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Modeling viscoelastic flow with discrete methods

Author

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  • Somfai, Ellák
  • Morozov, Alexander N.
  • van Saarloos, Wim

Abstract

The hydrodynamics of viscoelastic materials (for example, polymer melts and solutions) presents interesting and complex phenomena, for example, instabilities and turbulent flow at very low Reynolds numbers due to normal stress effects and the existence of a finite stress relaxation time. This present work is motivated by renewed interest in instabilities in polymer flow. The majority of currently used numerical methods discretize a constitutive equation on a grid with finite difference or similar methods. We present work in progress in which we simulate viscoelastic flow with dissipative particle dynamics. The advantage of this approach is that many of the numerical instabilities of conventional methods can be avoided, and that the model gives clear physical insight into the origins of many viscoelastic flow instabilities.

Suggested Citation

  • Somfai, Ellák & Morozov, Alexander N. & van Saarloos, Wim, 2006. "Modeling viscoelastic flow with discrete methods," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 362(1), pages 93-97.
    • Handle: RePEc:eee:phsmap:v:362:y:2006:i:1:p:93-97
    DOI: 10.1016/j.physa.2005.09.025
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    References listed on IDEAS

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    1. A. Groisman & V. Steinberg, 2000. "Elastic turbulence in a polymer solution flow," Nature, Nature, vol. 405(6782), pages 53-55, May.
    2. Ronald G. Larson, 2000. "Turbulence without inertia," Nature, Nature, vol. 405(6782), pages 27-28, May.
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