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Cluster growth by diffusion-limited aggregation in shear flow

Author

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  • Kovács, T.
  • Bárdos, G.

Abstract

A two-dimensional square lattice computer model was used to study the cluster growth process by irreversible aggregation on the boundary of a shear flowing colloidal solution. The trajectories of the aggregating particles are determined by both a diffusion component and the streamlines of the flow. The streamlines were obtained by iterative solution of the Navier-Stokes equation. For zero drift (the case of simple DLA), the horizontal growth of the aggregates is symmetric, but even a very weak drift breaks down this symmetry considerably. The fractal dimensions obtained in the cases of zero and nonzero drift seem to be slightly different: 1.67 and 1.78, respectively.

Suggested Citation

  • Kovács, T. & Bárdos, G., 1997. "Cluster growth by diffusion-limited aggregation in shear flow," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 247(1), pages 59-66.
    • Handle: RePEc:eee:phsmap:v:247:y:1997:i:1:p:59-66
    DOI: 10.1016/S0378-4371(97)00397-X
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