Browsing Fakultet for naturvitenskap (NV) by Subject "Industriell kjemi og bioteknologi, Prosess-systemteknikk"
Now showing items 1-20 of 35
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A Graphical User Interface for the Computational Fluid Dynamics Software OpenFOAM
(Master thesis, 2014)A graphical user interface for the computational fluid dynamics software OpenFOAM has been constructed. OpenFOAM is a open source and powerful numerical software, but has much to be wanted in the field of user friendliness. ... -
A Modeling Framework for Control of Smart-Scale Tubular Polymerization Reactors - A Case Study on Nonlinear Model-based Predictive Control of an Emulsion Copolymerization Process
(Master thesis, 2014)Polymer science is the underlying topic of this master's thesis, and the main scope is to develop and deploy models for on-line optimization and control for polymerization reactors. Specifically, free-radical emulsion ... -
A Parallelized Global Optimization Method for use in Parameter Estimation
(Master thesis, 2018)When modeling biological systems with a bottom-up approach, the system parameters need to be calibrated for the model behavior to match that of the physical system. The problem is typically presented in the form of an ... -
Adaptive Control for Severe Slugging Mitigation
(Master thesis, 2015)Offshore production facilities using pipeline-riser systems are experiencing terrain-induced cyclic flow instability due to its pipeline configuration and multiphased flow. The cyclic flow instability has been referred to ... -
Controllability Analysis of Ammonia Synthesis Loops
(Master thesis, 2018)Present ammonia synthesis loops normally operate under stationary conditions. Generally, ammonia synthesis loops can be slow to ramp up and down due to manual mode operation. Furthermore, load disturbances are not rejected ... -
Dynamic modelling of a Hydrocracker
(Master thesis, 2016)Different types of petroleum refining processes were considered to be modelled in the Kongsberg dynamic modelling software K-Spice. Multiple oil and gas processing units exist in the model library, which begs the question ... -
Experiments on ion exchange membrane
(Master thesis, 2017)To achieve the goal of increasing the amount of biofuels, esters with their acid and alcohol components made from lignocellulose can be a sustainable technology. The maximal achievable concentration of carboxylic acids ... -
Health-Aware Control of a Subsea Compression System
(Master thesis, 2018)Subsea processing technology is enabling production from oil and gas fields with larger water depths, longer tie-back distances and harsher climate conditions. Although moving production and processing facilities to the ... -
Implementation and evaluation of a new solution approach for semidefinite programming
(Master thesis, 2017)The main objective of this thesis was to perform initial studies on a new approach for solving semidefinite programs. In this solution method, a nonsmooth representation of the optimality conditions of semidefinite programs ... -
Lagrangian Decomposition for Dynamic Real-Time Optimization: Applied to Production Optimization Network
(Master thesis, 2017)The scope of this thesis was to investigate the use of lagrangian decomposition for a dynamic real-time optimization(RTO) problem. The decomposition was performed on a gas lifted two-well network, controlled by a nonlinear ... -
Long Distance Guidance and Navigation in Bats
(Master thesis, 2015)The motivation for this master thesis was to investigate whether or not the Mexican fish-eating bat, Myotis vivesi, uses information from the earth's magnetic field for navigational purposes. Other possible navigational ... -
Model predictive control of a polyolefin reactor
(Master thesis, 2015)Two models for the copolymerization of propylene and ethylene in a fluidized bed reactor (FBR) were developed. A simple model for control; and a more advanced model which served as both a replacement for logged industrial ... -
Model predictive control of an LNG liquefaction process using Jmodelica.org
(Master thesis, 2018)In this thesis Model Predictive Control (MPC) theory has been used to develop a controller for a Liquefied Natural Gas (LNG) liquefaction process using the Jmodelica.org framework. Jmodelica.org is an open source platform ... -
Modeling and Optimization of a Subsea Oil-Water Separation System
(Master thesis, 2015)Compact oil-water separators are essential for treatment of the production streams of oil fields at deep waters. The aim of this work has been to develop a model for a compact oil-water separation system for optimization ... -
Modeling and simulation of a membrane module
(Master thesis, 2017)This work presents a way of simulating the operation of an anion exchange membrane module. A CFD simulation of this module was made in OpenFOAM software. The membrane module contains an ion exchange membrane and is used ... -
Modeling of a Hydrogen Refueling Station
(Master thesis, 2014)Gaseous hydrogen is one of several alternatives to fossil-based vehicle fuels. In order to establish hydrogen as a good alternative, it is necessary to implement hydrogen refueling stations that can compete with conventional ... -
Modelling and Control of Coalescence Based Gravity Separators in a Subsea Separation System - with Models of Produced Water Treatment
(Master thesis, 2018)Subsea separation of well fluids is a way to reduce the cost of topside processing, and to simplify and reduce the export of products. Subsea separation consist of bulk separators and purifiers, to separate the multi-phase ... -
Modelling and Simulation of a Two-Stage Refrigeration Cycle
(Master thesis, 2015)A two-stage refrigeration cycle was modelled and optimized in MATLAB. The optimum was found to be very flat, resulting in small losses from disturbances and implementation errors. The two unconstrained degrees of freedom ... -
Modelling Failure Mechanisms in Subsea Equipment
(Master thesis, 2016)The oil and gas industry is recently facing a challenge to increase the efficiency and reduce the costs. One way to reduce costs is to better optimize the maintenance strategy. By applying failure mechanism models it could ... -
Nonsmooth Modelling of Multiphase Multicomponent Heat Exchangers with Phase Changes
(Master thesis, 2018)Developing proper and consistent dynamic models of processes with phase changes can be challenging. Appearance and disappearance of phases result in changes in the system equations and is not known a priori. Dynamic models ...