Lagrangian viscoelastic flow computations using a generalized molecular stress function model

Henrik K. Rasmussen

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    Abstract

    A new finite element technique for the numerical simulation of 3D time-dependent flow of viscoelastic fluid is presented. The technique is based on a Lagrangian kinematics description of the fluid flow. It represents a further development of the 3D Lagrangian integral method (3D-LIM) from a Rivlin–Sawyers fluid to a fluid described by a generalized molecular stress function (MSF) model allowing the use of dissipative convective constraint release in the constitutive equation. The convergence of the method is demonstrated on the axis-symmetric problem of the inflation of a polymeric membrane only restricted by a clamping ring.
    Original languageEnglish
    JournalJournal of Non-Newtonian Fluid Mechanics
    Volume106
    Pages (from-to)107-120
    ISSN0377-0257
    Publication statusPublished - 2002

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