Breakdown of similarity solutions: a perturbation approach for front propagation during foam-improved oil recovery

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dc.contributor.authorTorres-Ulloa, Carlos
dc.contributor.authorGrassia, Paul
dc.date2021
dc.date.accessioned2021-04-30T17:07:23Z
dc.date.available2021-04-30T17:07:23Z
dc.description.abstractThe pressure-driven growth model has been employed to study a propagating foam front in the foam-improved oil recovery process. A first-order solution of the model proves the existence of a concave corner on the front, which initially migrates downwards at a well defined speed that differs from the speed of front material points. At later times, however, it remains unclear how the concave corner moves and interacts with points on the front either side of it, specifically whether material points are extracted from the corner or consumed by it. To address these questions, a second-order solution is proposed, perturbing the aforementioned first-order solution. However, the perturbation is challenging to develop, owing to the nature of the first-order solution, which is a similarity solution that exhibits strong spatio-temporal non-uniformities. The second-order solution indicates that the corner's vertical velocity component decreases as the front migrates and that points initially extracted from the front are subsequently consumed by it. Overall, the perturbation approach developed herein demonstrates how early-time similarity solutions exhibiting strong spatio-temporal non-uniformities break down as time proceeds.
dc.identifier.citationPROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES,Vol.477,,2021
dc.identifier.doi10.1098/rspa.2020.0691
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/4164
dc.language.isoen
dc.publisherROYAL SOC
dc.sourcePROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
dc.subject.englishpressure-driven growth model
dc.subject.englishfoams
dc.subject.englishfront propagation
dc.subject.englishporous media
dc.subject.englishTaylor expansion
dc.titleBreakdown of similarity solutions: a perturbation approach for front propagation during foam-improved oil recovery
dc.typeArticle
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