Browsing SINTEF Industri by Title
Now showing items 1505-1524 of 1542
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Validation of QCL CF4 Gas Analyzer for Sensitivity and Selectivity
(The Minerals, Metals & Materials Series;2367-1181, Peer reviewed; Journal article, 2020)Quantum cascade lasers (QCL) has open the mid-infrared (mid-IR) spectral range for laser gas monitors. For perfluorocarbon gases (PFCs) such as CF4, continuous emission monitors are now commercially available. Since these ... -
Vapor–liquid equilibria data for 2-piperidineethanol and 1-(2-hydroxyethyl)pyrrolidine in aqueous solutions and a UNIQUAC model representation
(Peer reviewed; Journal article, 2022)This work reports equilibrium data for two amines, 2-piperidineethanol (2-PPE) and 1-(2-hydroxyethyl)pyrrolidine (1-(2HE)PRLD), and their aqueous solutions. The pressure, temperature, and composition data are used to ... -
Variability in the formation and framework polymorphism of metal-organic frameworks based on yttrium(III) and the bifunctional organic linker 2,5-dihydroxyterephthalic acid
(Peer reviewed; Journal article, 2020)Depending on the solvothermal reaction conditions, we obtained three different metal‐organic frameworks with yttrium(III) as metal component and 2,5‐dihdyroxyterepthalic acid (H4dhtp) as bifunctional organic linker: ... -
Vehicle Routing with Space- and Time-Correlated Stochastic Travel Times: Evaluating the Objective Function
(Peer reviewed; Journal article, 2019)We study how to model and handle correlated travel times in two-stage stochastic vehicle-routing problems. We allow these travel times to be correlated in time and space; that is, the travel time on one link in one period ... -
Velocity dispersion in rocks: A laboratory technique for direct measurement of P-wave modulus at seismic frequencies
(Peer reviewed; Journal article, 2019)Fluid saturated rocks exhibit a dependence of acoustic velocities on frequency, which is called velocity dispersion. For some rocks, e.g., shales, velocity dispersion is rather strong and has to be taken into account when ... -
Velocity profiles in a 2D model of the left ventricular outflow tract, pathological case study using PIV and CFD modeling
(SINTEF proceedings;2387-4295, Chapter; Peer reviewed, 2017)In the current study, we present an experimental (in vitro) 2D flow model for studying blood flow in the human left ventricular outflow tract (LVOT) and the first part of the aorta using particle image velocimetry (PIV) ... -
Verification of filtered two fluid models for reactive gas‐solid flows
(SINTEF Proceedings;2, Chapter; Peer reviewed, 2017)CFD simulations of fluidized bed reactors are generally limited to the laboratory scale because of the fine grid sizes that are required to resolve complex particle clustering phenomena. The filtered Two Fluid Model (fTFM) ... -
Verification of heat and mass transfer closures in industrial scale packed bed reactor simulations
(Journal article; Peer reviewed, 2018)Particle-resolved direct numerical simulation (PR-DNS) is known to provide an accurate detailed insight into the local flow phenomena in static particle arrays. Most PR-DNS studies in literature do not account for reactions ... -
Vertical GaN nanocolumns grown on graphene intermediated with a thin AlN buffer layer
(Peer reviewed; Journal article, 2018)We report on the self-assembled growth of high-density and vertically-oriented n-doped GaN nanocolumns on graphene by radio-frequency plasma-assisted molecular beam epitaxy. Graphene was transferred to silica glass, which ... -
Virtual modelling and testing of the single and ontra-rotating co-axial propeller
(Peer reviewed; Journal article, 2020)Propellers are a vital component to achieve successful and reliable operation of drones. However, the drone developer faces many challenges while selecting a propeller and a common approach is to perform static thrust ... -
Viscosity Models for Drilling Fluids: Herschel-Bulkley Parameters and Their Use
(Peer reviewed; Journal article, 2020)An evaluation is presented of the practical usage of the Herschel-Bulkley viscosity model for drilling fluids. If data from automatic viscosity measurements exist, the parameters should be selected from relevant shear rate ... -
VLES turbulence model for an Eulerian–Lagrangian modeling concept for bubble plumes
(Peer reviewed; Journal article, 2017)Traditional Reynolds-averaged Navier–Stokes (RANS) approaches to turbulence modeling, such as the k-ϵ model, have some well-known shortcomings when modeling transient flow phenomena. To mitigate this, a filtered URANS model ... -
Volumetric strain measurement of polymeric materials subjected to uniaxial tension
(Peer reviewed; Journal article, 2019)A novel method for measuring and calculating volumetric strain in circular cylindrical uniaxial tension samples made from polymeric materials is proposed. It is shown that special considerations must be taken when calculating ... -
Vurdering av mikrobiologiske analysemetoder for å dokumentere mikrobiell barriereeffekt i partikkelfjerningstrinnet på vannbehandlingsanlegg
(NIVA-rapport;, Research report, 2020)Det er gjennomført innledende tester med flowcytometri og DNA-baserte metoder for å kartlegge om slike metoder er bedre egnet til in-situ målinger og vurderinger av vannbehandlingsanleggs hygieniske barrierer enn de metodene ... -
Wastewater-aged silver nanoparticles in single and combined exposures with titanium dioxide affect the early development of the marine copepod Tisbe battagliai
(Peer reviewed; Journal article, 2020)In this study, the effects of aged Ag and TiO2 NPs, individually and as a mixture, in wastewater relative to their pristine counterparts on the development of the copepod nauplii (Tisbe battagliai) were investigated. NP ... -
Water as key to activity and selectivity in Co Fischer-Tropsch synthesis: γ-alumina based structure-performance relationships
(Peer reviewed; Journal article, 2018)Thirteen γ-alumina supports with different pore sizes and pore size distributions have been impregnated with cobalt and rhenium. The catalysts were tested for Fischer-Tropsch synthesis (FTS) under dry and enhanced water ... -
Water Vapour Promotes CO2 Transport in Poly(ionic liquid)/Ionic Liquid-Based Thin-Film Composite Membranes Containing Zinc Salt for Flue Gas Treatment
(Peer reviewed; Journal article, 2020)A poly(ionic-liquid) (PIL) matrix can be altered by incorporating additives that will disrupt the polymer chain packing, such as an ionic liquid (IL) and inorganic salts to boost their exploitation as materials for membrane ... -
Water–Gas Shift Activity of Pt Catalysts Prepared by Different Methods
(Peer reviewed; Journal article, 2020)Platinum supported on ceria and zirconia was prepared through different preparation methods: Coprecipitation (CP), spray drying (SD), and flame spray pyrolysis (FSP). The catalysts were characterized by XRD, TPR, N2 ... -
Weakening of Compressive Strength of Granite by Piezoelectric Actuation of Quartz Using High-Frequency and High-Voltage Alternating Current: A 3D Numerical Study
(Peer reviewed; Journal article, 2023)Piezoelectric excitation of quartz mineral phase in granite using high-frequency and high-voltage alternating current (HF-HV-AC) is a potential new weakening pretreatment in comminution of rock. The present study addresses ... -
Weakening of tensile strength of granitic rock by HV-HF-AC actuation of piezoelectric properties of Quartz: a 3D numerical study
(Peer reviewed; Journal article, 2023)High-voltage and high-frequency alternating current (HV-HF-AC) excitation of piezoelectric properties of Quartz is a potential method to induce cracks in granite. This was recently shown in a numerical feasibility study ...