Concentration Fluctuations in Polymer Solutions under Extensional Flow

ORAL

Abstract

Polymer solutions under flow are known to exhibit stress-concentration coupling that can anisotropically amplify concentration fluctuations. This phenomenon has been extensively studied for shear flow, but is less well understood for extensional flows. Using a two-fluid model, we study concentration fluctuation amplification in polymer solutions under a variety of extensional flows, including mixed shear and extension.

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Authors

  • Michael Villet

    University of California, Santa Barbara

  • Michael Cromer

    University of California, Santa Barbara

  • Glenn Fredrickson

    University of California, Santa Barbara, Department of Chemical Engineering, UCSB, University of California Santa Barbara

  • Gary Leal

    University of California, Santa Barbara

  • Roman Stepanyan

    DSM Ahead, Geleen, Netherlands

  • Markus Bulters

    DSM Ahead, Geleen, Netherlands