Now showing items 1-10 of 171
Numerical Methods for Flows with Evolving Interfaces
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:12, Doctoral thesis, 2004)
The present thesis addressed two important aspects of Computational Hydrodynamics: solution methods for following evolving interfaces, and stabilisation techniques for finite element method sin the context of convection-dominated, ...
Turbulence modeling of transverse flow on ship hulls in shallow water
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:174, Doctoral thesis, 2010)
The hydrodynamic forces acting on a ship that travels in restricted water vary greatly with water depth and the geometry of the ship hull. This will affect the ship maneuverability in terms of various flow effects like for ...
Three-Dimensional Analysis of Slamming
(Dr. ingeniøravhandling, 0809-103X; 2003:85, Doctoral thesis, 2003)
Impact between the water and ship, i.e. slamming can cause important global and local effects. A numerical method has been applied to predict water entry loads on three-dimensional bodies. When the local angle between the ...
Dynamic Response of Flexible Risers due to Unsteady Slug Flow
(Doctoral thesis at NTNU;2015:182, Doctoral thesis, 2015)
In this work the influence of unsteady slug flow on the dynamic response of flexible risers is analysed using a computational tool consisting of one program for prediction of slug flow development, and another program ...
Efficient Prediction of Dynamic Response for Flexible and Multi- Body Marine Structures
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:262, Doctoral thesis, 2008)
A Numerical Study of Wave-in-Deck Impact using a Two-dimensional Constrained Interpolation Profile Method
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:153, Doctoral thesis, 2009)
A Constrained Interpolation Profile method following Hu and Kashiwagi (2004) is developed for wave impact applications. Two-dimensional, unsteady, viscous and incompressible flow is assumed. The numerical model is a finite ...
Numerical Simulation of Three-dimensional Viscous Flow around Marine Structures
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:170, Doctoral thesis, 2005)
The first part of the thesis covers the theoretical background for computational fluid dynamics; specifically, the incompressible Navier-Stokes equations. Some general solution methods are reviewed, as well as the most ...
Modelling and analysis of the gearbox in a floating spar-type wind turbine
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:128, Doctoral thesis, 2013)
This thesis seeks to reveal and investigate important drivetrain dynamics in relation to offshore wind turbines. Emphasis is placed on drivetrains of the spar-type floating wind turbines (FWTs). FWTs are proposed to be ...
Image Processing for Ice Parameter Identification in Ice Management
(Doctoral thesis at NTNU;2015:340, Doctoral thesis, 2015)
Various types of remotely sensed data and imaging technology will aid the development of sea-ice observation to, for instance, support estimation of ice forces critical to Dynamic Positioning (DP) operations in Arctic ...
Maneuvering and Seakeeping of a Single Ship and of Two Ships in Interaction
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:55, Doctoral thesis, 2008)
The main objective of this thesis has been to study the maneuvering and seakeeping of two interacting ships. A systematic approach is adopted. First, the maneuvering behaviour of a single ship in regular waves was considered. ...