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Statistical models of diffusion and aggregation for coke formation in a catalyst pore

Aarão Reis, F.D.A. - In: Physica A: Statistical Mechanics and its Applications 350 (2005) 2, pp. 407-417

We simulated models of diffusion and aggregation in long pores of small widths in order to represent the basic … of molecular diffusion is also analyzed via models of lattice random walks biased along the pores. The aggregation at the … plugging, the average aggregation position slowly decreases with the number N of deposited particles approximately as N-0 …

Persistent link: https://www.econbiz.de/10010590999

Two dimensional versus one dimensional behavior for biased diffusion and aggregation in a network of channels

Ruiz Barlett, V.; Hoyuelos, M.; Mártin, H.O. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 1, pp. 52-59

We present an extension to two dimensions of a one-dimensional model for a fluid that drags particles in a narrow channel [V. Ruiz Barlett, M. Hoyuelos, H.O. Mártin, Physica A 387 (2008) 4623–4629]. We consider a network of narrow channels on a strip. There is a flux rate J of particles that...

Persistent link: https://www.econbiz.de/10011057242

Biased diffusion with aggregation of particles in a narrow channel

Ruiz Barlett, V.; Hoyuelos, M.; Mártin, H.O. - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 18, pp. 4623-4629

We consider a fluid that drags impurities in a narrow channel. The impurities are particles of a size comparable to the channel diameter. When two particles collide they produce a cluster that cannot move through the medium and remain immobile. When the accumulation of clusters saturate the...

Persistent link: https://www.econbiz.de/10011059069

New simple properties of a few irregular systems

Sapoval, B.; Andrade, J.S.; Baldassarri, A.; Desolneux, A. - In: Physica A: Statistical Mechanics and its Applications 357 (2005) 1, pp. 1-17

initiator of the fractal morphology. Finally, it is shown that the diffusion reorganized aggregation mechanism may display …

Persistent link: https://www.econbiz.de/10011062303