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Karapiperis T. — Cellular Automaton Model of Precipitation/Dissolution Coupled with Solute Transport
Karapiperis T. — Cellular Automaton Model of Precipitation/Dissolution Coupled with Solute Transport

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Название: Cellular Automaton Model of Precipitation/Dissolution Coupled with Solute Transport

Автор: Karapiperis T.

Аннотация:

Journal of Statistical Physics, Vol. 81, Nos. 1/2. 1995. p. 165-180.
Precipitation/dissolution reactions coupled with solute transport are modeled 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 role of intrinsic fluctuations in the presence of reaction thresholds and can be employed to investigate porosity changes associated with the carbonation of cement.


Язык: en

Рубрика: Физика/

Тип: Статья

Статус предметного указателя: Неизвестно

ed2k: ed2k stats

Год издания: 1995

Количество страниц: 16

Добавлена в каталог: 03.11.2013

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