Cellular Automata Modeling of Silica Aerogel Condensation Kinetics.

ABSTRACT: The formation of silica aerogels and the kinetics of condensation were investigated numerically. The influence of the reaction-limited to the diffusion-limited aggregation (RLA to DLA) transition on the reaction kinetics curves and the evolution of the aggregate size distribution during condensation were examined. The 2D cellular automaton was developed and applied to reflect the process of secondary particle aggregation. Several tendencies were observed due to the adjustment of the model parameters: the probability of condensation reaction and the particles' concentration. The final wet-gel structures' visualizations proves that the structure becomes more dense and compact due to entering the RLA regime. The simulation time (associated with the gelation time) decreased along with the incr

SUBMITTER: Borzecka NH 

PROVIDER: S-EPMC8167578 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature