Browsing NTNU Open by Title
Now showing items 65243-65262 of 101754
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Numerical investigation of scour beneath pipelines subjected to an oscillatory flow condition
(Peer reviewed; Journal article, 2021)The present study carries out two-dimensional numerical simulations to investigate scour beneath a single pipeline and piggyback pipelines subjected to an oscillatory flow condition at a Keulegan–Carpenter (KC) number of ... -
Numerical Investigation of Ship's Continuous-Mode Icebreaking in Level Ice
(Doctoral Theses at NTNU, 1503-8181; 2014:132, Doctoral thesis, 2014)This thesis is a summary of studies that were carried out as part of candidacy for aPhD degree. The purpose of these studies was to evaluate some factors in shipdesign that are intended for navigating in ice using numerical ... -
Numerical Investigation of Ship's Continuous-Mode Icebreaking in Level Ice
(Doctoral Theses at NTNU, 1503-8181; 2014:132, Doctoral thesis, 2014)This thesis is a summary of studies that were carried out as part of candidacy for aPhD degree. The purpose of these studies was to evaluate some factors in shipdesign that are intended for navigating in ice using numerical ... -
Numerical Investigation of Sloshing under Roll Excitation at Shallow Liquid Depths and the Effect of Baffles
(Peer reviewed; Journal article, 2021)Sloshing is relevant in several applications like ship tanks, space and automotive industry and seiching in harbours. Due to the relationship between ship and sloshing motions and possibility of structural damage, it is ... -
Numerical Investigation of Strength Mismatch Effect on Ductile Crack Growth Resistance in Welding Pipe
(Peer reviewed; Journal article, 2020)The effect of strength mismatch (ratio between the yield stress of weld metal and base metal, My) on the ductile crack growth resistance of welding pipe was numerically analyzed. The ductile fracture behavior of welding ... -
Numerical Investigation of the Collision Damage and Residual Strength of a Floating Bridge Girder
(Chapter, 2018)For bridges across wide and deep waterways, fixed foundation structures are not possible to be built due to technical restrictions. Alternatively, pontoon supported floating bridges which do not require fixed foundations ... -
Numerical Investigation of the Effect of Flow Turbulence on Heterogeneous Reaction Rates
(Doctoral theses at NTNU;2017:116, Doctoral thesis, 2017)In this thesis, the effect of turbulence on heterogeneous reactions is investigated. After a short introduction into the state-of-the-art of turbulent combustion modelling, an overview over the numerical methods and models ... -
Numerical investigation of the effet of leakage flow through erosion-induced clearance gaps of guide vanes on the performance of Francis turbines
(Journal article; Peer reviewed, 2018)Abrasive wear in the clearance gap of guide vanes (GVs) increases the gap size, which deteriorates the flow and causes loss of efficiency. This paper investigates the performance of a Francis turbine including erosion-induced ... -
Numerical Investigation of the Hemodynamics in the Human Fetal Umbilical Vein/ Ductus Venosus Bifurcation
(Master thesis, 2012)The transport of oxygenated blood from the placenta to the human fetus has received great attention in clinical Doppler velocimetry studies, especially the ductus venosus. The ductus venosus is connecting the intra abdominal ... -
Numerical Investigation of the Pressure Drop Characteristics of Isothermal Ice Slurry Flow under Variable Ice Particle Diameter
(Peer reviewed; Journal article, 2020)Ice slurry is an advanced secondary refrigerant that has been attracting considerable attention for the past decade due to the growing concerns regarding energy shortage and environmental protection. To stimulate the ... -
Numerical investigation of thermal and hydraulic characteristics of sCO2-water printed circuit heat exchangers with zigzag channels
(Peer reviewed; Journal article, 2020)Since the precooler and the recuperator are the largest components of a supercritical carbon dioxide Brayton cycle, their design can substantially affect the performance and size of the whole system. Although the design ... -
Numerical investigation of thermal-hydraulics performance of fin-tube waste heat recovery units
(Master thesis, 2015)The objective of this master thesis is to increase the understanding of fluid flow and heat transfer development across a finned tube heat exchanger with help of Computational Fluid Dynamics (CFD). Three different geometries ... -
Numerical investigation of tip leakage vortex
(Master thesis, 2017)The Kaplan turbine has a small clearance gap between the blade tip and casing to allow the blades to rotate freely. This clearance gap is the cause of an undesirable Tip Leakage Vortex (TLV). A TLV might reduce the turbine ... -
Numerical investigation of turbulence in a skewed three dimensional channel flow
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:179, Doctoral thesis, 2009)The present doctoral thesis concerns fluid flow in three-dimensional turbulent boundary layers. In such flows, both the direction and the magnitude of the mean flow vary with wall distance. A statistically stationary ... -
Numerical Investigation of turbulent Flow in a Channel with rough Walls
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:148, Doctoral thesis, 2004)Direct numerical simulation has been performed in order to study ressure-driven turbulent flow in a rod-roughened channel at Reynolds number Reτ = 400 (based on the mean pressure gradient). Square rods were attached to ... -
Numerical Investigation of Viscous Flow Around Two Tandem Circular Cylinders Ending on a Flat Plate
(Master thesis, 2018)Flow around cylindrical shapes are frequently seen both within the academics and for applications in ocean and marine engineering. Viscous flow around tandem cylinders fixed to a vertical wall is numerically simulated for ... -
Numerical Investigation of Wave-Body Interactions in Shallow Water
(Chapter; Peer reviewed, 2014)Present investigation is based on a numerical study using a time-domain Rankine panel method. The effort and novelty is to extend the applicability of the solver to shallower waters and to steeper waves by including ... -
Numerical Investigation of Wave-Body Interactions in Shallow Water
(Master thesis, 2013)DNV has Wasim (a module of HydroD) as a Rankine panel method potential flow solver originally developed for more concern to deep water analysis. Some attempts have been made to extend the capability of the program in shallow ... -
Numerical investigation on scour around a cylinder and stabilities of scour protections
(Master thesis, 2022)En tredimensjonal numerisk modell brukes til å undersøke lokal erosjon rundt en sylinder i en rektangulær kanal under strøm. Numerisk modellering av erosjon rundt en sylinder er utfordrende fordi beregningene krever at man ... -
Numerical investigation on the compressive behaviors of Islamic geometric patterns inspired architectured material
(Master thesis, 2023)De bemerkelsesverdige mekaniske ytelsene til arkitektonerte materialer—komponert av nøye designet byggeklosser - har mottatt økende interesser fra vitenskap og ingeniørfag samfunnet de siste tiårene. Blant arkitektoniske ...