University of Limerick Institutional Repository

Heat and mass transfer in dispersed two-phase flows

DSpace Repository

Show simple item record

dc.contributor.advisor O'Brien, Stephen B.G.
dc.contributor.advisor Lee, William T. Moroney, Kevin M. 2018-02-21T15:50:25Z 2018-02-21T15:50:25Z 2016
dc.description peer-reviewed en_US
dc.description.abstract Industrial and manufacturing processes are an abundant source of rich and complex problems amenable to investigation with mathematical logic and techniques. Once a problem is identi ed and the right questions are formulated, a range of mathematical modelling methodologies can be leveraged. These methods can be used to simplify the problem to gain valuable insight into the underlying physical mechanisms of the system under consideration. The resulting formulated model can be used to explain observed phenomenon, explore poorly understood behaviour, determine optimal parameters and predict future states of the system. In this thesis, two problems relating to industrial processes are studied. Consistently extracting the desired level of soluble material from ground co ee with hot water is a key objective in any co ee brewing method. In this study, a co ee extraction model is derived from rst principles, using volume averaging techniques, with a view to relating the quality of brewed co ee with the parameters of the underlying processes. Physical mechanisms for the dissolution and transport of co ee are included. The model is parametrised with experimental data for different extraction experiments. The model is non-dimensionalised, to establish the dominant mechanisms during brewing. Numerical and asymptotic solutions are presented. The hydration process is a key step in the production of soft contact lenses. Hydration primarily involves the removal of leachable chemicals, used as process aids during earlier manufacturing stages, from the contact lens. The leachable materials are removed by washing the lenses with a solvent. In this work, macroscopic models of heat and mass transport in the hydration process are formulated based on experimental data. The heat transport equations are leveraged to estimate the size of heating units required to maintain the speci ed process temperatures. Chemical transport in the hydration process is modelled with a view to optimising the system parameters. en_US
dc.language.iso eng en_US
dc.publisher Univeristy of Limerick en_US
dc.subject industrial and manufacturing processes en_US
dc.subject heat and mass transfer en_US
dc.subject mathematical modelling methodologies en_US
dc.title Heat and mass transfer in dispersed two-phase flows en_US
dc.type info:eu-repo/semantics/doctoralThesis en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.type.supercollection ul_theses_dissertations en_US
dc.contributor.sponsor SFI en_US
dc.relation.projectid 12/IA/1683 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search ULIR


My Account