Browsing Chemical Engineering, Department of by Title
Now showing items 196215 of 383

Macromolecular Orientation of Rigid Dumbbells in Shear Flow
We use molecular modeling to study the nonequilibrium behaviour of polymeric fluids. Specifically, we explore the macromolecular orientation induced by shear flow fields. We choose the simplest molecular model, the rigid ... 
Macromolecular Origins of Fifth ShearStress Harmonic in LargeAmplitude Oscillatory Shear Flow
(201608)This study examines the simplest relevant molecular model of a polymeric liquid in largeamplitude oscillatory shear (LAOS) flow: the suspension of rigid dumbbells in a Newtonian solvent. For such suspensions, the viscoelastic ... 
Macromolecular Tumbling and Wobbling in LargeAmplitude Oscillatory Shear Flow
(201811)For a suspension of rigid dumbbells, in any simple shear flow, we recently solved for the diffusion equation for the orientation distribution function by a power series expansion in the shear rate magnitude. In this paper, ... 
Mathematical model for ethane pyrolysis in an industrial furnace
(20140923)Ethane pyrolysis is an important industrial process that occurs by passing ethane and steam through radiant coils (tubes) in gasfired furnaces to produce ethylene and other light olefins. Undesirable side reactions that ... 
A Mathematical Model for the Devolatilization of EPDM Rubber in a Series of Steam Stripping Vessels
(20121024)A steadystate mathematical model for the stripping section of an industrial EPDM rubber production process was developed for a threetank process, and two fourtank processes. The experiments that were conducted to determine ... 
Mathematical Modeling of Arborescent Polyisobutylene Production in Batch Reactor Using Novel Material Balance and Monte Carlo Methods
(20141002)Four mathematical models have been developed to describe copolymerization of inimer and isobutylene via living carbocationic polymerization in batch reactors. In this system, there are six different propagation rate constants ... 
Mathematical Modeling of Arborescent Polyisobutylene Production in Continuous and SemiBatch Reactors
Mathematical models are developed for arborescent polyisobutylene (arbPIB) production in continuousstirredtank and semibatch reactors. The objective of the research is to assess how reactor type influences final polymer ... 
Mathematical Modeling of Nonpremixed Turbulent MethaneAir Flameless Combustion in a StrongJet/WeakJet Burner
(20100923)Flameless combustion technology has been developed over the past twenty years achieving lowNOx emissions and high energy efficiency for industrial applications. In the present work, three aspects of flameless combustion ... 
Mathematical Modeling of Nylon 6/6,6 Copolymerization
This thesis develops a mathematical model for the hydrolytic copolymerization of caprolactam with hexamethylene diamine (HMD) and adipic acid (ADA) in a batch reactor to produce nylon 6/6,6 copolymer. The reaction mechanism ... 
Mathematical Modeling of PEM Fuel Cell Cathodes: Comparison of FirstOrder and HalfOrder Reaction Kinetics
(20080919)Mathematical modeling helps researchers to understand the transport and kinetic phenomena within fuel cells and their effects on fuel cell performance that may not be evident from experimental work. In this thesis, a 2D ... 
Mathematical Modelling for Carbon Dioxide Removal from Flue Gas Using Micronsize Water Droplets
Numerous technologies have been developed to reduce the amount of CO2 released to the environment via combustion processes. A promising process named the C3 process uses micron size water droplets to remove contaminants ... 
Mathematical Modelling of an Industrial Steam Methane Reformer
(20090108)A mathematical model of a steammethane reformer (SMR) was developed for use in process performance simulations and online monitoring of tubewall temperatures. The model calculates temperature profiles for the outertube ... 
Mathematical Models of Polyether Production From BioBased 1,3Propanediol
(20150116)This research develops mathematical models to simulate PO3G productions using superacid catalyst in a batch reactor, to predict superacid catalyst effects on the polymerization rates and product qualities. The models ... 
MatrixDerived Microcarriers for Adipose Tissue Engineering
(20101201)In vivo, adipose tissue demonstrates only a limited capacity for selfrepair, and the longterm treatment of subcutaneous defects remains an unresolved clinical problem. With the goal of regenerating healthy tissues, many ... 
A MeanSquaredErrorBased Methodology for Parameter Ranking and Selection to Obtain Accurate Model Predictions at Key Operating Conditions
(20150106)In this thesis, a new meansquarederror (MSE)based criterion, rCCW, is proposed to select the optimal number of parameters to estimate from the ranked list of parameters considering the operating region where accurate ... 
Measurement System Design for Chemical Processes
(20110616)The problem of measurement system design for stochastic linear systems, a popular modeling strategy for chemical processes, is addressed. A multiobjective optimization approach is used. The design metrics are the capital ... 
Mechanistic Studies of Radicalmediated Polyolefin Modifications
(20090112)The free radical addition of saturated polymers and small molecules to unsaturated monomers is used to prepare functional derivatives under solventfree, reactive extrusion conditions. Of particular interest are the dynamics ... 
MediumChainLength Poly (3Hydroxyalkanoate) Nanoparticle Suspensions
(20160818)The main goal of this thesis was to prepare mediumchainlength poly3hydroxyalkanoate (mclPHA) nanoparticle suspensions at high solids content (≥ 10 % w/v). A twostage emulsificationsolvent evaporation process was ... 
Membrane Electrode Assembly Fabrication and Test Method Development for a Novel Thermally Regenerative Fuel Cell
(20121013)A test system for the performance analysis of a novel thermally regenerative fuel cell (TRFC) using propiophenone and hydrogen as the oxidant and fuel respectively was designed and built. The test system is capable of ... 
A Method to Improve Cartilage Integration
(20091223)One major barrier that prevents cartilage integration following mosaic arthroplasty is the presence of a zone of chondrocyte death (ZCD) that is generated upon osteochondral graft harvest, which can extend up to 400 μm ...