SIMULATION OF COMPLEX MULTIPHASE, MULTI-COMPONENT, REACTING FLOWS IN POROUS MEDIA

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dc.contributor.advisor Professor Mike O’Sullivan en
dc.contributor.author Zarrouk, Sadiq J. en
dc.date.accessioned 2007-01-07T23:05:56Z en
dc.date.available 2007-01-07T23:05:56Z en
dc.date.issued 2004 en
dc.identifier.citation Thesis (PhD--Engineering Science)--University of Auckland, 2004. en
dc.identifier.uri http://hdl.handle.net/2292/293 en
dc.description.abstract In this study we are concerned with the modelling of multi-component, multiphase chemically reacting flows in porous media, with particular application to the spontaneous combustion of coal and the extraction of coalbed methane. These two related problems involve complex multiphase, multi-component flow in a porous medium. Chemical reactions, adsorption, gaseous diffusion and changes in porosity and permeability are important in one or both of these problems. These matters are discussed in general in the first few chapters of the thesis. Several models for the spontaneous combustion of coal that include the effect of a diminishing reaction rate are investigated and a new formulation in the form of a generic power law model is introduced. A numerical module for modelling the spontaneous combustion of coal is described, based on the TOUGH2 code. A new equation of state (EOS) module is developed including realistic physical properties for all gases involved. The modified version of TOUGH2 is used for modelling the adiabatic method for testing the reactivity of coal samples. The results agree very well with experimental measurements for coal samples from different mines in New Zealand and Australia. Moisture effect on the reaction rate was then introduced to TOUGH2 using a new twophase EOS module with water and air broken into its main components (Nitrogen, Oxygen, Carbon dioxide and Argon). Finally the production of methane from low rank coalbeds is investigated. A new EOS for mixture of water and methane is developed and incorporated into the TOUGH2 code to produce a new and versatile coalbed methane simulator. It is validated by running some simple test problems and comparing results with those obtained with the commercial COMET simulator. en
dc.format Scanned from print thesis en
dc.language.iso en en
dc.publisher ResearchSpace@Auckland en
dc.relation.ispartof PhD Thesis - University of Auckland en
dc.relation.isreferencedby UoA1235954 en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.title SIMULATION OF COMPLEX MULTIPHASE, MULTI-COMPONENT, REACTING FLOWS IN POROUS MEDIA en
dc.type Thesis en
thesis.degree.discipline Engineering Science en
thesis.degree.grantor The University of Auckland en
thesis.degree.level Doctoral en
thesis.degree.name PhD en
dc.rights.holder Copyright: The author en
pubs.local.anzsrc 09 - Engineering en
pubs.org-id Faculty of Engineering en


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