On uniqueness and existence of entropy solutions of weakly coupled systems of nonlinear degenerate parabolic equations
We prove existence and uniqueness of entropy solutions for the Cauchy problem of weakly coupled systems of nonlinear degenerate parabolic equations. We prove existence of an entropy solution by demonstrating that the Engquist-Osher finite difference scheme is convergent and that any limit function s...
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Texas State University
2003-04-01
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doaj-14cf9b1128484096bb00095d64fcadfe2020-11-24T23:40:17ZengTexas State UniversityElectronic Journal of Differential Equations1072-66912003-04-01200346131On uniqueness and existence of entropy solutions of weakly coupled systems of nonlinear degenerate parabolic equationsHelge HoldenKenneth H. KarlsenNils H. RisebroWe prove existence and uniqueness of entropy solutions for the Cauchy problem of weakly coupled systems of nonlinear degenerate parabolic equations. We prove existence of an entropy solution by demonstrating that the Engquist-Osher finite difference scheme is convergent and that any limit function satisfies the entropy condition. The convergence proof is based on deriving a series of a priori estimates and using a general $L^p$ compactness criterion. The uniqueness proof is an adaption of Kruzkov's ``doubling of variables'' proof. We also present a numerical example motivated by biodegradation in porous media. http://ejde.math.txstate.edu/Volumes/2003/46/abstr.htmlNonlinear degenerate parabolic equationsweakly coupled systemsentropy solutionuniquenessexistencefinite difference method |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Helge Holden Kenneth H. Karlsen Nils H. Risebro |
spellingShingle |
Helge Holden Kenneth H. Karlsen Nils H. Risebro On uniqueness and existence of entropy solutions of weakly coupled systems of nonlinear degenerate parabolic equations Electronic Journal of Differential Equations Nonlinear degenerate parabolic equations weakly coupled systems entropy solution uniqueness existence finite difference method |
author_facet |
Helge Holden Kenneth H. Karlsen Nils H. Risebro |
author_sort |
Helge Holden |
title |
On uniqueness and existence of entropy solutions of weakly coupled systems of nonlinear degenerate parabolic equations |
title_short |
On uniqueness and existence of entropy solutions of weakly coupled systems of nonlinear degenerate parabolic equations |
title_full |
On uniqueness and existence of entropy solutions of weakly coupled systems of nonlinear degenerate parabolic equations |
title_fullStr |
On uniqueness and existence of entropy solutions of weakly coupled systems of nonlinear degenerate parabolic equations |
title_full_unstemmed |
On uniqueness and existence of entropy solutions of weakly coupled systems of nonlinear degenerate parabolic equations |
title_sort |
on uniqueness and existence of entropy solutions of weakly coupled systems of nonlinear degenerate parabolic equations |
publisher |
Texas State University |
series |
Electronic Journal of Differential Equations |
issn |
1072-6691 |
publishDate |
2003-04-01 |
description |
We prove existence and uniqueness of entropy solutions for the Cauchy problem of weakly coupled systems of nonlinear degenerate parabolic equations. We prove existence of an entropy solution by demonstrating that the Engquist-Osher finite difference scheme is convergent and that any limit function satisfies the entropy condition. The convergence proof is based on deriving a series of a priori estimates and using a general $L^p$ compactness criterion. The uniqueness proof is an adaption of Kruzkov's ``doubling of variables'' proof. We also present a numerical example motivated by biodegradation in porous media. |
topic |
Nonlinear degenerate parabolic equations weakly coupled systems entropy solution uniqueness existence finite difference method |
url |
http://ejde.math.txstate.edu/Volumes/2003/46/abstr.html |
work_keys_str_mv |
AT helgeholden onuniquenessandexistenceofentropysolutionsofweaklycoupledsystemsofnonlineardegenerateparabolicequations AT kennethhkarlsen onuniquenessandexistenceofentropysolutionsofweaklycoupledsystemsofnonlineardegenerateparabolicequations AT nilshrisebro onuniquenessandexistenceofentropysolutionsofweaklycoupledsystemsofnonlineardegenerateparabolicequations |
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1725510266748141568 |