Volume 73, Number 4, February 2006
|Page(s)||533 - 539|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|Published online||13 January 2006|
Emergence of rheological properties in lattice Boltzmann simulations of gyroid mesophases
Centre for Computational Science, Department of Chemistry University College London - 20 Gordon Street, WC1H 0AJ, London, UK
2 Institute for Computational Physics, University of Stuttgart Pfaffenwaldring 27, 70569 Stuttgart, Germany
Accepted: 21 December 2005
We use a lattice Boltzmann (LB) kinetic scheme for modelling amphiphilic fluids that correctly predicts rheological effects in flow. No macroscopic parameters are included in the model. Instead, three-dimensional hydrodynamic and rheological effects are emergent from the underlying particulate conservation laws and interactions. We report evidence of shear thinning and viscoelastic flow for a self-assembled gyroid mesophase. 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.
PACS: 47.11.+j – Computational methods in fluid dynamics / 82.70.Uv – Surfactants, micellar solutions, vesicles, lamellae, amphiphilic systems (hydrophilic and hydrophobic interactions) / 83.60.-a – Rheology: Material behaviour
© EDP Sciences, 2006
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