Journal
APPLIED MATHEMATICS LETTERS
Volume 18, Issue 11, Pages 1293-1303Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.aml.2005.02.027
Keywords
Saffman-Taylor instability; Hele-Shaw flows; tertiary displacement processes; Sturm-Liouville problem; dispersion relation
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We consider the problem of displacement processes in a three-layer fluid in a Hele-Shaw cell modeling enhanced processes of oil recovery by polymer flooding. The middle layer sandwiched between water and oil contains polymer-thickened water. We provide lower bounds on the length of the intermediate layer and on the amount of polymer in the middle layer for stabilizing the leading front to a specified level. We also provide an upper bound on the growth rate of instabilities for a given viscous profile of the middle layer. (c) 2005 Elsevier Ltd. All rights reserved.
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