Blar i Institutt for energi og prosessteknikk på utgivelsesdato
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Compact Interior Heat Exchangers for CO2 Mobile Heat Pumping Systems
(Dr. ingeniøravhandling, 0809-103X; 2003:69, Doctoral thesis, 2003)The natural refrigerant carbon dioxide (CO2) offers new possibilities for design of flexible, efficient and environmentally safe mobile heat pumping systems. As high-efficient car engines with less waste heat are developed, ... -
Combustion modeling in turbulent boundary-layer flows
(Doktor ingeniøravhandling;2003:38, Doctoral thesis, 2003)This thesis presents an investigation of turbulence modeling and chemical-kinetics effects, including local extinction, for turbulent reacting boundary-layer flows by using Favre-averaged Navier-Stokes equations. Local ... -
Design Aspects of a Low-NOx Burner for a Stirling Engine
(Dr. ingeniøravhandling, 0809-103X; 2003:8, Doctoral thesis, 2003)The Stirling engine is a promising prime mover for micro-scale combined heat and power. For Stirling engines with heat supply by combustion, the external heating system is one of the most important parts. It has major ... -
On mathematical modelling and mumerical simulation of transient compressible flow across open boundaries
(Dr. ingeniøravhandling, 0809-103X; 2003:73, Doctoral thesis, 2003)In numerical simulations of turbulent reacting compressible flows, artificial boundaries are needed to obtain a finite computational domain when an unbounded physical domain is given. Artificial boundaries which fluids are ... -
Transport Phenomena in Dehydraution of Fish Muscle
(Dr. ingeniøravhandling, 0809-103X; 2003:48, Doctoral thesis, 2003)Dehydration is an ancient method of fish preservation, and comprehensive experience has been gathered from various products and treatments. Several attempts have been made to improve the understanding of the dehydration ... -
Hybrid Flux Splitting Schemes for Numerical Resolution of Two-Phase Flows
(Doctoral thesis, 2003)This thesis deals with the construction of numerical schemes for approximating solutions to a hyperbolix two-phase flow model. Numerical schemes for hyperbolic models are commonly divided in two main classes: Flux Vector ... -
Combustion Modeling in Turbulent Boundary-Layer Flows
(Dr. ingeniøravhandling, 0809-103X; 2003:38, Doctoral thesis, 2003)This thesis presents an investigation of turbulence modeling and chemical-kinetics effects, including local extinction, for turbulent reacting boundary-layer flows by using Favre-averaged Navier-Stokes equations. Local ... -
Adhesion of Bacillus Cereus Spores to Surface
(Dr. ingeniøravhandling, 0809-103X; 2003:93, Doctoral thesis, 2003)This thesis deals with the adhesion and removal of the spore forming pathogenic bacterium Bacillus cereus. The spores of Bacillus cereus are known for being hydrophobic and adhere well to other hydrophobic surfaces. The ... -
Transition to Large Scale Use of Hydrogen and Sustainable Energy Services and nonlinearity: Choices of technology and infrastructure under path dependence, feedback
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:71, Doctoral thesis, 2004)We live in a world of becoming. The future is not given, but forms continuously in dynamic processes where path dependence plays a major role. There are many different possible futures. What we actually end up with is ... -
Two-phase Flow Distribution in Heat Exchanger Manifolds
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:1, Doctoral thesis, 2004)The current study has investigated two-phase refrigerant flow distribution in heat exchange manifolds. Experimental data have been acquired in a heat exchanger test rig specially made for measurement of mass flow rate and ... -
Dynamic Simulation of a Natural Gas Liquefaction Plant
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:156, Doctoral thesis, 2004)This thesis describes a new general purpose dynamic process simulator applied to a natural gas liquefaction plant. More specifically, the Multi Fluid Cascade Process (MFCP). MFCP is the “Statoil Linde LNG Technology Alliance” ... -
Hydrodynamic and magnetohydrodynamic turbulence : some numerical experiments
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:128, Doctoral thesis, 2004)This thesis consists of a brief introduction to hydrodynamics and magnetohydrodynamics, followed by five articles that address different aspects of hydrodynamic and magnetohydrodynamic turbulence. Paper A: Bottleneck ... -
Experimental investigation of turbulent flow in a channel with rough walls
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:62, Doctoral thesis, 2004)This thesis focuses on the effects of surface roughness on the turbulent structure in a two-dimensional channel flow. Various turbulence quantities have been investigated for a rough surface generated by either spanwise ... -
An immersed interface method for two-dimensional modelling of stratified flow in pipes
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:139, Doctoral thesis, 2004)This thesis deals with the construction of a numerical method for solving two-dimensional elliptic interface problems, such as fully developed stratified flow in pipes. Interface problems are characterized by its non-smooth ... -
Residential CO2 Heat Pump System for Combined Space Heating and Hot Water Heating
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:53, Doctoral thesis, 2004)Carbon dioxide (CO2, R-744) has been identified as a promising alternative to conventional working fluids in a number of applications due to its favourable environmental and thermophysical properties. Previous work on ... -
An experimental investigation of draft tube flow
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:36, Doctoral thesis, 2004)This thesis presents a study of the flow in draft tubes on hydro turbines, with different runner cone configurations, operating in the part load operating range. Dynamic wall pressure measurements on a model Francis ... -
Numerical analysis of the head covers deflection and the leakage flow in the guide vanes of high head Francis turbines
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:115, Doctoral thesis, 2004)This thesis includes a brief presentation of the different losses developed in high head Francis turbines, where special attention is paid to the losses in the guide vanes due to the head covers deflection. The different ... -
Skinfriction in turbulent channel flow
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:97, Doctoral thesis, 2004)The main focus of this thesis is turbulent flow in a lubricated plane channel. This flow is mainly studied by direct numerical simulations (DNS). Both the lubricating film and the bulk-fluid velocity and pressure fields ... -
Valg mellom naturlig, hybrid og mekanisk ventilasjon
(Teknisk rapport / SINTEF energiforskning;, Research report, 2004) -
Time-dependent boundary conditions for multiphase flow
(Doktoravhandlinger ved NTNU, 1503-8181, Doctoral thesis, 2004)In this thesis a set of boundary conditions for multiphase flow is suggested. Characteristic-based boundary conditions are reviewed for single-phase flow. The problem of open-boundary conditions is investigated, and to ...