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Mathematical analysis of a nonlinear parabolic equation arising in the modelling of non-newtonian flows

  • Université Paris Dauphine
  • École des ponts

Research output: Contribution to journalArticlepeer-review

Abstract

The mathematical properties of a nonlinear parabolic equation arising in the modelling of concentrated suspension flows are investigated. The peculiarity of this equation is that it may degenerate into a hyperbolic equation (in fact, a linear advection equation). Depending on the initial data, at least two situations can be encountered: the equation may have a unique solution in a convenient class, or it may have infinitely many solutions. The present article is the theoretical side of a joint project with rheologists, aiming at better understanding the flows of complex fluids.

Original languageEnglish
Pages (from-to)60-82
Number of pages23
JournalSIAM Journal on Mathematical Analysis
Volume37
Issue number1
DOIs
Publication statusPublished - 1 Dec 2005

Keywords

  • Complex fluids
  • Concentrated suspensions
  • Degenerate parabolic equation
  • Non-Newtonian flows
  • Nonlinear parabolic equation
  • Viscosity solutions

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