Model for erosion-deposition patterns

Details Model for erosion-deposition patterns Model for erosion-deposition patterns

2007-12-05

arxiv.org/abs/0712.0784v2

Physics

Computational Physics

8 pages, 12 figures, submitted to Phys. Rev. E

Scientific paper

10.1103/PhysRevE.77.061402

We investigate through computational simulations with a pore network model the formation of patterns caused by erosion-deposition mechanisms. In this model, the geometry of the pore space changes dynamically as a consequence of the coupling between the fluid flow and the movement of particles due to local drag forces. Our results for this irreversible process show that the model is capable to reproduce typical natural patterns caused by well known erosion processes. Moreover, we observe that, within a certain range of porosity values, the grains form clusters that are tilted with respect to the horizontal with a characteristic angle. We compare our results to recent experiments for granular material in flowing water and show that they present a satisfactory agreement.

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