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Bubble formation in selected industrial problems

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dc.contributor.advisor Lee, William T. Devereux, Michael 2012-02-10T13:38:04Z 2012-02-10T13:38:04Z 2011
dc.description peer-reviewed en_US
dc.description.abstract Foam and bubbles are ubiquitous in industry and nature. They have a wide range of applications but are also an undesirable product of certain processes. This thesis considers two individual industrial problems with the common phenomenon of bubble and foam formation. Bubble nucleation is a phenomenon observed in many different physical situations from decompression sickness to champagne effervescence. It is of vital importance to the formation of a creamy head that is distinctive to stout beers. I present experimental work that demonstrates that cellulose fibres can be used to initiate stout beers and could serve as an alternative to widget technology. I derive mathematical models for the various gas pocket geometries I observed in cellulose fibres that produce bubbles when submerged in stout beer. These models are solved and compared to experimental results where possible to give the first quantitative evaluation of the current models of bubble nucleation. I present the work done to model a novel design for accurate volume measurement of milk. The new design proposes a modification of the air elimination vessel used in current milk pumping systems to increase accuracy by preventing air bubbles being pumped with milk. We consider the operation of the entire system to pump milk, the flow of milk inside the air elimination vessel, the entrainment of air bubbles into a pool of milk and the drainage of foam. en_US
dc.language.iso eng en_US
dc.publisher University of Limerick en_US
dc.subject bubble nucleation en_US
dc.subject industry en_US
dc.title Bubble formation in selected industrial problems en_US
dc.type Doctoral thesis 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.type.restriction none en

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