
FlowCyl: one-parameter cement paste rheology test developed at NTNU, Norway
(Journal article, 2019)The FlowCyl is a simple flow viscometer – a modification of the Marsh Cone test apparatus developed to characterize cement pastes and grouts. The FlowCyl gives a one-parameter characterisation of rheology called the flow ... -
Flowering time adaption in Swedish landrace pea (Pisum sativum L.)
(Peer reviewed; Journal article, 2016)Background Cultivated crops have repeatedly faced new climatic conditions while spreading from their site of origin. In Sweden, at the northernmost fringe of Europe, extreme conditions with temperature-limited growth ... -
Fluctuation-Dissipation Theorems for Multiphase Flow in Porous Media
(Peer reviewed; Journal article, 2022)A thermodynamic description of porous media must handle the size- and shape-dependence of media properties, in particular on the nano-scale. Such dependencies are typically due to the presence of immiscible phases, contact ... -
Fluctuations of sensorimotor processing in migraine: A controlled longitudinal study of beta event related desynchronization
(Journal article; Peer reviewed, 2019)Background The migraine brain seems to undergo cyclic fluctuations of sensory processing. For instance, during the preictal phase, migraineurs experience symptoms and signs of altered pain perception as well as other ... -
Fluid diffusion in cracked composite laminates – Analytical, numerical and experimental study
(Journal article; Peer reviewed, 2018)Composite structural components are often subjected to service loads that cause cracks in off-axis layers, without compromising the load bearing capability of the structure. In marine or humid environments fluid ingress ... -
Fluid Displacement in a 2D DFN Fracture: Time Integration of the Interface Position
(Journal article; Peer reviewed, 2021) -
Fluid Flow and Leakage Assessment Through an Unlined/Shotcrete Lined Pressure Tunnel: A Case from Nepal Himalaya
(Peer reviewed; Journal article, 2021)The use of unlined/shotcrete lined pressure tunnels and shafts are cost-efective solutions for a hydropower project and are being implemented worldwide. To implement this concept, the ground conditions at the area of concern ...