Browsing Publikasjoner fra CRIStin - NTNU by Title
Now showing items 23733-23752 of 37325
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A numerical study of a size-dependent finite-element based unit cell with primary and secondary voids
(Peer reviewed; Journal article, 2021)Aluminium alloys contain various types of intermetallic particles with different sizes, such as constituent particles and dispersoids. The main mechanism of ductile fracture in these materials is assumed to be nucleation ... -
Numerical study of a well boat operating at a fish farm in current
(Journal article; Peer reviewed, 2019)Dynamic response of a well boat operating at a fish farm in current is investigated numerically. An objective is to determine the operational conditions of the well boat. In terms of the fish farm, a realistic set-up (with ... -
Numerical study of a well boat operating at a fish farm in long-crested irregular waves and current
(Journal article; Peer reviewed, 2019)The dynamic response of a coupled well boat–fish farm system in irregular long-crested waves and current is analyzed numerically in the time domain. The main purpose is to investigate the influence of the well boat on the ... -
Numerical study of bilge-keel effect on parametric roll and water on deck for an FPSO
(Chapter; Peer reviewed, 2015)This research activity represents the logical continuation of the work documented in [1] and [2] on water on deck and parametric roll for an FPSO in regular waves. Here the same numerical method, based on a domain-decomposition ... -
Numerical study of closed rigid fish cages in waves and comparison with experimental data
(Journal article; Peer reviewed, 2021)Closed fish cages have gained increased interest in marine aquaculture. However, knowledge on the seakeeping behaviour of a floating closed cage and the influence of the contained water inside the cage are still limited. ... -
Numerical study of discharge adjustment effects on reservoir morphodynamics and flushing efficiency: An outlook for the unazuki reservoir, Japan
(Journal article; Peer reviewed, 2021) -
Numerical study of ductile failure under non-proportional loading
(Journal article; Peer reviewed, 2019)This paper investigates two numerical methods for predicting the initiation of ductile failure under moderately and strongly non-proportional loading paths. Two distinct phenomena are considered as indicators for the ... -
Numerical study of fillet welds subjected to quasi-static and impact loading
(Journal article; Peer reviewed, 2017)Fillet welding is widely used in connections in civil engineering and marine structures. Thus, understanding the behavior of fillet welds under various types of loading is important, and numerical simulations can provide ... -
A Numerical Study of Flow Structures and Flame Shape Transition in Swirl-Stabilized Turbulent Premixed Flames Subject to Local Extinction
(Peer reviewed; Journal article, 2023)Large Eddy Simulations (LES) of turbulent lean-premixed flames of V and M-shape are presented. A simple algebraic closure with the ability to capture finite-rate chemistry effects is used for subgrid reaction rate modeling. ... -
Numerical Study of Hydrocarbon Charge Reduction Methods in HVAC Heat Exchangers
(Peer reviewed; Journal article, 2021)Required refrigerant charge in heat pump systems with propane is analyzed. Two systems are compared: The first a direct heat pump, with fin-and-tube heat exchangers, and the second an indirect system, with plate heat ... -
Numerical study of hydrogen influence on void growth at low triaxialities considering transient effects
(Peer reviewed; Journal article, 2019)Assuming that hydrogen enhances localised plasticity, as one of the leading mechanisms proposed in the lit- erature, the void growth and coalescence are modified by local softening and ductile failure features depend on ... -
Numerical Study of Hydrogen Inhibition of Char Gasification Using Detailed Hetero- and Homogeneous Chemical Kinetics
(Journal article; Peer reviewed, 2016)It has been known for a long time that hydrogen in the gas phase tends to inhibit gasification of char at low and intermediate temperatures. At higher temperatures, however, there are indications that hydrogen may speed ... -
Numerical study of ice-induced loads and responses of a monopile-type offshore wind turbine in parked and operating conditions
(Journal article; Peer reviewed, 2016)Offshore wind is an attractive source of renewable energy. In regions with cold climates, such as Canada, the Baltic Sea, and Bohai Bay, a good understanding of ice loads is essential to design a reliable and cost effective ... -
Numerical study of irregular breaking wave forces on a monopile for offshore wind turbines
(Journal article; Peer reviewed, 2016)Offshore wind turbine substructures consisting of cylindrical members are exposed to highly non-linear and breaking waves in shallow waters [1]. Those structures experience extreme impulsive loads of short duration from ... -
Numerical Study of Parametric Roll on a Fishing Vessel
(Chapter; Peer reviewed, 2013)Present research activity examines numerically the occurrence of parametric roll on a fishing vessel interacting with regular head-sea waves. The adopted solver is an efficient 3-D numerical Domain-Decomposition strategy ... -
A numerical study of separation and stagnation points for steady and unsteady flow over an elliptic cylinder near a moving wall
(Peer reviewed; Journal article, 2021)Flow separation around an elliptic cylinder with an aspect ratio of 0.4 near a moving wall is investigated numerically for Re 2 ½5; 150 with G=D 2 ½0:1; 2 (where G denotes the distance between the cylinder bottom and the ... -
Numerical study of the effect of cement defects on flexural-wave logging
(Journal article; Peer reviewed, 2019)Cement-bond evaluation is needed for new wells and plug and abandonment activities. The ultrasonic leaky Lamb-wave (also called the flexural-wave) technique, in combination with the pulse-echo technique, has been widely ... -
A Numerical Study of the Hydrodynamics of an Offshore Fish Farm Using REEF3D
(Chapter, 2021)In this paper, the CFD framework REEF3D is utilized to investigate the hydrodynamics of a large offshore fish farm in waves. The solver consists of a rigid body dynamics solver for the frame structure coupled to a fluid ... -
Numerical Study of the Interaction between Level Ice and Wind Turbine Tower for Estimation of Ice Crushing Loads on Structure
(Journal article; Peer reviewed, 2019)In this paper, the interaction between level ice and wind turbine tower is simulated by the explicit nonlinear code LS-DYNA. The isotropic elasto-plastic material model is used for the level ice, in which ice crushing ... -
A numerical study of variational discretizations of the Camassa–Holm equation
(Peer reviewed; Journal article, 2021)We present two semidiscretizations of the Camassa–Holm equation in periodic domains based on variational formulations and energy conservation. The first is a periodic version of an existing conservative multipeakon method ...