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dc.contributor.authorHafver, Jørneng
dc.date.accessioned2008-10-09T08:55:42Z
dc.date.available2008-10-09T08:55:42Z
dc.date.issued2008eng
dc.identifier.urihttps://hdl.handle.net/1956/2791
dc.description.abstractParabolic advection-diffusion equations arise when modelling flow in porous media. We will in this thesis discuss two different problem set-ups from which these types of equations arise. - Groundwater contamination with diffusion/dispersion. - Fractional-flow formulation of immiscible two-phase flow. Streamline methods equipped with time-off-light coordinates are attractive alternatives or supplements to traditional solution methods of advection diffusion equations. This is particulary the case when cross-streamline diffusive effects can be neglected. In this case the possibly 3-dimensional equations can be reduced to 1-dimensional equations along the streamlines . If cross-streamline effects need to be taken into account, these effects can be simulated on background grids through mappings which introduce significant numerical diffusion. We propose a method to take care of the cross-streamline diffusive effects along normallines in 2D. It is based on operator splitting, reducing the 2D equations to 1-dimensional equations along streamlines and normallines.en_US
dc.language.isoengeng
dc.publisherThe University of Bergenen_US
dc.titleStreamline methods for parabolic differential equations.en_US
dc.typeMaster thesis
dc.rights.holderThe authoren_US
dc.rights.holderCopyright the author. All rights reserveden_US
dc.subject.nsiVDP::Matematikk og Naturvitenskap: 400::Matematikk: 410nob


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