Blar i NTNU Open på tittel
Viser treff 23248-23267 av 100934
-
Direct numerical simulation of spray droplet evaporation in hot turbulent channel flow
(Peer reviewed; Journal article, 2020)We perform a direct numerical simulation (DNS) of 14081 “cold” spherical droplets evaporating in a “hot” fully-developed turbulent channel flow. This effort is the first extensive computation that employs four-way coupling ... -
Direct Numerical Simulation of the Flow Past a Curved Circular Cylinder
(Master thesis, 2010)Offshore marine applications often include configurations of cylindrical structures that produce complex three-dimensional flow features. Catenary risers, for instance, can create complex flow patterns when subjected to ... -
Direct Numerical Simulation of Turbulent Channel Flow
(Master thesis, 2018)Several Direct Numerical Simulations (DNS) of a fully developed turbulent channel flow are performed. The aim of this thesis is to analyze how grid resolutions and domain sizes affect the turbulence statistics. The simulations ... -
Direct Numerical Simulation Of Turbulent Combustion Near Solid Surfaces
(Doktoravhandlinger ved NTNU, 1503-8181; 2006:14, Doctoral thesis, 2006)This study uses Direct Numerical Simulation of turbulent reacting compressible plane channel flow at low Reynolds number in order to understand the physics of the interaction of a flame with the turbulent boundary layer ... -
Direct numerical simulation of turbulent flow in a channel with transverse ribs
(Master thesis, 2015)Surface roughness is of great relevance in most engineering applications, as very few surfaces can be regarded as perfectly smooth. Investigation of the effects on the mean flow, as well as the near wall turbulence is ... -
Direct Numerical Simulation of turbulent wakes behind different plate configurations
(Doctoral theses at NTNU;2017:123, Doctoral thesis, 2017)The physics of complex three-dimensional wake behind multiple flat plates is studied by means of direct numerical simulations (DNS). The interaction and interference effects between the wakes behind two configurations of ... -
Direct numerical simulations of premixed and stratified flame propagation in turbulent channel flow
(Journal article; Peer reviewed, 2018)Direct numerical simulations are performed to investigate the transient upstream flame propagation (flashback) through homogeneous and fuel-stratified hydrogen-air mixtures transported in fully developed turbulent channel ... -
Direct observation of ferroelectric field effect and vacancy-controlled screening at the BiFeO3/LaxSr1−xMnO3 interface
(Journal article, 2014)The development of interface-based magnetoelectric devices necessitates an understanding of polarization-mediated electronic phenomena and atomistic polarization screening mechanisms. In this work, the LSMO/BFO interface ... -
Direct observation of temperature dependent vortex dynamics in a La0.7Sr0.3MnO3 micromagnet
(Peer reviewed; Journal article, 2020)Although it is well documented that the vortex core in a micromagnet can switch polarization in response to magnetic field pulses, the temperature dependence of this process has not yet been addressed by experiments. Using ... -
Direct predictive control of a first-order quasilinear hyperbolic PDE
(Journal article; Peer reviewed, 2019)We present a method for the boundary controlof a system governed by one hyperbolic PDE with a non-localcoupling term by state feedback. The method is an extensionof recently developed controllers for semilinear systems. ... -
Direct Production of Aluminum Manganese and Silicon Alloys in Aluminum Reduction Cells: A Laboratory Test
(Journal article, 2022)Aluminum smelters produce pure aluminum in reduction cells by the Hall-Héroult process but supply a variety of alloys to their customers. The alloys are produced in the cast house, as master alloys containing the desired ... -
Direct Production of Aluminum Titanium Alloys in Aluminum Reduction Cells: A Laboratory Test.
(Journal article, 2022)Aluminum smelters produce pure aluminum in reduction cells by the Hall-Héroult process, however, aluminum is usually supplied as a variety of alloys to their customers. The alloys are produced in the casthouse, as desired ... -
Direct repair of alkylation damage in DNA and RNA by 2-oxoglutarate- and iron-dependent dioxygenases
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:232, Doctoral thesis, 2008)Direkte reparasjon av alkyleringsskader i DNA og RNA av 2-oksoglutarat- og jernavhengige dioksygenaser All informasjon nødvendig for at en levende organisme skal utvikle seg og fungere er lagret i organismens arvestoff, ... -
Direct Simulation of Surge Tank Stability
(Master thesis, 2018)This thesis deals with the issue of surge tank stability in hydropower plants, investigating methods used to design the surge tank area required to guarantee stability. Currently, Thoma equation (1910) is widely accepted ... -
Direct Synthesis of Dimethyl Ether in Microstructured Reactors
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:81, Doctoral thesis, 2011) -
Direct Synthesis of Dimethyl Ether in Microstructured Reactors: The Interactions Between Methanol Synthesis and Methanol Dehydration
(Doctoral thesis at NTNU;2016:179, Doctoral thesis, 2016)The growing concerns about the climate change, energy security and the diminishing oil reserves, stimulate the search for alternative energy sources and non-petroleum-based fuels. Natural gas in the short-term, and biomass ... -
The direct topographical correction in gravimetric geoid determination by the Stokes-Helmert method
(Peer reviewed; Journal article, 2000)The direct topographical correction is composed of both local effects and long-wavelength contributions. This implies that the classical integral formula for determining the direct effect may have some numerical problems ... -
Direct training of robots using a positional deviation sensor
(Doktor ingeniøravhandling;1988:33, Doctoral thesis, 1988)A device and system for physically guiding a manipulator through its task is described. The device consists of inductive, contact-free positional deviation sensors, enabling the rcbot to track a motion marker. Factors ... -
Direct Visual Odometry on a GPU
(Master thesis, 2019)Denne masteroppgaven dekker implementasjonen av DVO (Direct Visual Odometry) algoritmen på en GPGPU (General-purpose Graphical Processing Unit). DVO er en direkte visuell odometri algoritme som er i stand til å estimere ... -
Direct Yaw Moment, Traction and Power Limit Control of a Four Wheel Independent Drive Electric (4WID-EV) Formula Student Race Car
(Master thesis, 2016)This master's thesis describes the development, implementation and testing of a suite of control systems consisting of torque vectoring, traction control and power limit control for a Formula style race car using four ...