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Non-Newtonian behaviour of the gyroid mesophase: A lattice-Boltzmann study

Author

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  • Giupponi, G.
  • Coveney, P.V.

Abstract

We use a lattice-Boltzmann (LB) kinetic scheme for modelling amphiphilic mixtures to impose Couette flow on self-assembled gyroid mesophase. We report evidence of non-Newtonian behaviour (“shear thinning”) and we show that the particular lack of inversion symmetry which characterizes the gyroid unit cell does not quantitatively affect the flow dynamics beyond a certain predictable shear velocity threshold. This purely kinetic approach is of general importance for the modelling and simulation of complex fluid flows in situations when rheological properties cannot be predicted a priori.

Suggested Citation

  • Giupponi, G. & Coveney, P.V., 2006. "Non-Newtonian behaviour of the gyroid mesophase: A lattice-Boltzmann study," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 72(2), pages 124-127.
    • Handle: RePEc:eee:matcom:v:72:y:2006:i:2:p:124-127
    DOI: 10.1016/j.matcom.2006.05.035
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