Cellular Automaton Model of Precipitation/dissolution Coupled with Solute Transport

Content Provider	Semantic Scholar
Author	Karapiperis, T.
Copyright Year	1995
Abstract	Precipitation/dissolution reactions coupled with solute transport are modelled as a cellular automaton in which solute molecules perform a random walk on a regular lattice and react according to a local probabilistic rule. Stationary solid particles dissolve with a certain probability and, provided solid is already present or the solution is saturated, solute particles have a probability to precipitate. In our simulation of the dissolution of a solid block inside uniformly flowing water we obtain solid precipitation downstream from the original solid edge, in contrast to the standard reaction-transport equations. The observed effect is the result of fluctuations in solute density and diminishes when we average over a larger ensemble. The additional precipitation of solid is accompanied by a substantial reduction in the relatively small solute concentration. The model is appropriate for the study of the rôle of intrinsic fluctuations in the presence of reaction thresholds and can be employed to investigate porosity changes associated with the carbonation of cement.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://arxiv.org/pdf/comp-gas/9502004v1.pdf
Language	English
Access Restriction	Open
Subject Keyword	Cellular automaton Downstream (software development) Flow Intrinsic dimension Large Simulation Solid Edge Stationary process solute
Content Type	Text
Resource Type	Article